Research focus is on the following major areas:
•Development of materials for renewable energy technologies (biodiesel, fuel cells, supercapacitors, Gratzel cells).
•Studies on lignocellulosic materials for possible industrial applications (microcrystalline cellulose, corrosion inhibitors, adsorbents)
Publications (Selected)
1.Menkiti M.C., Ejikeme P.M., Onukwuli O.D., Aneke, M.C., Ugonabo, V.I., Menkiti, N.U. (2015). Adsorptive treatment of brewery waste water using activated carbon prepared from Afzelia africana wood sawdust, J. Chin. Adv. Mater. Soc. DOI: 10.1080/22243682.2015.1017607.
2.Pillay, S., Pillay, J., Ejikeme, P.M., Makgopa, K., Ozoemena, K.I. (2015). Novel Nanostructured Cobalt (II) Tetracarboxyphthalocyanine Complex Supported Within the MWCNT Frameworks: Electron Transport and Charge Storage Capabilities, Electroanalysis, DOI. 10.1002.elan.201500012.
3.Makgopa, K., Ejikeme, P.M., Jafta, C.J., Raju, K., Zeiger, M., Presser, V., Ozoemena, K.I. (2015). High-rate aqueous symmetric pseudocapacitors based on highly graphitized onion-like carbon/birnessite-type manganese oxide nanohybrids, J. Mater. Chem. A, 3, 3480-3490.
4.Ejikeme, P.M., Umana, S.G, Menkiti, M.C., Onukwuli, O.D. (2015). Inhibition of mild steel and aluminium corrosion in 1M H2SO4 by leaves extract of African breadfruit, Int. J. Mater. Chem. 5 (1), 14-23.
5.Ejikeme, P.M., Umana, S.G., Menkiti, M.C., Alinnor, I.J., Onukwuli, O.D. (2014). Corrosion inhibition and adsorption characteristics of Jatropha Curcas leaves extract on aluminium in 1M HCl, Am. J. Mater. Sci. 4(5), 194-201.
6.Menkiti MC, Aneke MC, Ejikeme PM, Onukwuli OD and Menkiti NU (2014). Adsorptive treatment of brewery effluent using activated Chrysophyllum albidium seed shell carbon, SpringerPlus. 3:213 doi:10.1186/2193-1801-3-213.
7.Lateef, F.A., Onukwuli, O.D., Okoro, U.C., Ejikeme, P.M., Jere, P. (2014). Some physical properties and oxidative stability of biodiesel produced from oil seed crops, Korean J. Chem. Eng., 31(5), 725-731.
8.Nwanya, C.A., Jafta, C.J., Ejikeme, P.M., Ugwuoke, P.E., Reddy, M.V., Osuji, R.U., Ozoemena, K.I., Ezema, F.I. (2014). Electrochromic and electrochemical capacitive properties of tungsten oxide and its polyaniline nanocomposite films obtained by chemical bath deposition method, Electrochim. Acta, 128, 218-225.
9.Anyanwu, C. N., Mbajiorgu, C.C., Ibeto, C.N. and Ejikeme, P.M. (2013). Effect of reaction temperature and time on Neem methyl ester yield in a batch reactor, Energy Conversion & Management, 74, 81-87.
10.Ejikeme, P.M., Anyaogu, I.D., Egbuonu, C.A.C. and Eze, V.C. (2013).Pig fat (lard) derivatives as alternative diesel fuel in compression ignition engines, J. Pet. Technol. Alter. Fuels, 4(1), 7-11. DOI:10.5897/JPTAF10.001.
11.Ejikeme, P.M., Umana, S.G. and Onukwuli, O.D. (2012). Corrosion inhibition of aluminium by Treculia Africana leaves extract in acid medium, Portugaliae Electrochimica Acta, 30(5), 317-328. DOI: 10.4152/pea.201205317.
12.Alinnor, I.J. and Ejikeme, P.M. (2012). Corrosion inhibition of aluminium in acidic medium by different extracts of Ocimum gratissimum, Amer. Chem. Sci. J., 2(4), 122-135.
