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Dr. Peter C. Okafor

Associate Professor
Pure and Applied Chemistry
pcokafor@unical.edu.ng

Peter C. Okafor is the Group Leader of the Corrosion and Electrochemistry Research Group and an Associate Professor of Physical Chemistry in the Department of Pure and Applied Chemistry, University of Calabar, Calabar, Nigeria. He holds a Ph.D. in Physical Chemistry from the University of Calabar, Calabar, Nigeria. He was a Visiting Researcher (Fulbright Scholar) at the Institute for Corrosion and Multiphase Technology, Ohio University, Athens, Ohio, U. S. A. (2003-2004), a CAS-TWAS Postdoctoral Fellow at the State Key Laboratory for Corrosion and Protection of Metal, Institute of Metal Research (IMR), Shenyang, China (2008-2009) and a TWAS-UNESCO Associate at IMR, Shenyang, China (2010-2013). He is a TWAS Young Affiliate Fellow (2010-2014). His research efforts is focused on understanding the mechanism, inhibition and modeling of corrosion processes, and environmental pollution as it relates to corrosion. He has published over 70 articles in both national and international peer-reviewed journals, and in conference proceedings. He was the Lead Guest Editor of a Special Issue of International Journal of Corrosion titled, Green Approaches to Corrosion Mitigation. He is currently a Member of the Editorial Board of the International Research Journal of Pure & Applied Chemistry (SCIENCEDOMAIN international), ISRN Corrosion (International Scholarly Research Network Publishers) and Global Journal of Analytical Chemistry (Simplex Academic Publishers), and an Associate Editor of Global Journal of Pure and Applied Sciences (Bachudo Science Publishers). He is a member of the Chemical Society of Nigeria (CSN), the Institute of Chartered Chemists of Nigeria (ICCON) and the National Association of Corrosion Engineers (NACE) International.

P. C. Okafor, V. I. Osabor and E. E. Ebenso (2007). Eco friendly corrosion inhibitor: Inhibitive action of ethanol extracts of Garcinia kola for the corrosion of mild steel in H2SO4 solutions. Pigment and Resin Technology, 36(5): 299 - 305.


W. Emori, R. A. Etiuma, P. C. Okafor and O. O. Ekerenam (2015). Assessment of Heavy Metals Contamination in Leachate under Waste Dumpsites and Automobile Workshops in Calabar, Nigeria. International Journal of Development and Sustainability (IJDS), 4(10): 999-1015


O. O. Ekerenam, A. L. Ma, Y. G. Zheng, S. Y. He, P. C. Okafor (2018). Evolution of the corrosion product film and its effect on the erosion-corrosion behaviour of two commercial 90Cu-10Ni tubes immersed in seawater. Acta Metallurgica Sinica: in press.


A. I. Ikeuba, B. Zhang, J. Q. Wang, E. H. Han, W. Ke and P. C. Okafor (2018). SVET and SIET study of galvanic corrosion of Al/MgZn2 in aqueous solutions at different pH. Journal of the Electrochemical Society, 163(3): C180-C194.


N.E. Nya, A. I. Ikeuba, P. C. Okafor, B. U. Ugi, V. M. Bassey, A. I. Obike (2018). Mild steel corrosion mitigation in sulphuric acid via benign isolated phytochemicals from Viscum album. Journal of Materials Science and Chemical Engineering, 6: in press.


Obike, A. I., Uwakwe, K. J., Ebeagwu, M. C., Okafor, P. C. and Ogili, E. C. (2018). Thermodynamic and Kinetic Studies of Powerful Eco Friendly Green Inhibitors: Costus afer, Uvaria chamae and Xylopia aethiopia for the Control of Mild Steel Corrosion in HCl Solution. Journal of Physical Chemistry and Biophysics, 8(1): 264-269


K. J. Uwakwe, P. C. Okafor, A. I. Obike, A. I. Ikeuba (2017). Molecular dynamic simulation and quantum chemical calculations for the adsorption of some imidazoline derivatives on iron surface. Global Journal of Pure and Applied Sciences. 23, 2017: 69-80.


