Journal articles

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[192].   A.K. Ipadeola, P.V. Mwonga, S. Ray, R.R. Maphanga, K.I. Ozoemena, “Palladium‐Stannic Oxide Interfacial Chemistry Promotes Hydrogen Oxidation Reactions in Alkaline Medium”, ChemElectroChem. 2020, 7 (22), 4562-4571;
[191].   A.K. Ipadeola, P.V. Mwonga, S. Ray, R.R. Maphanga, K.I. Ozoemena, “Bifunctional Behavior of Pd/Ni Nanocatalysts on MOF-Derived Carbons for Alkaline Water-Splitting”, Electroanalysis. 2020, 32, 3060-3074;

[190].   N.K.M. Zain, C. Karuppiah, I.I. Misnon, S. Das, K.I. Ozoemena, C.C. Yang, and R. Jose, “High Capacity and Rate Capability Binder-less Ternary Transition Metal-Organic Framework as Anode Material for Lithium-ion Battery”, Electroanalysis 2020, 32 (12), 3180-3188.

[189].   T.P. Mofokeng, Z.N. Tetana, K.I. Ozoemena, “Defective 3D nitrogen-doped carbon nanotube-carbon fibre networks for high-performance supercapacitor: Transformative role of nitrogen-doping from surface-confined to diffusive kinetics”, CARBON 2020, 169, 312-326;

[188].   P.V. Mwonga, A.K. Ipadeola, S.R. Naidoo,A. Quandt, and KI. Ozoemena, “Annealing Boosts the Supercapacitive Properties of Molybdenum Disulfide Powder”, Electroanalysis 2020 32 (12), 2642-2649 ;

[187].   F.P. Nkosi, N. Palaniyandy, K. Raju and K.I. Ozoemena, “Influence of microwave irradiation and combustion fuels on the rate capability and cycle performance of Li1.2Mn0.52Ni0.13Co0.13Al0.02O2 layered material”, Electroanalysis. 2020, 32 (12), 3159-3169;

[186].   B. Shaku, T.P. Mofokeng, T.H. Mongwe, N.J. Coville, K.I. Ozoemena and M.S. Maubane-Nkadibeng, “Physicochemical Properties of Nitrogen Doped Carbon Nano‐onions Grown by Flame Pyrolysis from Grapeseed Oil for use in Supercapacitors”, Electroanalysis. 2020, 32 (12), 2946-2957;

[185].   O.C. Ozoemena, N.S. Mathebula, T.J. Ehirim, T. Maphumulo, G.M. Valikpe, J.L. Shai, K.I. Ozoemena, “Onion-like carbon re-inforced electrospun polyacrylonitrile fibres for ultrasensitive electrochemical immunosensing of Vibrio cholerae toxin”, Electrochim Acta 2020, 5, 23-30;

[184].   T.P. Mofokeng, A.K. Ipadeola, Z.N. Tetana, K.I. Ozoemena, “Defect-Engineered Nanostructured Ni/MOF-Derived Carbons for an Efficient Aqueous Battery-Type Energy Storage Device”, ACS Omega 2020, 5 (32), 20461–20472;

[183].   A.K. Ipadeola, N. Mathebula, M. Pagliaro, H.A. Miller, F. Vizza, V. Davies, Q. Jia, F. Marken, K.I. Ozoemena, “Unmasking the Latent Passivating Roles of Ni(OH)2 on the Performance of Pd–Ni Electrocatalysts for Alkaline Ethanol Fuel Cells”,  ACS Appl. Energy Mater. 2020, 3 (9) 8786–8802;

[182].   A.B. Haruna and K.I. Ozoemena, “Manganese-based bifunctional electrocatalyst for zinc-air batteries”, Current Opinion in Electrochemistry 2020, 21, 219-224.

[181].   Y Ibrahim, A Kassab, K Eid, A M Abdullah, KI Ozoemena, A Elzatahry Unveiling Fabrication and Environmental Remediation of MXene-Based Nanoarchitectures in Toxic Metals Removal from Wastewater: Strategy and Mechanism, Nanomaterials 2020, 10, 885.

[180]. M.E. Lyons and K.I. Ozoemena, “Energy Storage: An old dog with new tricks” (Editorial Overview), Current Opinion in Electrochemistry 2020. 21, A1-A5.

[179].  O.C. Ozoemena, L.J. Shai, T. Maphumulo and K.I. Ozoemena, “Electrospun Carbon Nanofibres as Electrochemical Immunosensing Platform for Vibrio Cholerae Toxin: Ageing Effect of Redox Probe”, ACS Omega 2020, 5, 11, 5762-5771.

[178].  L. Gaolatlhe, R. Barik, S.C. Ray, K.I. Ozoemena, “Voltammetric responses of porous Co3O4 spinels supported on MOF-derived carbons: Effects of porous volume on dopamine diffusion processes”, Journal of Electroanalytical Chemistry 2020, 872, 113863.

[177].   AK Ipadeola, KI Ozoemena, Alkaline water-splitting reactions over Pd/Co-MOF-derived carbon obtained via microwave-assisted synthesis, RSC Advances 2020,10, 17359-17368.

[176].   U. Nwankwo, S. Ngqoloda, A.C. Nkele, C.J. Arendse, K.I. Ozoemena, A.B.C Ekwealor, R. Jose, M. Maaza, F.I. Ezema “Effects of alkali and transition metal-doped TiO2 hole blocking layers on the perovskite solar cells obtained by a two-step sequential deposition method in air and under vacuum”, RSC Advances 2020, 10, 13139-13148;

[175].   K. Raju, H. Han, D.B. Velusamy, Q. Jiang, H. Yang, F.P. Nkosi, N. Palaniyandy, K. Makgopa, Z. Bo, K.I. Ozoemena, “Rational Design of 2D Manganese Phosphate Hydrate Nanosheets as Pseudocapacitive Electrodes”, ACS Energy Letters 2020, 5, 23-30;


[174].   I. Habib, P. Ferrer, S.C. Ray and K.I. Ozoemena, “Interrogating the impact of onion-like carbons on the supercapacitive properties of MXene (Ti2CTx)”, Journal of Applied Physics, 2019, 126, 134301;

[173].  A.B. Haruna and K.I. Ozoemena, “Effects of microwave irradiation on the electrochemical performance of manganese-based cathode materials for lithium-ion batteries”, Current Opinion in Electrochemistry 2019 18, 16 - 23: doi: 10.1016/j.coelec.2019.08.005

[172].  F.P. Nkosi, N. Palaniyandy, K. Raju, C. Billing and K.I. Ozoemena, “Physico-chemistry of energy-dense Li1.2Mn0.52Co0.13Ni0.13Al0.02O2 cathode material for lithium-ion batteries obtained from urea and ethylene glycol fuels”, Material Research Express 2019, 6, 115501.

[171].   N. Palaniyandy, M. Kebede, K. Raju, K.I. Ozoemena, L. le Roux, M.K. Mathe and R. Jayaprakasam, “α-MnO2 Nanorod / Onion-like carbon composite cathode material for aqueous zinc-ion battery”, Materials Chemistry and Physics 2019, 230, 258-266.

[170].   O.C. Ozoemena, L.J. Shai, T. Maphumulo and K.I. Ozoemena, “Electrochemical Sensing of Dopamine Using Onion-like Carbons and Their Carbon Nanofiber Composites”, Electrocatalysis 2019,10, 381–391.

[169].   A.K. Ipadeola, R. Barik, S.C. Ray and K.I. Ozoemena, “Bimetallic Pd/SnO2 Nanoparticles on Metal Organic Framework (MOF)-Derived Carbon as Electrocatalysts for Ethanol Oxidation”, Electrocatalysis 2019, 10, 366–380. 