13.Nwanya, A.C., Ugwuoke, P.E., Ejikeme, P.M., Oparaku, O.U. and Ezema, F.I. (2012). Jathropha Curcas and Citrus Aurantium Leaves Dye Extract for Use in Dye Sensitized Solar Cell with TiO2 Films, Int. J. Electrochem. Sci., 7(11), 11219 - 11235.
14.Ageh, J.T., Ejikeme, P.M. and Ibemesi, J.A. (2012). Temperature effects on iodine catalysed dimerization of fluted pumpkin (Telfairia occidentalis) seed oil, Int. J. Phys. Scis., 7(15), 2287–2293. DOI: 10.5897/IJPS11.064.
15.Eze, V.C., Ejikeme, P.M. and Onukwuli, O.D. (2012). Rheological and some fuel properties of fatty acid methyl esters of the oils of palm, palm kernel and groundnut, Adv. Mater. Res., 367, 343-352.
16.Ejikeme, P.M., Okpareke, O.C., Anyaogu, I.D. and Nwogu, C.C. (2011). Adsorptive removal of methylene blue from aqueous solutions with activated carbon from agricultural waste material: Irvingia Gabonensis seed shell, Natural Products - An Indian Journal, 7(3), 91-96.
17.Ejikeme, P.M., Okoye, A.I. and Onukwuli, O.D. (2011). Kinetics and Isotherm Studies of Cu2+ and Pb2+ Ions Removal from Simulated Waste Water by Gambeya Albida Seed Shell Activated Carbon. The African Review of Physics (Formally published as The African Physical Review), 6(0), 143-152.
18.Ukoha, P.O., Egbuonu A.C.C., Obasi N.L. and Ejikeme, P.M. (2011). Tannins and other phytochemical of the Samanaea saman pods and their antimicrobial activities, Afri. J. Pure Appl. Chem. 5(8), 237-244.
19.Ejikeme,P.M. Egbuonu C.A.C. and Anyaogu, I.D. (2011).Fatty Acid Methyl Esters of Melon Seed Oil: Characterization for Potential Fuel Applications, Leonardo J. Sci. 18, 75-84.
20.Nwanya, A.C., Ezema, F.I. and Ejikeme, P.M. (2011). Dyed Sensitized Solar Cells: A Technically and Economically Alternative Concept to p-n Junction Photovoltaic Devices, Int. J. Phys. Scis., 6(22), 5190-5201.
21.Obasi, L.N., Ejikeme, P.M. and Egbuonu, A.C.C. (2011). Antimicrobial and phytochemical activity of methanolic extract and its fractions of Jatropha curcas Linn (Eurphorbiaceae) stem bark. Afri. J. Pure and Appl. Chem., 5(5), 92-96.
22.Obasi, L.N., Egbuonu, A.C.C. Ukoha, P.O. and Ejikeme, P.M. (2010). Comparative phytochemical and antimicrobial screening of some solvent extracts of Samanea saman (Fabaceae or Mimosaceae) pods. Afri. J. Pure and Appl. Chem., 4(9), 206-212.
23.Ejikeme P.M., Anyaogu I.D., Ejikeme, C.L., Nwafor, N.P., Egbuonu, C.A.C., Ukogu K. and Ibemesi, J.A. (2010). Catalysis in Biodiesel Production by Transesterification Processes: An Insight, E-Journal of Chemistry, 7(4), 1120-1132.
24.Okoye, A.I., Ejikeme, P.M. and Onukwuli, O.D., (2010). Lead Removal from Waste Water by Fluted Pumpkin Seed Shell Activated Carbon: Adsorption Modeling and Kinetics, Int. J. Environ. Sci. Tech., 7 (4), 793-800.
25.Anyaogu, I.D., Ejikeme, P.M. and Ibemesi J.A. (2010). Development of Thixotropic Coatings using Dimerized Soybean Oil Fatty Acids: The Case of Polyamide of 1,2-Phenylene Diamine, J. Polym. Environ., 18(2):104–115.
26.Ejikeme, P.M., Obasi, N.L. and Egbuonu, C.A.C. (2010). Physicochemical and Toxicological Studies on Afzelia Africana Seed and Oil, Afri. J. Biotechnol., 9 (13), 1959-1963.