W. Emori, S. L. Jiang, D. L. Duan, O. O. Ekerenam, Y. G. Zheng, P. C. Okafor, Y. X. Qiao (2017) Corrosion behavior of carbon steel in amine-based CO2 capture system: effect of sodium sulfate and sodium sulfite contaminants. Materials and Corrosion, 68: 674-682.


E. J. Akpan, P. C Okafor, A. O Aliyu and J. M. Nwaedozie (2015). Assessment of thermodynamic, adso-kinetic and inhibition potentials of Gmelina arborea fruit extract on corrosion of rolled homogenous steel plate in sulphuric acid. Journal of Chemistry and Materials Research, 4(2): 58-70.


E. Jackson, K. E. Essien and P. C. Okafor (2015). A new corrosion inhibitor for mild steel: experimental and theoretical studies. Elixir Corrosion and Dyes, 86: 34978-34983


X. Liu, P. C. Okafor, B. Jiang, H. Hu and Y. G. Zheng (2015). Electrochemical study on the inhibition effect of phenanthroline and its cobalt complex as corrosion inhibitors for mild steel. Journal of Materials Engineering and Performance, 24(9): 3599-3606


X. Liu, P. C. Okafor, B. Jiang, H. Hu and Y. G. Zheng (2015). The inhibitory effect of some bipyridine derivatives on the corrosion behaviour of N80 carbon steel in sulphuric acid solutions. Surface Review and Letters, 22(1), doi: 10.1142/S0218625X15500079.


P.C. Okafor, U.C. Udoh, A.I. Ikeuba, U.J. Ekpe and O. E. Obono (2014). The inhibition of mild steel corrosion by extracts from seeds of Myristica fragrance, Monodora mystica and Parkia biglobosa in sulphuric acid solution. ASUU Journal of Science, 2(1): 34 – 46.


P.C. Okafor, A.I. Ikeuba, N.E. Nya, U.J. Ekpe, V.M. Bassey (2014). Ethanol extracts from Piper guineense as green corrosion inhibitor of mild steel in sulphuric acid solution. ASUU Journal of Science, 2(1): 79 – 98.


P. C. Okafor and E. A. Apebende (2014). Corrosion inhibition characteristics of Thymus Vulgaris, Xylopia aethiopica and Zingiber officinale extracts on mild steel in sulphuric acid solutions. Pigments and Resin Technology, 43(6): 357 - 364.


P. C. Okafor, M. E. Ikpi, U. I. Ekanem, E. E. Ebenso (2013). Effects of extracts from Nauclea latifolia on the dissolution of mild steel in H2SO4 solutions. International Journal of Electrochemical Science, 8: 12278 – 12286.


I. E. Uwah, P. C. Okafor and V. E. Ebiekpe (2013). Inhibitive action of ethanol extracts from Nauclea latifolia on the corrosion of mild steel in H2SO4 solutions and their adsorption characteristics. Arabian Journal of Chemistry, 6(3): 285–293.


I. E. Uwah, B. U. Ugi, P. C. Okafor and A. I. Ikeuba (2013). Comparative study of corrosion inhibition and adsorption characteristics of ethanol extracts of Andrographis paniculata (King bitters) and Vernonia amygdalina (Bitter leaf). International Journal of Applied Chemistry, 9(1): 73-88.


A. I. Ikeuba, P. C. Okafor, U. J. Ekpe and E. E. Ebenso (2013). Alkaloid and Non-Alkaloid Ethanolic Extracts from seeds of Garcinia kola as Green Corrosion Inhibitors of mild steel in H2SO4 solution. International Journal of Electrochemical Science, 8: 7455 - 7467.


M. E. Ikpi, I. I. Udoh, P. C. Okafor, U. J. Ekpe and E. E. Ebenso (2012). Corrosion inhibition and adsorption behaviour of extracts from Piper guineensis on mild steel corrosion in acid media. International Journal of Electrochemical Science, 7: 12193 - 12206.