[168].   N. Palaniyandy, M. Kebede, K.I. Ozoemena and M.K. Mathe, “Rapidly Microwave-Synthesized SnO2 Nanorods Anchored on Onion-Like Carbons (OLCs) as Anode Material for Lithium-Ion Batteries”, Electrocatalysis 2019, 10, 314–322.

[167].   S.A. Melchior, N. Palaniyandy, I. Sigalas, S.E. Iyuke and K.I. Ozoemena, “Probing the electrochemistry of MXene (Ti2CTx)/electrolytic manganese dioxide (EMD) composites as anode materials for lithium-ion batteries”, Electrochim. Acta, 2019, 297, 961-973.

[166].   N. Palaniyandy, F.P. Nkosi, K. Raju and K.I. Ozoemena, “Conversion of electrolytic MnO2 to Mn3O4 nanowires for high performance anode materials for lithium-ion batteries”, J. Electroanal. Chem., 2019, 833, 79-92.


[165].   P.V. Mwonga, R. Barik, S.R. Naidoo, A. Quandt and K.I. Ozoemena, “Interrogating the effects of ion-implantation-induced defects on the energy storage properties of bulk molybdenum disulphide”, Phys. Chem. Chem. Phys. 2018, 20, 28232-28240.

[164].   K.I. Ozoemena, S. Musa, R. Modise, A.K. Ipadeola, L. Gaolatlhe, S. Peteni and G. Kabongo, “Fuel cell-based breath-alcohol sensors: Innovation-hungry old electrochemistry”, Current Opinion in Electrochemistry, 2018, 10, 82–87. 10.1016/ j.coelec.2018.05.007 

[163].   N. Palaniyandy, F.P. Nkosi, K. Raju and K.I. Ozoemena, “Fluorinated Mn3O4 nanospheres for lithium-ion batteries: Low-cost synthesis with enhanced capacity, cyclability and charge-transport”, Mater. Chem. Phys., 2018, 209, 65-75.

[162].   S.A. Melchior, K. Raju, I.S. Ike, R.M. Erasmus, G. Kabongo, I. Sigalas, S.E. Iyuke and K.I. Ozoemena, “High-Voltage Symmetric Supercapacitor Based on 2D Titanium Carbide (MXene, Ti2CTx)/Carbon Nanosphere Composites in a Neutral Aqueous Electrolyte”, J. Electrochem. Soc., 2018, 165, A501-A511.

[161].   S. Choudhury, P. Srimuk, K. Raju, A. Tolosa, S. Fleischmann, M. Zeiger, K.I. Ozoemena, L. Borchardt and V. Presser, “Carbon onion/sulfur hybrid cathodes via inverse vulcanization for lithium–sulfur batteries”, Sustainable Energy Fuels, 2018, 2, 133-146 (Hot article).

[160].   G.L. Kabongo, G. Nyongombe, K. Ozoemena, S. Dhlamini, Microwave Irradiation Induces Oxygen Vacancy in Metal Oxides based Materials and Devices: A Review, J. Nanosci. Curr. Res., 2018, 3, 2572, 2572-0813.1000125.


[159].   M.A. Kebede, S.N. Yannopoulos, L. Sygellou and K.I. Ozoemena, “High-Voltage LiNi0.5Mn1.5O4-δ Spinel Material Synthesized by Microwave-Assisted Thermo-Polymerization: Some Insights into the Microwave-Enhancing Physico-Chemistry”, J. Electrochem Soc., 2017, 164 (13), A3259-A3265.
[158].   F.P. Nkosi, K. Raju, N. Palaniyandy, M.V. Reddy, C. Billing and K.I. Ozoemena, “Insights into the Synergistic Roles of Microwave and Fluorination Treatments towards Enhancing the Cycling Stability of P2-Type Na0.67[Mg0.28Mn0.72]O2 Cathode Material for Sodium-Ion Batteries”, J. Electrochem Soc., 2017, 164 (13), A3362-A3370.
[157].   C.A. Rossouw, K. Raju, H. Zheng and K.I. Ozoemena, “Capacity and charge-transport enhancement of LFP/RGO by doping with α-MnO2 in a microwave-assisted synthesis”, Applied Physics A, 2017, 123 (12), 769.

[156].   H. Zheng, M. Modibedi, M.K. Mathe and K.I. Ozoemena, “The thermal effect on the catalytic activity of MnO 2 (α, β, and γ) for oxygen reduction reaction”, Materials Today: Proceedings, 2017, 4 (11), 11624-11629.

[155].   P. Nithyadharseni, K.P. Abhilash, S. Petnikota, M.R. Anilkumar, R. Jose, K.I. Ozoemena, R. Vijayaraghavan, P. Kulkarni, G. Balakrishna, B.V.R. Chowdari, S. Adams and M.V. Reddy, “Synthesis and Lithium Storage Properties of Zn, Co and Mg doped SnO2 Nano Materials”, Electrochim. Acta 2017, 247, 358-370.

[154].   K.I.  Ozoemena and S. Carrara, “Biomedical electrochemical sensors for resource-limited countries”, Current Opinion in Electrochemistry, 2017, 3, 51-56.

[153].   C.A. Rossouw, K. Raju, H. Zheng and K.I. Ozoemena, “Manganese-Enriched Electrochemistry of LiFePO4/RGO Nanohybrid for Aqueous energy storage”, Materials Research Express 2017, 4 (7), 075504.

[152].   M. Kebede and K.I. Ozoemena, “Molten salt directed synthesis method for LiMn2O4 nanorods as cathode materials for Lithium-ion Battery with superior cyclability”, Materials Research Express 2017, 4 (2), 025030.

[151].   K. Makgopa, K. Raju, P.M. Ejikeme and K.I. Ozoemena, “High-performance Mn3O4/onion-like carbon (OLC) nanohybrid pseudocapacitor: Unravelling the intrinsic properties of OLC against other carbon supports, Carbon, 2017, 117, 20-32.

[150].   A.C. Nwanya, C. Awada, D. Obi, K. Raju, K.I. Ozoemena, R.U. Osuji, A. Ruediger, M. Maaza, F. Rosei and F.I. Ezema, “Nanoporous copper-cobalt mixed oxide nanorod bundles as high performance pseudocapacitive electrodes”, J. Electroanal. Chem., 2017, 787, 24–35.


[149].   N. Kunjuzwa, M. A. Kebede, K.I. Ozoemena and M. K. Mathe, “Stable nickel-substituted (LiMn1.9Ni0.1O4) cathode material for lithium-ion battery obtained by low temperature aqueous reduction technique”, RSC Adv., 2016, 6, 111882–111888.

[148].   P.M. Ejikeme, K. Makgopa, K. Raju, K.I. Ozoemena*, “Promotional Effects of Nanodiamond-Derived Onion-Like Carbons on the Electrocatalytic Properties of Pd-MnO2 for the Oxidation of Glycerol in Alkaline Medium”, ChemElectroChem, 2016, 3, 2243-2251 (Invited article)

[147].   K.I. Ozoemena, “Nanostructured platinum-free electrocatalysts in alkaline direct alcohol fuel cells: Catalyst design, principles and applications”, RSC Adv., 2016, 6, 89523 - 89550 (Invited Review).

[146].   P. Nithyadharseni, M.V. Reddy, K.I. Ozoemena, F.I. Ezema, R.G. Balakrishna, B. V. R. Chowdari, “Electrochemical Performance of BaSnO3 Anode Material for Lithium-Ion Battery Prepared by Molten Salt Method”, J. Electrochem. Soc. 2016, 163, A540-A545.

[145].   K. Makgopa, P.M. Ejikeme, K.I. Ozoemena*, “Graphene oxide-modified nickel (II) tetra-aminophthalocyanine nanocomposites for high-power symmetric pseudocapacitor”, Electrochim. Acta 2016, 212, 876-882.

