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Kenneth Ikechukwu Ozoemena

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Kenneth Ikechukwu Ozoemena
NationalityNigerian
Occupation(s)Physical chemist, materials scientist, and academic
Academic background
EducationBSc (Hons) in Industrial Chemistry
MSc in Chemistry
MSc in Pharm Chemistry
Ph.D. in Chemistry
Alma materAbia State University
University of Lagos
Rhodes University
University of Pretoria
ThesisMetallophthalocyanines as photocatalysts for transformation of chlorophenols and self-assembled monolayers for electrochemical detection of thiols and cyanides (2003)
Academic work
InstitutionsUniversity of the Witwatersrand
Cornell University

Kenneth Ikechukwu Ozoemena is a Nigerian physical chemist, materials scientist, and academic. He is a research professor at the University of the Witwatersrand (Wits) in Johannesburg[1] where he Heads the South African SARChI Chair in Materials Electrochemistry and Energy Technologies (MEET), supported by the Department of Science and Innovation (DSI), National Research Foundation (NRF) and Wits.[2]

Ozoemena group conducts interdisciplinary research across physics, chemistry, biomedical, chemical, and metallurgical engineering.[1] He has authored numerous peer-reviewed articles,[3] 11 book chapters, and edited books, including Nanomaterials for Fuel Cell Catalysis, and Nanomaterials in Advanced Batteries and Supercapacitors.[4]

Ozoemena became a Fellow of the Royal Society of Chemistry (FRSC) in 2011, Fellow of the African Academy of Sciences (FAAS) in 2015, and a Member of the Academy of Science of South Africa (ASSAf) in 2016.[5] He serves as an Associate Editor for Electrocatalysis[6] and co-Editor-in-Chief of Electrochemistry Communications.[7]

Earl life and education

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He is an indigene of Obinikpa Umuokpara, Okohia in Umuna, Onuimo local government area of Imo State, Nigeria. Ozoemena earned his Baccalaureate degree in Industrial Chemistry from the University of Abia in 1992 and went on to receive master's degrees in Chemistry and Pharmaceutical Chemistry in 1997 and 1998, respectively, from the University of Lagos. In 2003, he completed his Ph.D. at Rhodes University in South Africa and served as a Research Fellow at the University of Pretoria.[1]

Career

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Following his Ph.D., Ozoemena began his academic career as an Andrew W. Mellon Lecturer of Chemistry at Rhodes University in 2004 and held an appointment at the University of Pretoria as a Senior Lecturer of Chemistry in 2006, and later as Extraordinary Professor of Chemistry from 2009 to 2017. He was also appointed as an Extraordinary Professor of Chemistry at the University of the Western Cape from 2011 to 2014, and an Honorary Professor of Chemistry at the University of the Witwatersrand from 2014 to 2017. Subsequently, in 2017, after about an 8-year stint at the Council for Scientific and Industrial Research (CSIR), he was appointed as professor, and later promoted to research professor at the School of Chemistry of the University of the Witwatersrand.[8] He serves as an Honorary Visiting professor at the Wuhan University of Technology, China.[9]

Ozoemena was elected African representative of the International Society of Electrochemistry from 2010 to 2015 and Chair of the Scientific Meeting Committee (SMC) of the International Society of Electrochemistry. He was the Chair of the Organising Committee of the 70th Annual Meeting of the International Society of Electrochemistry (ISE) Durban, the first conference of the ISE on the African continent. Subsequently, he served as the lead Guest Editor of the special issue of the conference in Electrochimica Acta.[10]

Research

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Ozoemena has focused his research in the field of materials electrochemistry, with a specific interest in advanced batteries, fuel cells, and electrochemical sensors as the primary aspects of investigation.

Lithium-ion batteries

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Ozoemena has worked on improving the structural and electrochemical properties of lithium-ion batteries.[11][12] One of his innovations include the use of microwave-assisted synthesis[13][14] to mitigate the problems of manganese dissolution and the so-called Jahn-Teller distortion which conspire against the development and commercialization of high-energy and low-cost manganese-based cathode materials.[15]

Aqueous mobile ion batteries & supercapacitors

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Ozoemena's enquiry on the microwave-assisted synthesis and use of low cost and environmentally friendly manganese-based raw materials has led to the discovery of a new strategy of making triplite manganese fluorophosphate.[16][17] In addition, Ozoemena group has demonstrated that nanostructured manganese-based complexes are promising materials for the development of high-performance supercapacitors and pseudocapacitors.[18][19]

Fuel cells & electrolyzers

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Ozoemena worked on the use of microwave-assisted synthesis to bring about ‘top-down’ nanosizing of palladium catalysts, introducing the term “MITNAD” which is an acronym for “microwave-induced top-down nanostructuring and decoration”.[20] He has continued to explore the application of this technique and related techniques for the development of high-performance electrocatalysts for fuel cells and electrolyzers.[21][22]