P. C. Okafor, E. E. Ebenso, A. Y. El-Etre and M. A. Quraishi (2012). Green approaches to corrosion mitigation (Editorial), International Journal of Corrosion, doi:10.1155/2012/908290.


P. C. Okafor, V. E. Ebiekpe, C. F. Azike, G. E. Egbung, E. A. Brisibe and E. E. Ebenso (2012) Inhibitory action of Artemisia annua extracts and artemisinin on the corrosion of mild steel in H2SO4 solution, International Journal of Corrosion, doi:10.1155/2012/768729


P. C. Okafor, C. B. Liu, Y. J. Zhu and Y. G. Zheng (2011). Corrosion and corrosion inhibition behaviour of N80 and P110 carbon steels in CO2-saturated simulated formation water by rosin amide imidazoline. Industrial


O. K. Abiola, M. O. John, P. O. Asekunowo, P. C. Okafor and O. O. James (2011). 3 - [(4 - amino - 2 - methyl - 5 - pyrimidinyl) methyl] - 5 - (2-hydroxyethyl) - 4 - methyl thiazolium chloride hydrochloride as green corrosion inhibitor of copper in HNO3 solution and its adsorption characteristics. Green Chemistry Letters and Reviews, 4(3): 273-279.


V. F. Ekpo, P. C. Okafor, E. E. Ebenso and U. J. Ekpe (2011). Molecular dynamics simulations and quantum chemical calculations for the adsorption of thiosemicarbazone and derivatives on mild steel. International Journal of Electrochemical Science, 6: 1045-1057.


P. C. Okafor, E. E. Ebenso and U. J. Ekpe (2010). Azadirachta indica extracts as corrosion inhibitors for mild steel in acid medium. International Journal of Electrochemical Science, 5: 978 – 993


P. C. Okafor, C. B. Liu, X. Liu, Y. G. Zheng, F. Wang, C. Y. Liu and F. Wang (2010) Corrosion inhibition and adsorption behaviour of imidazoline salt on N80 carbon steel in CO2-saturated solutions and its synergism with thiourea. Journal of Solid State Electrochemistry, 14(8): 1367-1376.


P. C. Okafor, C. B. Liu, X. Liu and Y. G. Zheng (2009). Inhibition of CO2 corrosion of N80 carbon steel by carboxylic quaternary imidazoline and iodide ions additives. Journal of Applied Electrochemistry, 39: 2535-2543.


P. C. Okafor, U. J. Ekpe, U. J. Ibok, B. O. Ekpo, E. E. Ebenso and C. O. Obadimu (2009). Atmospheric corrosion of mild steel in the Niger Delta region of Nigeria. Part 1: Characterization of the Calabar, Cross River State environment. Global Journal of Environmental Sciences, 8(1): 9-18.


P. C. Okafor, I. E. Uwah, O. O. Ekerenam and U. J. Ekpe (2009). Combretum bracteosum extracts as eco-friendly corrosion inhibitor for mild steel in acidic medium. Pigment and Resin Technology, 38(4): 236-241.


P. C. Okafor, B. Brown and S. Nesic (2009). CO2 corrosion of carbon steel in the presence of acetic acid at higher temperatures. Journal of Applied Electrochemistry, 39(6): 873-877.


X. Liu, Y. G. Zheng and P. C. Okafor (2009) Carbon dioxide corrosion inhibition of N80 carbon steel in liquid- and liquid/particle two-phase flow by hydroxyethyl imidazoline derivatives. Materials and Corrosion, 60(7): 507-513.


Y. X. Qiao, Y. G. Zheng, W. Ke and P. C. Okafor (2009). Electrochemical behaviour of high nitrogen stainless steel in acidic solutions. Corrosion Science, 51(5): 979-986.