[144].   T.N.Y. Khawula, K.Raju, P.J. Franklyn, I. Sigalas, K.I. Ozoemena*, “The Effects of Morphology Re-Arrangements on the Pseudocapacitive Properties of Mesoporous Molybdenum Disulfide (MoS2) Nanoflakes, J. Electrochem. Soc. 2016, 163, A1927-A1935.

[143].   T.N.Y. Khawula, K.Raju, P.J. Franklyn, I. Sigalas, K.I. Ozoemena*, “Symmetric pseudocapacitors based on molybdenum disulfide (MoS2)-modified carbon nanospheres: correlating physicochemistry and synergistic interaction on energy storage”, J. Mater. Chem. A., 2016, 4, 6411-6425.

[142].   K. Raju, F.P. Nkosi, E. Viswanathan, M.K. Mathe, K. Damodaran, K.I. Ozoemena*, “Microwave-enhanced electrochemical cycling performance of the LiNi0.2Mn1.8O4 spinel cathode material at elevated temperature”, Phys. Chem. Chem. Phys. 2016, 18, 13074-13083.

[141].   A.C. Nwanya, D. Obi, K.I. Ozoemena, R.U. Osuji, C. Awada, A. Ruediger, M. Maaza, F. Rosei, F.I. Ezema, “Facile Synthesis of Nanosheet-like CuO Film and its Potential Application as a High-Performance Pseudocapacitor Electrode”, Electrochim. Acta, 2016, 198, 220-230.


[140].   K. Raju and K.I. Ozoemena*, “Hierarchical One-Dimensional Ammonium Nickel Phosphate Microrods for High-Performance Pseudocapacitors”, Sci. Rep., 2015, 5, 17629 (p1 – 13).

[139].   R.G. Motsoeneng, R.M. Modibedi, M.K. Mathe, L.E. Khotseng, K.I. Ozoemena, “The synthesis of PdPt/carbon paper via surface limited redox replacement reactions for oxygen reduction reaction”, Int. J. Hydrogen Energy, 2015, 40, 16734 – 16744.

[138].   S. Pillay, J. Pillay, P. M. Ejikeme, K. Makgopa, and K. I. Ozoemena, “Nanostructured Cobalt(II) Tetracarboxyphthalocyanine Complex Supported Within the MWCNT Frameworks: Electron Transport and Charge Storage Capabilities”, Electroanalysis, 2015, 27, 1707–1718.

[137].   M.B. Rohwer, Remegia M. Modibedi and K.I. Ozoemena, “Microwave Activation of Palladium Nanoparticles for Enhanced Ethanol Electrocatalytic Oxidation Reaction in Alkaline Medium”, Electroanalysis, 2015, 27, 957–963.

[136].   P. Nithyadharseni, M.V. Reddy, K.I. Ozoemena, R.G. Balakrishna, B.V.R. Chowdari, “Low temperature molten salt synthesis of Y2Sn2O7 anode material for lithium ion batteries”, Electrochim. Acta, 2015, 182, 1060–1069.

[135].   R.M. Modibedi, T. Mehlo, K.I. Ozoemena, M.K. Mathe, “Preparation, characterisation and application of Pd/C nanocatalyst in passive alkaline direct ethanol fuel cells (ADEFC)”, Int. J. Hydrogen Energy, 2015, 40, 15605–15612.

[134].   M.A. Kebede, M.J. Phasha, N. Kunjuzwa, M.K. Mathe, K.I. Ozoemena, Solution-combustion synthesized aluminium-doped spinel (LiAl x Mn2−x O4) as a high-performance lithium-ion battery cathode material, Applied Physics A, 2015, 121, 51-57. doi:10.1007/s00339-015-9311-0

[133].   F.P. Nkosi, C.J. Jafta, M. Kebede, L. le Roux, M.K. Mathe, K.I. Ozoemena*, “Microwave-assisted optimization of the manganese redox states for enhanced capacity and capacity retention of LiAlxMn2-xO4 (x = 0 and 0.3) spinel materials”, RSC Adv., 2015, 5, 32256–32262.

[132].   TS Tshephe, PA Olubambi, I Sigalas, KI Ozoemena, J Garrett, “Characterization of TiO2-MnO2 composite electrodes synthesized using spark plasma sintering technique”, Powder Technology, 2015, 277, 303-309.

[131].   A.S. Adekunle, B.O. Agboola, K.I. Ozoemena, E.E. Ebenso, J.A.O. Oyekunle, “Comparative Supercapacitive Properties of Asymmetry Two Electrode Coin Type Supercapacitor Cells made from MWCNTS/Cobalt Oxide and MWCNTs/Iron Oxide Nanocomposite”, Int. J. Electrochem. Sci. 2015, 10, 3414-3430.

[130].   O.O. Fashedemi, H.A. Miller, A. Marchionni, F. Vizza, K.I. Ozoemena*, “Electro-oxidation of ethylene glycol and glycerol at palladium-decorated FeCo@Fe core–shell nanocatalysts for alkaline direct alcohol fuel cells: functionalized MWCNT supports and impact on product selectivity”, J. Mater. Chem. A, 2015, 3, 7145–7156.

[129].   O.O. Fashedemi, K.I. Ozoemena*, “Oxygen reduction reaction at MWCNT-modified nanoscale iron (II) tetrasulfophthalocyanine: remarkable performance over platinum and tolerance toward methanol in alkaline medium”, RSC Adv., 2015, 5, 22869–22878.

[128].   C.J. Jafta, K. Raju, M.K. Mathe, N Manyala, K.I. Ozoemena, “Microwave Irradiation Controls the Manganese Oxidation States of Nanostructured (Li[Li0.2Mn0.52Ni0.13Co0.13Al0.02]O2) Layered Cathode Materials for High-Performance Lithium Ion Batteries”, J. Electrochem. Soc., 2015, 162, A768-A773.

[127].   K Makgopa, PM Ejikeme, CJ Jafta, K Raju, M Zeiger, V Presser, K. I. Ozoemena, “A high-rate aqueous symmetric pseudocapacitor based on highly graphitized onion-like carbon/birnessite-type manganese oxide nanohybrids”, J. Mater. Chem. A, 2015, 3, 3480–3490.


[126].   N.E. Mphahlele, L. Le Roux, C.J. Jafta, L. Cele, M.K. Mathe, T. Nyokong, and N. Kobayashi, K.I. Ozoemena, “Carbon Nanotube-Enhanced Photo-electrochemical Properties of Metallo-octacarboxyphthalocyanines”, J. Mater. Sci. 2014, 49, 340-346. doi.10.1007/s10853-013-7710-1

[125].   A.T. Chidembo, S.H. Aboutalebi, K. Konstantinov, C.J. Jafta, H.K. Liu, K.I. Ozoemena, “In situ engineering of urchin-like reduced graphene oxide–Mn2O3–Mn3O4 nanostructures for supercapacitors>”, RSC Advances 2014, 4, 886-892.

[124].   A. Bello, M. Fabiane, D. Dodoo-Arhin, K.I. Ozoemena, N. Manyala, “Silver Nanoparticles Decorated on a Three-Dimensional Graphene Scaffold for Electrochemical Applications”, J. Phys. Chem. Solids 2014, 75, 109 – 114.

[123].   M.A. Kebede, M.J. Phasha, N.Kunjuzwa, L.J. le Roux, D. Mkhonto, K.I. Ozoemena, M.K. Mathe, “Structural and electrochemical properties of aluminium doped LiMn2O4 cathode materials for Li battery: Experimental and ab initio calculations”, Sustainable Energy Technologies and Assessments 2014, 5, 44-49. (Hot article).

[122].   K. Lawrence, C.L. Baker, T.D. James, S.D. Bull, R. Lawrence, J.M. Mitchels, M. Opallo, O.A. Arotiba, K.I. Ozoemena, F. Marken, “Functionalised Carbon Nanoparticles, Blacks and Soots as Electron Transfer Building Blocks and Conduits”, Chemistry - An Asian Journal 2014, 9, 1226 -1241.