Zinc-ion and rechargeable zinc-air batteries

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Ozoemena and collaborators have studied several electrode materials that can enhance the efficacy of zinc-ion and rechargeable zinc-air batteries (RZAB).[23] The key research focus in this field has been to develop real and relevant RZAB technology for stationary and mobile applications.[24]

Electrochemical sensors

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Ozoemena has contributed in connecting biomedicine with electrochemistry, resulting in the creation of electrochemical bio- and immuno-sensors capable of detecting diseases that are mostly found in resource-limited countries, including tuberculosis in HIV-positive patients,[25] vibrio cholera toxins in water bodies,[26] substance abuse such as tramadol,[27] and human papillomavirus (HPV) biomarkers for cervical cancer.[28]

Awards and honors

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  • 2003-2013 – World's top 1% of Scientists within Chemistry, Thomson Reuters’ ISI Essential Science Indicators
  • 2008 – Chartered Chemist (CChem), Royal Society of Chemistry
  • 2011 – Elected Fellow, Royal Society of Chemistry
  • 2014 – The CEO's Award, Council for Scientific & Industrial Research (CSIR)
  • 2014 – Listed as #2 amongst the “Twenty most productive South African authors of energy papers (2000–2011)”, Academy of Science of South Africa (ASSAf).
  • 2015 – Elected Fellow, African Academy of Sciences
  • 2016 – Elected member, Academy of Science of South Africa (ASSAf)
  • 2016 – Innovation Award, Council for Scientific & Industrial Research (CSIR)
  • 2019 – World Top 2% Scientists, Stanford University, PLoS Biology[29]
  • 2020 – World Top 2% Scientists, PLoS Biology[29]
  • 2021 – SARChI Chair (Tier 1), DSI-NRF-Wits
  • 2023 – 'A'-rated Scientist, National Research Foundation (NRF)
  • 2023 - Vice President (Southern Africa) and member of the governing council of the African Academy of Sciences

Bibliography

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Edited books

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  • Recent Advances in Analytical Electrochemistry (2007) ISBN 978-8178952741
  • Nanomaterials in Advanced Batteries and Supercapacitors (2016) ISBN 978-3319260808
  • Nanomaterials for Fuel Cell Catalysis (2016) ISBN 978-3319262499

Selected articles

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  • Mathebula, N.S., Pillay, J., Toschi, G., Verschoor, J.A. & Ozoemena, K.I. (2009). Recognition of anti-mycolic acid antigens on gold electrode: A potential impedimetric immunosensing platform for active tuberculosis. Chemical Communications, 3345–3347 (“HOT ARTICLE”). doi.org/10.1039/B905192A
  • Jafta, C.J., Mathe, M.K., Manyala, N., Roos, W.D. & Ozoemena, K.I. (2013). Microwave-Assisted Synthesis of High-Voltage Nanostructured LiMn1.5Ni0.5O4 spinel: Tuning the Mn3+ Content and Electrochemical Performance, ACS Applied Materials & Interfaces, 5, 7592–7598. doi.org/10.1021/am401894t
  • Fashedemi, O.O., Miller, H.A., Marchionni, A., Vizza, F. & Ozoemena, K.I. (2015). 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. Journal of Materials Chemistry A, 3, 7145–7156. doi.org/10.1039/C5TA00076A
  • Ozoemena, K. I. (2016). Nanostructured platinum-free electrocatalysts in alkaline direct alcohol fuel cells: catalyst design, principles and applications. RSC Aadvances, 6(92), 89523-89550 doi.org/10.1039/C6RA15057H
  • Raju, K., Han, H., Velusamy, D.B., Jiang, Q., Yang, H., Nkosi, F.P., Palaniyandy, N., Makgopa, K., Bo, Z. & Ozoemena, K.I. (2020). Rational Design of 2D Manganese Phosphate Hydrate Nanosheets as Pseudocapacitive Electrodes. ACS Energy Letters 5, 23–30; doi.org/10.1021/acsenergylett.9b02299
  • Peteni, S., Ozoemena, O.C., Khawula, T., Haruna, A.B., Rawson, F.J., Shai, L.J., Ola, O. & Ozoemena, K.I. (2023). Electrochemical Immunosensor for Ultra-Low Detection of Human Papillomavirus Biomarker for Cervical Cancer. ACS Sensors, 8 (7), 2761–2770; doi.org/10.1021/acssensors.3c00677