27.Egbuonu, A.C.C.,Obidoa, O., Ezeokonkwo, C.A., Ejikeme, P.M. and Ezeanyika, L.U.S. (2010). Some biochemical effects of sub-acute oral administration of L-arginine on monosodium glutamate-fed Wistar albino rats 1: Body weight changes, serum cholesterol, creatinine, and sodium ion concentrations, Tox. Environ. Chemistry, 92(7), 1331-1337.
28.Ukoha, P.O., Ejikeme, P.M. and Maju, C.C. (2010). Tannins from the Husks of AnacardiumOccidentale and Arachis Hypogea Kernel: Characterisation and Potential Applications, J. Am. Leather Chemists Asso. 105(7), 242-249.
29.Egbuonu, A.C.C., Obidoa, O., Ezeokonkwo, C.A., Ezeanyika, L.U.S. and Ejikeme, P.M. (2009).Low dose oral administration of monosodium glutamate in male albino rats may be nephroprotective, Bioresearch, 7(1), 470–473
30.Egbuonu, A.C.C., Obidoa, O., Ezeokonkwo, C.A., Ezeanyika, L.U.S. and Ejikeme, P. M., (2009). Hepatotoxic Effects of Low Dose Oral Administration of Monosodium Glutamate. In Male Albino Rats, Afri. J. Biotechnol., 8(13), 3031-3031.
31.Ejikeme, P.M. (2008). Investigation of The Physicochemical Properties of Microcrystalline Cellulose From Agricultural Wastes I: Orange Mesocarp, Cellulose, 15, 141-147.
32.Ejikeme, P.M. and Ochonogor, A. E. (2008). Adsorption Kinetics of Basic Violet 1 Removal by Penthaclethra Mycrophylla Woody Pods Activated Carbon. J. Chem. Soc. Nig., 33(1), 132-137.
33.Ejikeme, P.M. (2008). Fuel Properties of the Derivatives of Soybean Oil. J. Chem. Soc. Nig. 33(1), 145-149.
34.Anyaogu, I.D. and Ejikeme, P.M. (2008).Comparative Study on the Use of Bronsted and Lewis Acids as Dextrinization Catalysts for Sorghum Starch 1: HCl and FeCl3, J. Chem. Soc. Nig. 33(1), 83-88
35.Anyaogu, I.D. and Ejikeme, P.M. (2008).Dissolving Pulp from Corn Husk via Peroxyacetic Acid Delignification: The Effects of Process Time and Temperature, J. Chem. Soc. Nig. 33(1), 94-99.
36.Ukoha, P.O., Ejikeme, P.M. and Maju, C.C.(2008). Studies on the Tannins of Breadfruit (Treculia Africana) Husks: Extraction and Characterization, J. Chem. Soc. Nig. 33(1), 152-156.
37.Ejikeme, P.M. and Ibemesi J.A. (2007). New Alkyd Resin Systems from Blends of Melon Seed and Linseed Oils: The Case of Pentaerithritol as Polyhydric Alcohol, J. Chem. Soc. Nig., 32(2), 184 -190.
38.Ejikeme, P.M. (2007).Waste Vegetable Oils as Alternative to Diesel Fuel in Compression Ignition Engines, Book of Proceedings, International Workshop on Renewable Energy for Sustainable Development in Africa, 29th July to 1st August 2007, NCERD, University of Nigeria Nsukka, 166-173.
39.Ochonogor A. E. and Ejikeme, P. M. (2005). Adsorption Potentials of CinnariumSchweinfurthi Nut Shell Activated Carbon, J. Chem. Soc. Nig., 30(2), 91-95.
Conference Papers
1.Ejikeme, P.M., Makgopa K., Ozoemena, K.I. (2014). Pd@MnO2/OLC as an Efficient Nanoelectrocatalyst for Alcohol Fuel Cells in Alkaline Medium, 65th Annual Meeting of the International Society of Electrochemistry, 31st Aug. – 5th Sept 2014, Lausanne Switzerland.