[121].   M.A. Kebede, N. Kunjuzwa, C.J. Jafta, M.K. Mathe, K.I. Ozoemena*, “Solution-combustion synthesized nickel-substituted spinel cathode materials (LiNixMn2-xO4; 0≤x≤0.2) for lithium ion battery: enhancing energy storage, capacity retention, and lithium ion transport”, Electrochim. Acta 2014, 128, 172 - 177.

[120].   N. Ross, E.I. Iwuoha, C.O. Ikpo, P.G.L. Baker, N. Njomo, S.N. Mailu, M. Masikini, T. Waryo, K.I. Ozoemena, A. Williams, “Amplification of the current discharge density of lithium-ion batteries with spinel phase LiPtAu0.02Mn1.98O4 nano-materials”, Electrochim. Acta 2014, 128, 178-183.

[119].   M.V. Reddy, T.W. Jie, C.J. Jafta, K.I. Ozoemena, M.K. Mathe, A. S. Nair, S.S. Peng, M.S. Idris, G. Balakrishna, F.I. Ezema, B.V.R. Chowdari, “Studies on Bare and Mg-doped LiCoO2 as a cathode material for Lithium ion Batteries”, Electrochim. Acta 2014, 128, 192-197.

[118].   M.V. Reddy, R. Jose, A. Le Viet, K.I. Ozoemena, B.V.R. Chowdari, S. Ramakrishna, “Studies on the lithium ion diffusuion coefficients of electrospun Nb2O5 nanoastructures  using galvanoostatic intermittent titration and electrochemical impedance spectroscopy”, Electrochim. Acta 2014, 128, 198-202.

[117].   A.C. Nwanya, C.J. Jafta, P.M. Ejikeme, P.E. Ugwuoke, M.V. Reddy, R.U. Osuji, K.I. Ozoemena, F.N. Ezema, “Electrochromic and electrochemical capacitive properties of tungsten oxide and its polyaniline nanocomposite films obtained by chemical bath deposition method”, Electrochim. Acta 2014, 128, 218-225.

[116].   N. Njomo, T. Waryo, M. Masikini, C.O. Ikpo, S. Mailu, O. Tovide, N. Ross, A. Williams, P.G.L. Baker, K.I. Ozoemena, E.I. Iwuoha, “Graphenated Ta(IV)O and poly(4-styrene sulphonic acid) doped polyaniline nanocomposite as cathode material in an electrochemical capacitor”, Electrochim. Acta 2014, 128, 226-237.

[115].   O.O. Fashedemi and K.I. Ozoemena*, “Comparative electrocatalytic oxidation of ethanol, ethylene glycol and glycerol in alkaline medium at Pd-decorated FeCo@Fe/C core-shell nanocatalysts”, Electrochim. Acta 2014, 128, 279-286.

[114].   R.M. Modibedi, M.K. Mathe, R.G. Motsoeneng, L.E. Khotseng, K.I. Ozoemena, E.K. Louw, “Electro-deposition of Pd on Carbon paper and Ni foam via surface limited redox-replacement reaction for oxygen reduction reaction”, Electrochim. Acta 2014, 128, 406-411.


[113].   O.O. Fashedemi, B. Jules, K.I. Ozoemena*, “Synthesis of Pd-coated FeCo@Fe/C core-shell nanoparticles: A microwave-induced ‘top-down’ nanostructuring and decoration”, Chem. Commun., 2013,49, 2034-2036.

[112].   O.O. Fashedemi, K.I. Ozoemena*, “Enhanced methanol oxidation and oxygen reduction reactions on palladium-decorated FeCo@Fe/C core-shell nanocatalysts in alkaline medium”, Phys. Chem. Chem. Phys. 2013, 15, 20982-20991.

[111].   C.J. Jafta , M. K. Mathe , N. Manyala ,  W.D. Roos, K.I. Ozoemena*, “Microwave-Assisted Synthesis of High-Voltage Nanostructured LiMn1.5Ni0.5O4 spinel: Tuning the Mn3+ Content and Electrochemical Performance”, ACS Appl. Mater. Interfaces 2013, 5, 7592−7598.

[110].   J. N. Lekitima, K.I. Ozoemena*, C.J. Jafta, N. Kobayashi, Y. Song, D. Tong, S.W. Chen, M. Oyama, “High-performance aqueous asymmetric electrochemical capacitor based on graphene oxide/cobalt(II)-tetrapyrazinoporphyrazine hybrids”, J. Mater. Chem. A, 2013, 1, 2821 – 2826.

[109].   T. Ramulifho, K.I. Ozoemena*, R.M. Modibedi, C.J. Jafta, M.K. Mathe, “Electrocatalytic Oxidation of Ethylene Glycol at Palladium-Bimetallic Nanocatalysts (PdSn and PdNi) Supported on Sulfonate functionalised Multi-walled Carbon Nanotubes”, J. Electroanal. Chem. 2013, 692, 26–30.

[108].   C.O. Ikpo, C.J. Jafta, K.I. Ozoemena, N. West, N. Njomo, N. Jahed, P.G.L. Baker and E.I. Iwuoha, “Novel Iron-Cobalt Derivatised Lithium Iron Phosphate Nanocomposite for Lithium Ion Battery Cathode”, Int. J. Electrochem. Sci., 2013, 8, 753 – 772.

[107].   A.S. Adekunle, K.I. Ozoemena*, B.O. Agboola, “MWCNTs/Metal (Ni, Co, Fe) oxide nanocomposite as potential material for supercapacitors application in acidic and neutral media”, J. Solid State Electrochem. 2013, 17, 1311 – 1320. doi/10.1007/s10008-012-1978-y

[106].   N. West, K.I. Ozoemena, C.O. Ikpo, P.G.L. Baker, E.I. Iwuoha, “Transition metal alloy-modulated lithium manganese oxide nanosystem for energy storage in lithium-ion battery cathodes”, Electrochim. Acta 2013,101, 86–92.

[105].   A. Bello, K. Makgopa, M. Fabiane, D. Dodoo-Ahrin, K.I. Ozoemena, N. Manyala, “Chemical adsorption of NiO nanostructures on nickel foam-graphene for supercapacitor applications”, J. Mater. Sci. 2013, 48, 6707–6712. doi/10.1007/s10853-013-7471-x

[104].   A. Bello, O.O. Fashedemi, M. Fabiane, K.I. Ozoemena, J.N. Lekitima,  Ozoemena, N. Manyala, “Microwave assisted synthesis of MnO2 on nickel foam-graphene for electrochemical capacitor”, Electrochim. Acta 2013, 114, 48-53 (Hot article).

[103].   A. Bello, O.O. Fashedemi, J.N. Lekitima, M. Fabiane, D. Dodoo-Arhin,K.I. Ozoemena, Y. Gogotsi, A.T. Charlie Johnson, and N. Manyala, “High-performance symmetric electrochemical capacitor based on graphene foam and nanostructured manganese oxide”, AIP Advances 2013, 3, 082118-1 -082118-9.

[102].   M.V. Reddy, L.Y.T. Andreea, A.Y. Ling, J.N.C. Hwee, C.A. Lin, S. Admas, K.P. Loh, M.K. Mathe, K.I. Ozoemena, B.V.R. Chowdari, Effect of preparation temperature and cycling voltage range on molten salt method prepared SnO2, Electrochim. Acta 106 (2013) 143– 148.

[101].   C.O. Ikpo, N. Njomo, K.I. Ozoemena, T. Waryo, R.A. Olowu, M. Masikini, A.A. Baleg, N. Jahed, P.G.L. Baker, E.I. Iwuoha, “Electrokinetic and Impedimetric Dynamics of FeCo-Nanoparticles on Glassy Carbon Electrode”, Nano Hybrids. 2013, 3, 1-23.