X. Liu, P. C. Okafor and Y. G. Zheng (2009). The inhibition of CO2 corrosion of N80 steel in single liquid phase and liquid/particle two-phase flow by aminoethyl imidazoline derivatives. Corrosion Science, 51(4): 744-751.


P. C. Okafor, X. Liu and Y. G. Zheng (2009). Corrosion inhibition of mild steel by ethylamino imidazoline derivative in CO2-saturated solution. Corrosion Science, 51(4): 761-768. (April to June 2009 5th Hottest Corrosion Science Article)


P. C. Okafor and Y. G. Zheng (2009). Influence of iodide ions on the inhibition behaviour of methylbenzyl quaternary imidazoline derivative on mild steel in H2SO4 solutions. Corrosion Science, 51(4): 850-859.


Y. X. Qiao, Y. G. Zheng, P. C. Okafor and W. Ke (2009), Electrochemical behaviour of high nitrogen bearing stainless steel in acidic chloride solution: Effects of oxygen, acid concentration and surface roughness. Electrochimica Acta, 54(8): 2298-2304.


P. C. Okafor, M. E. Ikpi, I. E. Uwah, E. E. Ebenso, U. J. Ekpe and S. A. Umoren (2008). Inhibitory action of Phyllanthus amarus extracts on the corrosion of mild steel in acidic media. Corrosion Science, 50(8): 2310–2317.


P. C. Okafor, E. E. Oguzie, G. E. Iniama, M. E. Ikpi and U. J. Ekpe (2008). Corrosion inhibition properties of thiosemicarbazone and semicarbazone derivatives in concentrated acid environment. Global Journal of Pure and Applied Sciences, 14(1): 89 - 95


S. A. Umoren, I. B. Obot, E. E. Ebenso and P. C. Okafor (2008). Eco-friendly inhibitors from naturally occurring exudates gums for aluminium corrosion inhibition in acidic medium. Portugaliae Electrochimica Acta, 26(3): 267 – 282.


P. C. Okafor and S. Nesic. (2007). Effect of Acetic acid on CO2 Localized Corrosion of Carbon Steel in Vapor-Water Two-Phase Horizontal Flow. Chemical Engineering Communications, 194(2): 141 - 157.


P. C. Okafor and E. E. Ebenso (2007). Inhibitory action of Carica papaya extracts on the corrosion of mild steel in acidic media and their adsorption characteristics. Pigment and Resin Technology, 36(3): 134 - 140.


S. A. Umoren, O. Ogbobe, P. C. Okafor and E. E. Ebenso (2007). Polyethene glycol and polyvinyl alcohol as corrosion inhibitors for aluminium in acidic medium. Journal of Applied Polymer Science, 105: 3363 - 3370.


S. A. Umoren, E. E. Ebenso, P. C. Okafor, U. J. Ekpe and O. Ogbobe (2007). Effect of halide ions on the corrosion inhibition of aluminium in alkaline medium using polyvinyl alcohol. Journal of Applied Polymer Science, 103(5): 2810 - 2816.


S. A. Umoren, E. E. Ebenso, P. C. Okafor and O. Ogbobe (2006). Water soluble polymers as corrosion inhibitors. Pigment and Resin Technology, 35(6): 346-352.


S. A. Umoren, I. B. Obot, E. E. Ebenso, P. C. Okafor and E. E. Oguzie. (2006). Gum Arabic as a potential corrosion inhibitor for aluminium in alkaline medium and its adsorption characteristics. Anti-Corrosion Methods and Materials, 53(5): 277 - 282.


P. C. Okafor, U. J. Ekpe, E. E. Ebenso, E. E. Oguzie, N. S. Umo and A. R. Etor (2006). Extract of Allium cepa and Allium sativum as corrosion inhibitor of mild steel in HCl solution. Transactions of SAEST (Society for Advancement of Electrochemical Science and Technology), 41: 82 - 87


E. E. Oguzie, A. I. Onuchukwu, P. C. Okafor and E. E. Ebenso (2006). Corrosion inhibition and adsorption behaviour of Ocimum basilicum extract on aluminium. Pigment and Resin Technology, 35(2): 63 – 70.