2.Ejikeme, P.M., Makgopa K., Jafta, C.J., Presser, V. Ozoemena, K.I. (2014). Microwave-Assisted Solvothermal Synthesis of Pd-MnO2 Nanocatalysts Supported on Carbon Nano-Onions for the Development of Alkaline Direct Alcohol Fuel Cells, 1st African International Conference on Applications of Nanotechnology to Energy, Health and Environment, 23rd - 19th March 2014, Nsukka-Nigeria.
3.Ejikeme, Paul M., Ibemesi, John A., Giacobbe, Braccio, Egidio, Viola, Vito Valerio, Anyanwu, Cosmas N., Onukwuli, Okechukwu D. (2013). Factorial Design and Response Surface Methodology in Optimization of Biodiesel Production from Nigerian Non-Edible Oil, 13th Topical Meeting of the International Society of Electrochemistry, 7th- 10th April 2013, Pretoria South Africa.
4.Ejikeme, P.M.,Giacobbe, B.,Ibemesi, J.A.,Zimbardi, F.,Lamanna, R.,Egidio, V., Sharma, V., Valerio, V. (2012). Application of experimental design and response surface methodology in biodiesel production from Huracrepitans seed oil, 3rd International Workshop on Renewable Energy for Sustainable Development in Africa, 5th-12th Nov., 2012.Nondon International Hotels Ltd Enugu – Nigeria.
5.Ujam O.T., Devey K., Ejikeme P.M., Henderson W., Nicholson B.K., Mucalo M.R., Decker C., Andy Hor T.S., Travas-Sejdic J., Agbo I.U. (2012). Immobilisation of [Pt2(μ-S)2(PPh3)4] on polymeric supports by sulfide alkylation reactions,Annual Technical Conference/AGM of Polymer Institute of Nigeria, 24-27th Oct, 2012, Best Western Homeville Hotel, Sapele Road, Etete-Benin City, Nigeria.
6.Ujam O.T., Devey K., Ejikeme P.M., Henderson W., Nicholson B.K., Mucalo M.R., Decker C., Andy Hor T.S., Travas-Sejdic J., Agbo I.U. (2012). Immobilisation of [Pt2(μ -S)2(PPh3)4] on polymeric supports by phosphine exchange reactions, Annual Technical Conference/AGM of Polymer Institute of Nigeria, 24-27th Oct, 2012, Best Western Homeville Hotel, Sapele Road, Etete-Benin City, Nigeria.
7.Ejikeme, Paul M., Nwibo, Daniel D., Anyaogu, Daniel I. (2012). Green corrosion inhibitors for mild steel and aluminium in acid media, 35th Annual International Conference, Workshop and Exhibition ofthe Chemical Society of Nigeria, 17th-21st Sept., 2012.Federal University of Technology, Owerri.
8.Ejikeme, Paul M., Ezeorah, Julius C., Nwafor, Peace I. (2012). Extraction, characterization and potential applications of orange seed oil, 35th Annual International Conference, Workshop and Exhibition ofthe Chemical Society of Nigeria, 17th-21st Sept., 2012. Federal University of Technology, Owerri.
9.Ejikeme P.M., Okoye, A.I., Okpareke O.C., Onukwuli O.D. (2012). Adsorption kinetics of Cu(II) and zn(II) ions from aqueous solution using bamboo based activated carbon, 35th Annual International Conference, Workshop and Exhibition of the Chemical Society of Nigeria, 17th-21st Sept., 2012. Federal University of Technology, Owerri.
10.Umana, S.G, Ejikeme, P.M., Onukwuli, O.D. (2010). Inhibitory Effect of Treculia Africana Leave Extract on the Corrosion of Mild Steel and Aluminum in Sulphuric Acid Solution,Nigerian Materials Congress (NIMACON), 23rd- 26th November, 2010, ConferenceHall, Universal Hotel, Enugu-Nigeria.
11.Ejikeme, P.M., Umana, S.G., Onukwuli, O.D. (2010). Corrosion Inhibition and Adsorptive Behaviour of JatrophaCurcas Leave Extracts on Aluminum Corrosion in Hydrochloric Acid, Nigerian Materials Congress (NIMACON), 23rd- 26th November, 2010, ConferenceHall, Universal Hotel, Enugu-Nigeria.