[100].   C.J. Jafta, F. Nkosi, L. le Roux, M.K. Mathe, M. Kebede, K. Makgopa, Y. Song, D. Tong, M. Oyama, N. Manyala, S.W. Chen, K.I. Ozoemena, “Manganese oxide/graphene oxide composites for high-energy aqueous asymmetric electrochemical capacitors”, Electrochim. Acta 2013, 110, 228 – 233.

[99].     R.M. Modibedi, E. Louw, M.K. Mathe, K.I. Ozoemena, The Electrochemical Atomic Layer Deposition of Pt and Pd Nanoparticles on Ni Foam for the Electro-Oxidation of Alcohols, ECS Trans. 2013, 50 (21), 9-18.

[98].     C.J. Jafta, F. Nkosi, L. le Roux, M. Kebede, K. Makgopa, M.K. Mathe, N. Manyala, M. Oyama, and K.I. Ozoemena*, “Tuning Electrolytic Manganese Dioxide for a High-Voltage Aqueous Asymmetric Electrochemical Capacitor”, ECS Trans. 2013, 50(43), 93-101.

[97].     M.A. Kebede, N. Kunjuzwa, K.I. Ozoemena, M.K. Mathe, “Synthesis and Electrochemical Properties of Ni Doped Spinel LiNixMn2-xO4 (0≤ x≤ 0.5) Cathode Materials for Li-Ion Battery”, ECS Trans. 2013, 50(40), 1-14.

[96].     J. Lekitima, K.I. Ozoemena*, N. Kobayashi, “Electrochemical Capacitors Based on Nitrogen-Enriched Cobalt (II) Phthalocyanine/Multi-walled Carbon Nanotube Nanocomposites”, ECS Trans. 2013, 50(43), 125-132.


[95].     T. Ramulifho, K.I. Ozoemena*, R.M. Modibedi, C.J. Jafta, M.K. Mathe, “Fast microwave-assisted solvothermal synthesis of metal nanoparticles (Pd, Ni, Sn) supported on sulfonated MWCNTs: Pd-based bimetallic catalysts for ethanol oxidation in alkaline medium”, Electrochim. Acta 2012, 59, 310-320.

[94]     C.J. Jafta,  K.I. Ozoemena*, M.K. Mathe, W. Roos, Synthesis, Characterisation and Electrochemical Intercalation Kinetics of Nanostructured Aluminium-Doped Li[Li0.2Mn0.54Ni0.13Co0.13]O2 Cathode Material for Lithium Ion Battery, Electrochim. Acta 2012, 85,
411– 422.

[93].     A.S. Adekunle, A.M. Farah, J. Pillay, K.I. Ozoemena, B.B. Mamba, B.O. Agboola, “Electrocatalytic properties of prussian blue nanoparticles supported on poly(m-aminobenzenesulphonic acid)-functionalised single-walled carbon nanotubes towards the detection of dopamine”, Colloids and Surfaces B: Biointerfaces 95 (2012) 186– 194.

[92].     K.I. Ozoemena, J. Oni, “Phthalocyanines in batteries and supercapacitors”, J. Porphyrins Phthalocyanines 16 (2012) 713-740.

[91].     J. Masa, K.I. Ozoemena, W. Schuhmann, J.H. Zagal, “Oxygen reduction reaction using N4-metallomacrocyclic catalysts: fundamentals on rational catalyst design”, J. Porphyrins Phthalocyanines 16 (2012) 761-784.


[90].     O.O. Fashedemi and K.I. Ozoemena*, "A facile approach to the synthesis of hydrophobic irontetrasulfophthalocyanine (FeTSPc) nano-aggregates on multi-walled carbon nanotubes: A potential electrocatalyst for the detection of dopamine" Sens. Actuators: B. Chem. 2011, 160, 7-14.

[89].     N.W. Maxakato, S.A. Mamuru, K.I. Ozoemena*, “Efficient Oxygen Reduction Reaction Using Ruthenium Tetrakis (diaquaplatinum) octacarboxyphthalocyanine Catalyst Supported on MWCNT Platform”, Electroanalysis 2011, 23, 325 – 329.

[88].     A.S. Adekunle and K.I. Ozoemena*, "Electrosynthesised Metal (Ni, Fe, Co) Oxide Films on Single‑Walled Carbon Nanotube Platforms and their Supercapacitance in Acidic and Neutral pH Media" Electroanalysis 2011, 23, 971 – 979.

[87].     I. A. Akinbulu, K.I. Ozoemena, T. Nyokong, “Formation, surface characterization, and electrocatalytic application of self-assembled monolayer films of tetra-substituted manganese, iron, and cobalt benzylthio phthalocyanine complexes”, J Solid State Electrochem., 2011, 15, 2239–2251.

[86].     A.S. Adekunle, B.B. Mamba, B.O. Agboola, K.I. Ozoemena, “Nitrite Electrochemical Sensor Based on Prussian Blue /Single-Walled Carbon Nanotubes Modified Pyrolytic Graphite Electrode”, Int. J. Electrochem. Sci., 2011, 6, 4388 – 4403.

[85].     A.S. Adekunle, K.I. Ozoemena, B.B. Mamba, B.O. Agboola, O.S. Oluwatobi, “Supercapacitive Properties of Symmetry and the Asymmetry Two Electrode Coin Type Supercapacitor Cells Made from MWCNTS/Nickel Oxide Nanocomposite”, Int. J. Electrochem. Sci., 2011, 6, 4760 – 4774.


[84].     K. I. Ozoemena*, N.S. Mathebula, J. Pillay, G. Toschi and J.A. Verschoor, “Electron transfer dynamics across self-assembled N-(2-mercaptoethyl) octadecanamide / mycolic acid layers: impedimetric insights into the structural integrity and interaction with anti-mycolic acid antibodies” Phys. Chem. Chem. Phys. 201012, 345 – 357.

[83].     D. Nkosi, J. Pillay, K. I. Ozoemena*, K. Nouneh and M. Oyama, “Heterogeneous electron transfer kinetics and electrocatalytic behaviour of mixed self-assembled ferrocenes and SWCNTs layers, Phys. Chem. Chem. Phys. 2010, 12, 604 – 613.

[82].     A.T. Chidembo, K.I. Ozoemena*, B. O. Agboola, V. Gupta, G.G. Wildgoose and R.G. Compton “Nickel (II)tetraaminophthalocyanine modified MWCNTs as potential nanocomposite materials for the development of supercapacitors” Energy Environ. Sci. 2010, 3, 228–236.

[81].     B.O. Agboola and K.I. Ozoemena*, “Synergistic enhancement of supercapacitance upon integration of nickel (II) octa [(3,5-biscarboxylate)-phenoxy] phthalocyanine with SWCNT-phenylamine”, J. Power sources 2010, 195, 3841-3848.

[80].     N.W. Maxakato, K.I. Ozoemena*, C.J. Arendse” Dynamics of electrocatalytic oxidation of ethylene glycol, methanol and formic acid at MWCNT platform electrochemically modified with Pt/Ru nanoparticles”, Electroanalysis 2010, 22, 519-529.

[79].     B.O. Agboola, K.I. Ozoemena*, T. Nyokong, T. Fukuda, N. Kobayashi, “Tuning the physico-electrochemical properties of novel cobalt (II) octa[(3,5-biscarboxylate)-phenoxy] phthalocyanine complex using phenylamine-functionalised SWCNTs”, Carbon 2010, 48, 763-773.

[78].     Adekunle, J. Pillay and K.I. Ozoemena* “Probing the electrochemical behaviour of SWCNT-Cobalt nanoparticles and their electrocatalytic activities towards the detection of nitrite at acidic and physiological pH conditions”, Electrochim. Acta  2010, 55, 4319–4327.