References

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  1. ^ a b c "Kenneth Ozoemena". www.wits.ac.za.
  2. ^ "South African Research Chairs Initiative".
  3. ^ "Kenneth Ikechukwu Ozoemena". scholar.google.com.
  4. ^ "Nanostructured platinum-free electrocatalysts in alkaline direct alcohol fuel cells" (PDF).
  5. ^ "Nanostructured platinum-free electrocatalysts in alkaline direct alcohol fuel cells: catalyst design, principles and application" (PDF).
  6. ^ "Electrocatalysis". Springer.
  7. ^ "Editorial board – Electrochemistry Communications | ScienceDirect.com by Elsevier". www.sciencedirect.com.
  8. ^ "Ozoemena". African Scientists Directory.
  9. ^ "Advanced Sensors and Energy Materials 编委会又获知名国际科学家加盟！". 知乎专栏.
  10. ^ Ozoemena, Kenneth I.; Limson, Janice; Mathe, Mkhulu K. (February 20, 2021). "Electrochemistry: Linking resources to sustainable development (ISE 2019): Foreword". Electrochimica Acta. 370: 137718. doi:10.1016/j.electacta.2021.137718. S2CID 234034446 – via ScienceDirect.
  11. ^ Palaniyandy, Nithyadharseni; Nkosi, Funeka P.; Raju, Kumar; Ozoemena, Kenneth I. (January 15, 2019). "Conversion of electrolytic MnO2 to Mn3O4 nanowires for high-performance anode materials for lithium-ion batteries". Journal of Electroanalytical Chemistry. 833: 79–92. doi:10.1016/j.jelechem.2018.11.002. S2CID 105865267 – via ScienceDirect.
  12. ^ Jafta, Charl J.; Ozoemena, Kenneth I.; Mathe, Mkhulu K.; Roos, Wiets D. (December 15, 2012). "Synthesis, characterisation and electrochemical intercalation kinetics of nanostructured aluminium-doped Li[Li0.2Mn0.54Ni0.13Co0.13]O2 cathode material for lithium ion battery". Electrochimica Acta. 85: 411–422. doi:10.1016/j.electacta.2012.08.074 – via ScienceDirect.
  13. ^ Palaniyandy, Nithyadharseni; Kebede, Mesfin A.; Ozoemena, Kenneth I.; Mathe, Mkhulu K. (July 1, 2019). "Rapidly Microwave-Synthesized SnO2 Nanorods Anchored on Onion-Like Carbons (OLCs) as Anode Material for Lithium-Ion Batteries". Electrocatalysis. 10 (4): 314–322. doi:10.1007/s12678-019-0508-4. S2CID 104462304 – via Springer Link.
  14. ^ Haruna, Aderemi B.; Ozoemena, Kenneth I. (December 1, 2019). "Effects of microwave irradiation on the electrochemical performance of manganese-based cathode materials for lithium-ion batteries". Current Opinion in Electrochemistry. 18: 16–23. doi:10.1016/j.coelec.2019.08.005. S2CID 202878775 – via ScienceDirect.
  15. ^ Haruna, Aderemi B.; Barrett, Dean H.; Rodella, Cristiane B.; Erasmus, Rudolph M.; Venter, Andrew M.; Sentsho, Zeldah N.; Ozoemena, Kenneth I. (September 10, 2022). "Microwave irradiation suppresses the Jahn-Teller distortion in Spinel LiMn2O4 cathode material for lithium-ion batteries". Electrochimica Acta. 426: 140786. doi:10.1016/j.electacta.2022.140786. S2CID 250189924 – via ScienceDirect.
  16. ^ Nkosi, Funeka P.; Raju, Kumar; Palaniyandy, Nithyadharseni; Reddy, M. V.; Billing, Caren; Ozoemena, Kenneth I. (November 2, 2017). "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". Journal of the Electrochemical Society. 164 (13): A3362. doi:10.1149/2.1721713jes.
  17. ^ Palaniyandy, Nithyadharseni; Nkosi, Funeka P.; Raju, Kumar; Ozoemena, Kenneth I. (April 15, 2018). "Fluorinated Mn3O4 nanospheres for lithium-ion batteries: Low-cost synthesis with enhanced capacity, cyclability and charge-transport". Materials Chemistry and Physics. 209: 65–75. doi:10.1016/j.matchemphys.2018.01.003 – via ScienceDirect.
  18. ^ Makgopa, Katlego; M. Ejikeme, Paul; J. Jafta, Charl; Raju, Kumar; Zeiger, Marco; Presser, Volker; I. Ozoemena, Kenneth (September 1, 2015). "A high-rate aqueous symmetric pseudocapacitor based on highly graphitized onion-like carbon/birnessite-type manganese oxide nanohybrids". Journal of Materials Chemistry A. 3 (7): 3480–3490. doi:10.1039/C4TA06715K. hdl:2263/44136.