12.Okpareke, O.C., Ejikeme, P.M. (2010). Adsorptive Removal of Methylene Blue with Activated Carbon from IrvingiaGabonensis Seed Shell: A Local Waste Material, 33rdAnnual International Conference of the Chemical Society of Nigeria, Abeokuta – Nigeria, 20th-24th September.
13.Ofoefule, A.U., Afuaku, T, Ejikeme, P.M.,Ibeto, C.N. (2010). Effect of Chemical Treatment and Waste Blending on Biogas Production from Leaf Litter of Kambal (ChlorophoralExcelsa), 33rdAnnual International Conference of the Chemical Society of Nigeria, Abeokuta – Nigeria, 20th-24th September.
14.Okpareke, O.C., Agha, I.I., Ejikeme, P.M. (2009). Removal of Cu(II), Cd (II) and Hg(II) ions from Simulated Wastewater by brachystageaeurycoma Seed Pods: Intraparticulate Diffusivity and Sorption Studies, 32ndAnnual International Conference of the Chemical Society of Nigeria, Bauchi - Nigeria. 20th-25th September.
15.Nwanya, A.C., Ezema,F.I., Osuji,R.U., Ejikeme, P.M. (2009). Dye Sensitized Solar Cell: A Technically and Economically Alternative Concept to P-N Junction Photovoltaic Device, Poster Presentation, 5thInternational Conference of African Materials Research Society (A-MRS) & Nigerian Materials Congress (NIMACON – 2009), Abuja-Nigeria. 18th-20th December.
16.Ezugwu,S.C.,Ezema,F.I.,Asogwa,P.U., Ejikeme, P.M. (2009).Chemical Bath Deposition (Cbd) Of Pva Capped Pbo And PbsNanocrystalline Thin Films For Photovoltaic Application, 32nd (2009) Annual Conference of the Chemical Society of Nigeria, Bauchi.
17.Ageh, J.T.,Ejikeme, P.M., Ibemesi,J.A. (2009). Temperature Effects on Iodine Catalysed Dimerization of Fluted Pumpkin (TelfairiaOccidentalis) Seed Oil, 32nd (2009) Annual Conference of the Chemical Society of Nigeria, Bauchi.
18.Anyaogu, I.D., Ajuka, K., Ejikeme, P.M. (2009). Novel Conducting Polymer from the Flavonoids of Roselle (Hibiscus sabdariffa) Calyx 1: The In-Situ Deposition of Thin Film on Glass Surface, 20th Annual Technical Conference/AGM of the Polymer Institute of Nigeria, Abuja 2009.
19.Ejikeme, P.M., Egbuonu, C.A.C., Anyaogu, I.D. (2008).Fatty Acid Methyl Esters of Melon Seed Oil: Characterization for Potential Fuel Applications. Annual Conference of The Chemical Society of Nigeria, Enugu State Chapter, Book of Abstract p. 13.
20.Ejikeme, P.M.,Anyaogu, I.D., Egbuonu, C.A.C. (2008). Pig Fat (Lard) Derivatives as Alternative Diesel Fuel in Compression Ignition Engines. Annual Conference of The Chemical Society of Nigeria, Enugu State Chapter Book of Abstract p.14.
21.Ejikeme, P.M., Anyaogu I.D., Ejikeme, C.L., Nwafor, N.P., Egbuonu, C.A.C.,Ukogu K. (2008). Catalysis in Biodiesel Production by Transesterification Processes: An Insight. 31st (2008) Annual Conference of the Chemical Society of Nigeria.
22.Anyaogu, I.D., Ejikeme, P.M., Ibemesi, J.A. (2008). Development of Thixotropic Coatings using Dimerized Soybean Oil Fatty Acids: The Case of Polyamide of 1,2-Phenylene Diamine. Book of Abstracts, 31st (2008) Annual International Conference of the Chemical Society of Nigeria.p.75.
23.Ejikeme, P.M. (2007). Waste Vegetable Oils as Alternative to Diesel Fuel in Compression Ignition Engines, Book of Abstract, International Workshop on Renewable Energy for Sustainable Development in Africa, 29th July to 1st August 2007, NCERD, UNN, p. 21.