[77].     S.A. Mamuru and K.I. Ozoemena* “Heterogeneous Electron Transfer and Oxygen Reduction Reaction at Nano-structured Iron (II) Phthalocyanine and its MWCNTs Nanocomposites”, Electroanalysis 2010, 22, 985-994.

[76].     J. Pillay, K.I. Ozoemena*, R.T. Tshikudo and R. Moutloali, “Monolayer-protected clusters of gold nanoparticles: Impacts of stabilizing ligands on the heterogeneous electron transfer dynamics and voltammetric detection, Langmuir 2010, 26, 9061–9068.

[75].     M.P.  Siswana, K.I. Ozoemena*, D.A. Geraldo and T. Nyokong “Nanostructured nickel (II) phthalocyanine–MWCNT as viable nanocomposite platform for electrocatalytic detection of asulam pesticide at neutral pH conditions” J. Solid State Electrochem. 2010, 14, 1351–1358.

[74].     A.S. Adekunle and K.I. Ozoemena*, “Electron Transport and Electrocatalytic Properties of MWCNT/Nickel nanocomposites: Hydrazine and Diethylaminoethanethiol as Analytical Probes”, J. Electroanal. Chem. 2010, 645, 41–49.

[73].     A.S. Adekunle, B.O. Agboola, J. Pillay, K.I. Ozoemena*,  “Electrocatalytic detection of dopamine at SWCNT-Fe2O3 nanoparticle platform”, Sens. Actuators B. 2010, 148, 93–102.

[72].     S.A. Mamuru, K.I. Ozoemena*, T. Fukuda, N. Kobayashi and T. Nyokong,Studies on the heterogeneous electron transport and oxygen reduction reaction at metal (Co, Fe) octabutylsulphonylphthalocyanines supported on multi-walled carbon nanotube modified graphite electrode”, Electrochim. Acta 2010, 55, 6367–6375.

[71].     B.O. Agboola, J. Pillay, K. Makgopa and K.I. Ozoemena*, “Electrochemical characterisation of mixed self-assembled films of water-soluble single-walled carbon nanotube-poly (m-aminobenzene sulfonic acid) and iron(II)tetrasulfophthalocyanine”,  J. Electrochem. Soc. 2010, 157, F159-F166.

[70].     S.A. Mamuru and K.I. Ozoemena*, “Iron (II) tetrakis (diaquaplatinum) octacarboxy-phthalocyanine supported on multi-walled carbon nanotubes as effective electrocatalyst for oxygen reduction reaction in alkaline medium”, Electrochem. Commun., 2010, 12, 1539-1542.

[69].     A.S. Adekunle and K.I. Ozoemena*, “Electrocatalytic Oxidation of Diethylaminoethanethiol and Hydrazine at Single-walled Carbon Nanotubes Modified with Prussian Blue Nanoparticles”, Electroanalysis 2010, 22, 2519–2528.

[68].     A.T. Chidembo and K.I. Ozoemena*, “Electrochemical Capacitive Behaviour of Multi-walled Carbon Nanotubes Modified with Electropolymeric Films of Nickel Tetraaminophthalocyanine”, Electroanalysis 2010, 22, 2529 – 2535.

[67].     A.S. Adekunle and K.I. Ozoemena*, “Voltammetric and Impedimetric Properties of Nano-scaled g-Fe2O3 Catalysts Supported on Multi-Walled Carbon Nanotubes: Catalytic Detection of Dopamine”, Int. J. Electrochem. Sci. 2010, 5, 1726 – 1742.

[66].     A.S. Adekunle and K.I. Ozoemena*, “Comparative Surface Electrochemistry of Co and Co3O4 Nanoparticles: Nitrite as an Analytical Probe”, Int. J. Electrochem. Sci. 2010, 5, 1972 – 1983.

[65].     S.A. Mamuru, K.I. Ozoemena*, T. Fukuda and N. Kobayashi, “Iron (II) tetrakis (diaquaplatinum) octacarboxyphthalocyanine supported on multi-walled carbon nanotubes platform: An efficient functional material for enhancing electron transfer kinetics and electrocatalytic oxidation of formic acid”, J. Mater. Chem., 2010, 20, 10705–10715.


[64].     N.S. Mathebula, J. Pillay, G. Toschi, J.A. Verschoor, K.I. Ozoemena*, “Recognition of anti-mycolic acid antigens on gold electrode: A potential impedimetric immunosensing platform for active tuberculosis”, Chem. Commun. 2009, 3345-3347 (“HOT ARTICLE”).

[63].     J. Pillay, B.O. Agboola, K.I. Ozoemena*, “Electrochemistry of 2-dimethylaminoethanethiol SAM on gold electrode: Interaction with SWCNT-poly(m-aminobenzene sulphonic acid), electric field-induced protonation-deprotonation, and surface pKa”, Electrochem. Commun. 2009, 11, 1292-1296.

[62].     B.O. Agboola, S.L. Vilakazi, K.I. Ozoemena*, “Electrochemistry at cobalt(II) tetrasulfophthalocyanine-multi-walled carbon nanotubes modified glassy carbon electrode: a sensing platform for efficient suppression of ascorbic acid in the presence of epinephrine” J. Solid State Electrochem. 2009,13, 1367-1379.

[61].     K.I. Ozoemena*, S.A. Mamuru, T. Fukuda, N. Kobayashi, T. Nyokong,Metal (Co, Fe) Tribenzotetraazachlorin–Fullerene Conjugates: Impact of direct p-bonding on the redox behaviour and oxygen reduction reaction”, Electrochem. Commun. 2009, 11, 1221-1225.

[60].     J. Pillay and K.I. Ozoemena*, “Layer-by-layer self-assembled nanostructured phthalocyaninatoiron(II) / SWCNT-poly(m-aminobenzenesulfonic acid) hybrid system on gold surface: Electron transfer dynamics and amplification of H2O2 response” Electrochim. Acta 2009,54, 5053-5059. (Hot article).

[59].     Raluca-Ioana Stefan-van Staden and K.I. Ozoemena, “Amperometric Immunosensor for the deteromination of 2’,3’-Dideoxyinosine” Anal. Lett. 2009, 42, 758 – 763.

[58].     N.W. Maxakato, C.J. Arendse and K.I. Ozoemena*, “Insights into the electro-oxidation of ethylene glycol at Pt/Ru nanocatalysts supported on MWCNTs: Adsorption-controlled electrode kinetics”, Electrochem. Commun. 2009, 11, 534-537.

[57].     J.H. Zagal, S. Griveau, K.I. Ozoemena, T. Nyokong and F. Bedioui, “Carbon nanotubes, phthalocyanines and porphyrins: Attractive hybrid materials for electrocatalysis and electroanalysis” J. Nanosci. Nanotechnol. 2009, 9, 2201-2214.

[56].     S.A. Mamuru and K.I. Ozoemena*, Impedimetric and Electrocatalytic Properties of Nanostructured Iron(II) phthalocyanine at Pyrolytic Graphite Electrode”, Mater. Chem. Phys. 2009, 114, 113-119.

[55].     K.I. Ozoemena, R.-I. Stefan–van Staden and T. Nyokong, “Metallophthalocyanine based carbon paste electrodes for the determination of 2’,3’-Dideoxyinosine” Electroanalysis 2009, 21, 1651-1654.


[54].     A.S. Adekunle, J. Pillay and K.I. Ozoemena*, “Electrocatalysis of 2-Diethylaminoethanethiol at Nickel Nanoparticle-Electrodecorated Single-Walled Carbon Nanotube Platform: An Adsorption-Controlled Electrode Process”, Electroanalysis 2008, 20, 2587-2591.