P. C. Okafor, U. J. Ekpe, E. E. Ebenso, E. M. Umoren and K. E. Leizou (2005). Inhibition of mild steel corrosion in acidic medium using Allium sativum extracts. Bulletin of Electrochemistry, 21(8): 347 – 352.


P. C. Okafor, E. E. Ebenso and U. J. Ekpe (2004). Inhibition of the acid corrosion of aluminium by some derivatives of thiosemicarbazone. Bulletin of the Chemical Society of Ethiopia, 18(2): 181 – 190.


E. E. Ebenso, P. C. Okafor, U. J. Ekpe, U. J. Ibok and A. I. Onuchukwu (2004). The joint effects of halide ions and methylene blue on the corrosion inhibition of aluminium and mild steel in acid corrodent. Journal of Chemical Society of Nigeria, 29(1): 15 – 25.


P. C. Okafor, E. E. Ebenso, U. J. Ibok, U. J. Ekpe and M. E. Ikpi (2003). Inhibition of 4-acetamidoaniline on corrosion of mild steel in HCl solutions. Transactions of SAEST (Society for Advancement of Electrochemical Science and Technology). 38(3): 91-96.


E. E. Ebenso, P. C. Okafor, U. J. Ekpe (2003). Studies on the inhibition of aluminium corrosion by 2-acetylphenothiazine in chloroacetic acids. Anti-Corrosion Methods and Materials, 50(6): 414 – 421.


E. E. Ebenso, P. C. Okafor, O. E. Offiong, B. I. Ita, U. J. Ibok and U. J. Ekpe (2003). Comparative investigation into the kinetics of corrosion inhibition of aluminium alloy 1060 in acidic medium. Bulletin of Electrochemistry, 17(10): 459 – 464.


U. J. Ekpe, P. C. Okafor, E. E. Ebenso, O. E. Offiong and B. I. Ita (2001). Mutual effects of thiosemicarbazone derivatives on the acidic corrosion of aluminium. Bulletin of Electrochemistry, 17(3): 131 – 135.


I. N. Etim, P. C. Okafor, R. A. Etiuma and C. O. Obadimu, Solar photocatalytic degradation of phenol using Cocos nucifera (coconut) shells as adsorbent. Journal of Chemistry and Biochemistry, 3(1): 35-45.


R. A. Etiuma, O. O. Ekerenam, P. C. Okafor and W. Emori (2015). Comparative Study of two Active Sampling Methods (Phenanthroline and West Gaeke) for Ambient Sulfur (IV) Oxide determination around Calabar City, Nigeria. Journal of Science, Technology


I. N. Etim, R. A. Etiuma, P. C. Okafor and C. O. Obadimu (2015). Degradation of phenol in aqueous system by solar photocatalysis, photolysis and adsorption processes. Journal of Chemical and Process Engineering Research, 34: 56-63.


G. E. Iniama, A. A. Ayi, P. C. Okafor, C. Edem and E. D. Okon (2014). Copper (II) mixed-ligand complexes of 2-acetylpyridine-N(4)-substituted thiosemicarbazones and nitrogen-sulphur monodentate ligands: Synthesis, characterization and antimicrobial activity. International Journal of Applied Chemistry (IJAC), 10(1): 67-76.


P. C. Okafor, P. U. Okon, E. F. Daniel, A. I. Ikeuba and U. J. Ekpe (2013). Adsorption capacity of periwinkle (Tympanotonus fuscatus) shell for lead, copper, cadmium and arsenic from aqueous solutions. Journal of Chemical Society of Nigeria, 38(1): 77-84.


P. C. Okafor, P. U. Okon, E. F. Daniel and E. E. Ebenso (2012). Adsorption capacity of coconut (Cocos nucifera L.) shell for lead, copper, cadmium and arsenic from aqueous solutions. International Journal of Electrochemical Science, 7: 12354 - 12369


I. S. Okure, P. C. Okafor and U. J. Ibok (2010). Adsorption of Cu2 , As3 and Cd2 from aqueous Solution by Eggshell. Global Journal of Pure and Applied Sciences, 16(4): 407-416.