24.Anyaogu, I.D., Ejikeme, P.M. (2007). Dissolving Pulp from Corn Husk via Peroxyacetic Acid Delignification: The Effects of Process Time and temperature.Book of Abstract, 18th (2007) Annual/Technical Conference of Polymer Institute of Nigeria, p. 27.
25.Ukoha, P.O., Maju, C.C., Ejikeme, P.M. (2006). Tannins from the Husks of AnacardiumOccidentale and Arachis Hypogea Kernel: Characterisation and Potential Applications. Book of Abstracts, 29th (2006) Annual International Conference of the Chemical Society of Nigeria.p.32.
26.Ejikeme, P.M. (2006). The Physicochemical Properties of Microcrystalline Cellulose from Agricultural Wastes 1: OrangeMesocarp. Book of Abstracts, 17th (2006) Annual Technical Conference of the Polymer Institute of Nigeria, p.19
27.Ejikeme, P.M., Anyaogu, I. D. (2006). Oil Spillage: Clean-up with Melon Seed Oil–Poly(Methyl Methacrylate) Thermal Reaction Product. Book of Abstracts, 17th (2006) Annual Technical Conference of the Polymer Institute of Nigeria, p.19.
28.Ukoha, P.O., Ejikeme, P.M., Maju, C.C. (2006). Studies on the Tannins of Breadfruit (Treculia Africana) Husks: Extraction and Characterization. Book of Abstracts, 17th (2006) Annual Technical Conference of the Polymer Institute of Nigeria, p.20.
29.Ejikeme, P.M., Ukoha, P.O., Maju, C.C. (2006).Tannins from Red Onion Skins: Characterization and Adhesive Properties of Its Formaldehyde Resins. Book of Abstracts, 17th (2006) Annual Technical Conference of the Polymer Institute of Nigeria, p.20
30.Ejikeme, P.M. (2005). Fuel Properties of the Derivatives of Soybean Oil. Book of Abstracts, 16th (2005) Annual Technical Conference of the Polymer Institute of Nigeria, p.27
31.Ejikeme, P.M., Anyaogu, I.D. (2005). Development of Oil Coagulant from TelfariaOccidentalis (Fluted Pumpkin) Seed Oil. Book of Abstracts, 16th (2005) Annual Technical Conference of the Polymer Institute of Nigeria, p.28
32.Ochonogor, A.E., Ejikeme, P.M. (2004). Adsorption Kinetics of Basic Violet 1 Removal by PenthaclethraMycrophylla Woody Pods Activated Carbon. Presented at the 27th (2004) Annual International Conference of the Chemical Society of Nigeria.
33.Ejikeme, P.M., Obasi, N.L. (2004). Physicochemical and Toxicological Studies on Afzelia Africana Seed Oil. Book of Abstracts, 15th (2004) Annual Technical Conference of the Polymer Institute of Nigeria, p.27
34.Ochonogor, A.E., Ejikeme, P.M. (2003). Adsorption Potentials of CinnariumSchweinfurthi Nut Shell Activated Carbon.Book of Abstracts, 26th (2003) Annual International Conference of the Chemical Society of Nigeria.
35.Anyaogu, I.D., Ejikeme, P.M. (2002). Exploring the Potentials of Corn Whorl for the Production of Cellulosic Plastics.Book of Abstracts, 13th (2002) Annual Technical Conference of the Polymer Institute of Nigeria, p.9.
36.Ejikeme, P.M., Ibemesi, J.A. (2002). New Alkyd Resin Systems from Blends of Melon Seed and Linseed Oils: The Case of Pentaerithritol as Polyhydric Alcohol. . Book of Abstracts, 13th (2002) Annual Technical Conference of the Polymer Institute of Nigeria, p.7.
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Manuscript Review:
•Bioresource Technology (Elsevier Publishers),
•International Journal of Environmental Science and Technology (Springer Publishers),
•African Journal of Food Science (Academic Journals Publishers),
•Journal of Environmental Chemical Engineering (Elsevier Publishers),
•Solar Energy Journal (Published by Solar Energy Society of Nigeria).