[53].     B.O. Agboola, A. Mocheko, J. Pillay, K.I. Ozoemena*, “Nanostructured Cobalt Phthalocyanine–Single-Walled Carbon Nanotube Platform: Electron Transport and Electrocatalytic Activity on Epinephrine”, J. Pophyrins Phthalocyanines 2008 12, 1289- 1299.

[52].     M. Siswana, K.I. Ozoemena* and T. Nyokong, “Electrocatalytic Detection of Amitrole at Multi-Walled Carbon Nanotube-Iron(II)tetra-aminophthalocyanine Platform”, Sensors 2008, 8, 5096-5105.

[51].     C.M. Zvinwanda, J.O.Okonkwo, V. Mpangela, J. Phaleng, P. N. Shabalala,T. Dennis, P. Forbes, N.M. Agyei,  K.I. Ozoemena, “Biosorption of toxic metals: The Potential use of maize tassel for the removal of Pb(II) from aqueous solutions", Fres. Environ. Bull. (FEB), 2008, 17, 814-818.

[50].     D. Nkosi and K.I. Ozoemena*, “Interrogating the electrocatalytic properties of coordination self-assembled nanostructures of single-walled carbon nanotube–octa(hydroxyethylthio)phthalocyaninatoiron (II) using thiocyanate as an analytical probe”, J. Electroanal. Chem. 2008, 621, 304-313.

[49].     B.O. Agboola and K.I. Ozoemena*,Efficient electrocatalytic detection of epinephrine at gold electrodes modified with self-assembled metallo-octacarboxyphthalocyanine complexes, Electroanalysis 2008, 20, 1696-1707.

[48].     A.S. Adekunle and K.I. Ozoemena*, Insights into electro-oxidation of hydrazine at single-walled carbon nanotube-modified edge plane pyrolytic graphite electrodes electro-decorated with metal and metal oxide films, J. Solid State Electrochem. 2008, 12, 1325-1336. doi/10.1007/s10008-008-0539-x

[47].     A.S. Adekunle and K.I. Ozoemena*, Electron transfer behaviour of single-walled carbon nanotubes electro-decorated with nickel and nickel oxide layers, Electrochim. Acta. 2008, 53, 5774-5782.

[46].     B.O. Agboola and K.I. Ozoemena*, “Self-assembly and heterogeneous electron transfer properties of metallo-octacarboxyphthalocyanine complexes on gold electrode”, Phys.Chem.Chem.Phys 2008, 10, 2399 - 2408.

[45].     K.I. Ozoemena*, D. Nkosi and J. Pillay, “Influence of solution pH on the electron transport of the self-assembled nanoarrays of single-walled carbon nanotube-Cobalt tetraaminophthalocyanine on gold electrodes: Electrocatalytic detection of epinephrine” Electrochim. Acta 2008, 53, 2844-2851.

[44].     D. Nkosi and K.I. Ozoemena* “Self-assembled nano-arrays of single-walled carbon nanotube–octa(hydroxyethylthio)phthalocyaninatoiron(II) on gold surfaces: Impacts of SWCNT and solution pH on electron transfer kinetics”, Electrochim. Acta 2008, 53, 2782-2793.


[43].     P.N. Mashazi, P. Westbroek, K.I. Ozoemena and T. Nyokong, “Surface chemistry and electrocatalytic behaviour of tetra-carboxy substituted iron, cobalt and manganese phthalocyanine monolayers on gold electrode”, Electrochim. Acta 2007, 53, 1858-1869.

[42].     J. Pillay and K.I. Ozoemena*, Efficient electron transport across nickel powder modified basal plane pyrolytic graphite electrode: Sensitive detection of sulfhydryl degradation products of the V-type nerve agents, Electrochem. Commun. 2007, 9, 1816-1823.

[41].     J. Pillay and K.I. Ozoemena*, “Single-walled carbon nanotube-induced crystallinity on the electropolymeric film of tetraaminophthalocyaninatonickel(II) complex: Impact  on  the rate of heterogeneous electron transfer”, Chem. Phys. Lett.  2007, 441, 72-77.

[40].     K.I. Ozoemena*, T. Nyokong, D. Nkosi, I. Chambrier, and M.J. Cook, “Insights into the Surface and Redox Properties of Single-Walled Carbon Nanotube–Cobalt(II) tetra-aminophthalocyanine Self-Assembled on Gold Electrode”, Electrochim. Acta 2007, 52, 4132-4143.

[39].     B. Agboola, P. Westbroek, K.I. Ozoemena and T. Nyokong, “Voltammetric characterisation of the self-assembled monolayers(SAMs) of benzyl- and dodecyl-mercapto tetra substituted metallophthalocyanines complexes”, Electrochem. Commun. 2007, 9, 310-316.

[38].     J. Pillay and K.I. Ozoemena*, “Electrochemical properties of surface-confined films of single-walled carbon nanotubes functionalised with cobalt(II)tetra-aminophthalocyanine: Electrocatalysis of sulfhydryl degradation products of  V-type nerve agents”, Electrochim. Acta 2007, 52, 3630-3640.

[37].     B. Agboola, K.I. Ozoemena, P. Westbroek and T. Nyokong, “Synthesis and electrochemical properties of dodecyl-mercapto tetrasubstituted manganese phthalocyanine complexes”, Electrochim. Acta 2007, 52, 2520-2526.

[36].     F. Matemadombo, P. Westbroek, T. Nyokong, K.I. Ozoemena, K. De Clerck and P. Kiekens, “Immobilization of tetra-amine substituted metallophthalocyanines at gold surfaces modified with mercaptoproprionic acid or DTSP-SAMs”, Electrochim. Acta 2007,  52, 2024-2031.


[35].     M. Siswana, K.I. Ozoemena and T. Nyokong, “Electrocatalysis of asulam on cobalt phthalocyanine modified multi-walled carbon nanotubes immobilized on a basal plane pyrolytic graphite electrode”, Electrochim. Acta 2006, 52, 114-122.

[34].     P.N. Mashazi, K. I. Ozoemena* and T. Nyokong, “Tetra carboxylic acid cobalt phthalocyanine SAM on gold: Potential applications as amperometric sensor for H2O2 and fabrication of glucose biosensor”, Electrochim. Acta 2006, 52, 177-186.

[33].     B. O. Agboola, K.I. Ozoemena* and T. Nyokong, “Electrochemical properties of benzylmercapto and dodecylmercapto tetra substituted nickel phthalocyanine complexes: electrocatalytic oxidation of nitrite”, Electrochim. Acta 2006, 51 6470-6478.

[32].     K.I. Ozoemena*, “Anodic oxidation and amperometric sensing of hydrazine at a glassy carbon electrode modified with cobalt (II) phthalocyanine–cobalt (II) tetraphenylporphyrin (CoPc-(CoTPP)4) supramolecular complex”, Sensors 2006, 6,  874-891.

[31].     K.I. Ozoemena*, J. Pillay and T. Nyokong, “Preferential electrosorption of cobalt (II) tetra-aminophthalocyanine at single-wall carbon nanotubes immobilised on a basal plane pyrolytic graphite electrode”, Electrochem. Commun. 2006, 8, 1391-1396.

[30].     K.I. Ozoemena* and T. Nyokong, “Novel amperometric glucose biosensor based on an ether-linked cobalt(II) phthalocyanine–cobalt(II) tetraphenylporphyrin pentamer as a redox mediator”, Electrochim. Acta 2006, 51, 5131-5136. (Hot article).

[29].     R.I. Stefan-van Staden, R.G. Bokretsion, K.I. Ozoemena, J.F. van Staden and H.Y. Aboul-Enein, Enantioselective potentiometric membrane electrodes based on different chiral selectors for the assay of S-Flurbiprofen” Electroanalysis 2006, 18, 1718-1721. doi/pdf/10.1002/elan.200603574

[28].     R.I. Stefan, R.G. Bokretsion, K.I. Ozoemena and H.Y. Aboul-Enein, “Utilization of maltodextrin-based enantioselective potentiometric membrane electrodes for the enantioselective assay of S-Flurbiprofen” Anal. Lett. 2006, 39, 1065-1073.