V. N. Osabor, P. C. Okafor, K. A. Ibe and A. A. Ayi (2009). Characterization of Clays in Odukpani, South Eastern Nigeria. African Journal of Pure and Applied Chemistry, 3(5): 079-085.


V. N. Osabor, D. A. Ogar, P. C. Okafor and G. E. Egbung (2009). Profile of the African Bread Fruit (Treculia africana). Pakistan Journal of Nutrition, 8(7): 1005-1008.


V. N. Osabor, G. E. Egbung and P. C. Okafor (2008). Chemical profile of Nypa fruiticans from Cross River Estuary, South Eastern Nigeria. Pakistan Journal of Nutrition, 7(1): 146 - 150.


B. E. Asikong, M. E. Eja, S. M. Udo, C. I. Mboto, I. E. Uwah and P. C. Okafor (2006). Impacts associated with refined petroleum products and effluents at NNPC tank farm environment in Calabar, South-South Niger Delta, Nigeria. African Journal of Environmental Pollution and Health, 5(2): 57 – 64.

No Results for Research Works done

Showing All Conferences Attended

35th Annual International Conference of the Chemical Society Nigeria (CSN) in Owerri, Nigeria
A conference of members of the Chemical Society of Nigeria on recent developments in all areas of Chemistry and related disciplines with emphasis on Chemistry and the 21st century
Start: Monday 17th September, 2012
End: Friday 21st September, 2012
The 4th IMR Symposium on Materials Sciences and Engineering, Shenyang, China
A conference on high temperature corrosion and protection of materials organised by the Institute of Metal Research, Shenyang, China and the Shenyang Science and Technology Bureau, China
Start: Wednesday 24th September, 2008
End: Thursday 25th September, 2008
14th Annual Conference of the Fulbright Alumni Association of Nigeria (FAAN) in Calabar, Nigeria
A conference of members of the Fulbright Alumni Association of Nigeria (FAAN) themed, Nigeria's economy in the 21st century: Lessons from recession and prospects for re-orientation.
Start: Sunday 11th March, 2018
End: Wednesday 14th March, 2018
13th General Conference and 26th General Meeting of The World Academy of Sciences (TWAS) for the advancement of science in developing countries in Vienna, Austria
An annual conference of members and young affiliates of TWAS
Start: Tuesday 17th November, 2015
End: Sunday 22nd November, 2015
7th Annual International Conference of the South Eastern Zone of the Chemical Society Nigeria (ANACHEM 2012) in Anambra State University of Science, Uli, Nigeria
An annual international conference, workshop and exhibition of the South Eastern Zone of the Chemical Society Nigeria themed, The role of Chemistry to national security challenges
Start: Monday 12th November, 2012
End: Thursday 15th November, 2012
NACE International CORROSION 2016 Conference in Vancouver, Canada
The world’s largest corrosion conference and exposition of corrosion engineers, scientists, researchers, technicians, asset owners, inspectors, and other professionals from over 60 countries across the world
Start: Sunday 6th March, 2016
End: Thursday 10th March, 2016
37th Annual International Conference of the Chemical Society of Nigeria (CSN) in Uyo, Nigeria
A conference of members of the Chemical Society of Nigeria on recent developments in all areas of Chemistry and related disciplines themed, A century of Nigeria (1914-2014): contributions, prospects and challenges of Chemistry
Start: Sunday 7th September, 2014
End: Friday 12th September, 2014
Nigeria Regional Chemical Security Awareness Workshop, Port Harcourt Nigeria
A workshop on the awareness of chemical security, management and control in Nigeria sponsored by the United States Department of State.
Start: Wednesday 7th March, 2018
End: Friday 9th March, 2018
No Results for Grants/Awards Received