  19. ^ "High-performance symmetric electrochemical capacitor based on graphene foam and nanostructured manganese oxide".
  20. ^ Fashedemi, Omobosede O.; Julies, Basil; Ozoemena, Kenneth I. (February 12, 2013). "Synthesis of Pd-coated FeCo@Fe/C core–shell nanoparticles: microwave-induced 'top-down' nanostructuring and decoration". Chemical Communications. 49 (20): 2034–2036. doi:10.1039/C3CC38672D. PMID 23381686 – via pubs.rsc.org.
  21. ^ Lekitima, Joel N.; Ozoemena, Kenneth I.; Jafta, Charl J.; Kobayashi, Nagao; Song, Yang; Tong, Dennis; Chen, Shaowei; Oyama, Munetaka (January 29, 2013). "High-performance aqueous asymmetric electrochemical capacitors based on graphene oxide/cobalt(II)-tetrapyrazinoporphyrazine hybrids". Journal of Materials Chemistry A. 1 (8): 2821–2826. doi:10.1039/C2TA01325H. hdl:2263/37003 – via pubs.rsc.org.
  22. ^ Nkosi, Funeka; Palaniyandy, Nithyadharseni; Raju, Kumar; Ozoemena, Kenneth I. (December 1, 2020). "Influence of Microwave Irradiation and Combustion Fuels on the Rate Capability and Cycle Performance of Li 1.2 Mn 0.52 Ni 0.13 Co 0.13 Al 0.02 O 2 Layered Material". Electroanalysis. 32 (12): 3159–3169. doi:10.1002/elan.202060373. S2CID 226316907 – via CrossRef.
  23. ^ Haruna, Aderemi B.; Ozoemena, Kenneth I. (June 1, 2020). "Manganese-based bifunctional electrocatalysts for zinc-air batteries". Current Opinion in Electrochemistry. 21: 219–224. doi:10.1016/j.coelec.2020.02.021. S2CID 216338418 – via ScienceDirect.
  24. ^ Palaniyandy, Nithyadharseni; Nkosi, Funeka Phumzile; Raju, Kumar; Ozoemena, Kenneth I.; Mathe, Mkhulu K. (2018). "Zinc-Ion Inserted a-MnO2/Onion like Carbon (OLC) Nanorod Composite Cathode Materials for Aqueous Zn-Ion Battery". ECS Meeting Abstracts (3): 254. doi:10.1149/ma2018-01/3/254.
  25. ^ Mathebula, Nsovo S.; Pillay, Jeseelan; Toschi, Gianna; Verschoor, Jan A.; Ozoemena, Kenneth I. (June 5, 2009). "Recognition of anti-mycolic acid antibody at self-assembled mycolic acid antigens on a gold electrode: a potential impedimetric immunosensing platform for active tuberculosis". Chemical Communications (23): 3345–3347. doi:10.1039/B905192A. hdl:2263/14544. PMID 19503865 – via pubs.rsc.org.
  26. ^ Ozoemena, Okoroike C.; Mathebula, Nsovo S.; Ehirim, Tobechukwu J.; Maphumulo, Tobile; Valikpe, Goodness M.; Shai, Jerry L.; Ozoemena, Kenneth I. (October 1, 2020). "Onion-like carbon re-inforced electrospun polyacrylonitrile fibres for ultrasensitive electrochemical immunosensing of Vibrio cholerae toxin". Electrochimica Acta. 356: 136816. doi:10.1016/j.electacta.2020.136816. S2CID 225507256 – via ScienceDirect.
  27. ^ Ehirim, Tobechukwu J.; Ozoemena, Okoroike C.; Mwonga, Patrick V.; Haruna, Aderemi B.; Mofokeng, Thapelo P.; De Wael, Karolien; Ozoemena, Kenneth I. (December 27, 2022). "Onion-like Carbons Provide a Favorable Electrocatalytic Platform for the Sensitive Detection of Tramadol Drug". ACS Omega. 7 (51): 47892–47905. doi:10.1021/acsomega.2c05722. PMC 9798499. PMID 36591171.
  28. ^ Peteni, Siwaphiwe; Ozoemena, Okoroike C.; Khawula, Tobile; Haruna, Aderemi B.; Rawson, Frankie J.; Shai, Leshweni J.; Ola, Oluwafunmilola; Ozoemena, Kenneth I. (July 28, 2023). "Electrochemical Immunosensor for Ultra-Low Detection of Human Papillomavirus Biomarker for Cervical Cancer". ACS Sensors. 8 (7): 2761–2770. doi:10.1021/acssensors.3c00677. PMC 10391710. PMID 37384904.
  29. ^ a b Ioannidis, John P. A.; Boyack, Kevin W.; Baas, Jeroen (October 16, 2020). "Updated science-wide author databases of standardized citation indicators". PLOS Biology. 18 (10): e3000918. doi:10.1371/journal.pbio.3000918. PMC 7567353. PMID 33064726.
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