[27].     M. Siswana, K.I. Ozoemena* and T. Nyokong, “Electrocatalytic behaviour of carbon paste electrodes modified with iron (II) phthalocyanine nanoparticles towards the detection of amitrole”, Talanta 2006, 69, 1136-1142.

[26].     P.N. Mashazi, K. I. Ozoemena, D.M. Maree and T. Nyokong, Self-Assembled Monolayers (SAMs) of CoPc covalently attached onto a preformed Mercaptoethanol SAM: A Novel Method, Electrochim. Acta 2006, 51, 3489-3494.

[25].     B. Agboola, K.I. Ozoemena and T. Nyokong, “Synthesis and electrochemical characterization of benzyl mercapto and dodecythiol tetra substituted cobalt, iron, and zinc phthalocyanine complexes”, Electrochim. Acta 2006, 51, 4379-4387.

[24].     B. Agboola, K.I. Ozoemena and T. Nyokong, “Comparative efficiency of immobilized non-transition metal phthalocyanine photosensitisers for the visible light transformation of phenol and chlorophenols”, J. Mo.l. Catalysis A. 2006, 248, 84-92.

[23].     K.I. Ozoemena*, Z. Zhao and T. Nyokong, “Electropolymerizable iron (III) and cobalt (II) dicyanophenoxy tetraphenylporphyrin complexes: Potential electrocatalysts”, Inorg. Chem. Commun. 2006, 9, 223-227. (Hot article).

[22].     K.I. Ozoemena* and T. Nyokong, “Comparative electrochemistry and electrocatalytic activities of cobalt, iron and manganese phthalocyanine complexes axially co-ordinated to mercaptopyridine self-assembled monolayer at gold electrodes”, Electrochim.  Acta 2006, 51, 2669-2677.


[21].     F. Matemadombo, M.D. Maree, K.I. Ozoemena, P. Westbroek and T. Nyokong, “Synthesis, electrochemical and spectroelectrochemical studies of octaalkylsubstituted phthalocyanines”, J. Porphyrins Phthalocyanines 2005, 9, 484-490.

[20].     K.I. Ozoemena and T. Nyokong, “Electrocatalytic oxidation and detection of hydrazine at gold electrode modified with iron phthalocyanine complex linked to mercaptopyridine self-assembled monolayer”, Talanta 2005, 67, 162-168.

[19].     K.I. Ozoemena, Z.X. Zhao and T. Nyokong, “Immobilized cobalt(II) phthalocyanine–cobalt(II) porphyrin pentamer at a glassy carbon electrode: Applications to efficient amperometric sensing of hydrogen peroxide in neutral and basic media”, Electrochem. Comm. 2005, 7,

[18].     K.I. Ozoemena and R.I. Stefan, “Enantioselective potentiometric membrane electrodes based on α-, β- and γ-cyclodextrins as chiral selectors for the assay of L-proline”, Talanta 2005, 66, 501-504.

[17].     K.I. Ozoemena* and T. Nyokong, “Surface electrochemistry of iron phthalocyanine axially ligated to 4-mercaptopyridine self-assembled monolayers at gold electrode: Applications to electrocatalytic oxidation and detection of thiocyanate”, J. Electroanal. Chem. 2005, 579,

[16].     Z.X. Zhao, K.I. Ozoemena, D.M. Maree and T. Nyokong, “Synthesis and electrochemical studies of a covalently linked cobalt(II)phthalocyanine–cobalt(II)porphyrin conjugate”, Dalton Trans. 2005, 1241-1248 (doi: 10.1039/B418611G).

[15].     K.I. Ozoemena, R.I. Stefan, J.F. van Staden and H. Y. Aboul-Enein, “Enantioanalysis of S-perindopril using different cyclodextrin-based potentiometric sensors”, Sensors and Actuators B. 2005, 105, 425-429.

[14].     B. Agboola, K.I. Ozoemena and T. Nyokong, “Hydrogen peroxide oxidation of 2-chlorophenol and 2, 4, 5-trichlorophenol catalyzed by monomeric and aggregated cobalt tetrasulfophthalocyanine”, J. Mol. Catalysis. A.2005, 227, 209-216.


[13].     K.I. Ozoemena, R.I. Stefan and T. Nyokong, “Determination of 2’,3’-dideoxyinosine using iron (II) phthalocyanine modified carbon paste electrode”, Anal. Lett. 2004, 37, 2641-2648.

[12].     K.I. Ozoemena, R.I. Stefan, J.F. van Staden, H.Y. Aboul-Enein, “Utilization of maltodextrin-based enantioselective potentiometric membrane electrodes for the enantioselective assay of S-perindopril”, Talanta 2004, 62, 681-685.

[11].     K.I. Ozoemena and R.I. Stefan, “Enantioselective, potentiometric membrane electrodes based on maltodextrins. Their applications for the determination of L-proline”, Sensors and Actuators B 2004, 98, 97-100.

[10].     K.I. Ozoemena, R.I. Stefan, J.F. van Staden, H.Y. Aboul-Enein, “Enantioselective, potentiometric membrane electrode based on vancomycin as chiral selector for the assay of S-Perindopril”, Instrum. Sc. Technol., (Marcel Dekker Inc., New York) 2004, 32, 371-378.


[9].       K.I. Ozoemena* and T. Nyokong, “Synthesis, spectroscopy and photochemistry of thiol-derivatised phthalocyaninatozinc(II) complexes”, Inorg. Chem. Commun.  2003, 6, 1192-1195.

[8].       K.I. Ozoemena* and T. Nyokong, “Electrochemical behaviour of thiol-derivatised zinc (II) phthalocyanine complexes and their self-immobilised films at gold electrodes”, Microchem. J. 2003, 75, 241-247.

[7].       K.I. Ozoemena, T. Nyokong and P. Westbroek “Self-assembled monolayers of cobalt and iron phthalocyanine complexes on gold electrodes: Comparative surface electrochemistry and interaction with thiols and thiocyanate”, Electroanalysis 2003, 15, 1762-1770.


[6].       K. Ozoemena and T. Nyokong, “Octabutylthiophthalocyaninatoiron(II): electrochemical properties and interaction with cyanide”, J. Chem. Soc., Dalton Trans. 2002,1806-1811.

[5].      K. Ozoemena, P. Westbroek and T. Nyokong, “Cyclic voltammetric studies of octabutylthiophthalocyaninatocobalt(II) and its self-assembled monolayer (SAM) on gold electrode”, J. Porphyrins Phthalocyanines 2002, 6, 98-106.

[4].      K. Ozoemena and T. Nyokong, “Voltammetric characterization of the self-assembled monolayer (SAM) of octabutylthiophthalocyaninatoiron(II): A potential electrochemical sensor”,  Electrochim. Acta 2002, 47, 4035-4043.


[3].     K. Ozoemena, N. Kuznetsova and T. Nyokong, “Photosensitized transformation of 4-chlorophenol in the presence of aggregated and non-aggregated metallophthalocyanines’ J. Photochem. Photobiol. A. 2001, 139, 217-224.

[2].     K. Ozoemena, N. Kuznetsova and T. Nyokong, “Comparative photosensitised transformation of polychlorophenols with different sulfonated metallophthalocyanine complexes in aqueous medium”, J. Mol. Catalysis. A. 2001, 176, 29-40.

[1].      K. Ozoemena, P. Westbroek and T. Nyokong, “Long-term stability towards cysteine detection using gold modified with a self-assembled monolayer of octabutylthiophthalocyaninatocobalt(II)”, Electrochem. Commun. 2001, 3, 529-534.