Prof. Ayi Anyama Ayi
DepartmentPure and Applied Chemistry
DesignationProfessor
EmailAbout Prof. Ayi Anyama Ayi
Ayi Anyama Ayi received his B.Sc. and Ph.D. degrees in 1995 and 2002, respectively from the University of Calabar. He was a TWAS South-South Visiting Scholar in 2000, & a TWAS Postdoctoral Fellow (2003-2004) at Jawarhalal Nehru Centre for Advanced Scientific Research (JNCASR), Bangalore, India, under Prof. C. N. R. Rao. As a man of considerable drive and resourcefulness, Ayi has demonstrated immense capacity for independent academic work, which has won him more professional accomplishments as recipient of (i) DAAD Research Fellowship (May- July, 2009), with Prof. Andreas Taubert at Potsdam University/Max Planck Institute of Colloid and Surface Chemistry, Golm, Germany, (ii) Commonwealth Academic Fellowship (2009 - 2010) with Prof. Andrew Burrows at University of Bath, Claverton Down, BA 2 7AY, UK, & (iii) Fulbright African Research Fellowship (2010 -2011), with Prof. Abraham Clearfield at Texas A & M University, College Station, Texas, USA. Ayi, A. A., has designed and isolated various novel open-framework materials such as metal-organophosphonate frameworks, open-framework metal phosphates, selenates and sulfates and acetate-phosphate dimmers for possible applications in separation chemistry, catalysis and adsorption studies. He unraveled the formation mechanism of various open-framework metal phosphates, by isolating a zero-dimensional monomer and successfully transforming it to a one-, two- and three-dimensional network structure. He is an author of a chemistry text titled Understanding Inorganic Chemistry through Problems and Solutions. He was the acting Head of the Department of Pure and Applied Chemistry, University of Calabar, Nigeria (March 2013- February, 2015) and during his sabbatical leave with Federal University Lafia, he was appointed Acting Head of the Department of Chemistry (September 17, 2015 – August 31, 2016). Currently, Professor Ayi is the Dean of the Faculty of Physical Sciences and Director of Inorganic Materials Research Laboratory. His interest is in the development of syntheses, structures and properties of Metal-Organic Framework Materials (MOFs). He is also working on nanomaterials syntheses using ionic liquids/ plant extracts and evaluation of their antimicrobial activities. He is a recipient of TWAS Research Grant (2013 -2015), & RSC Personal Research Grant (2014 -2015). He is a member of many professional bodies and Editorial boards.
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| Anyama, C.A., Ashishie, P.B., Inah, B.E., Mbonu, I.J., & Ayi, A. A. (2019). Metal-Organic Frameworks as Precursor for Metal Oxide Nanostructures Part 1: MOF-Derived Copper Oxide Embedded Carbon Matrix, Adv. J. Chem. A, 2(3), 234-244 | |
| John, W.E., Ayi, A.A., Anyama, C.A., Ashishie, P.B., & Inah, B. E. (2019). On the use of methylimidazolium acetate ionic liquids as solvent and stabilizer in the synthesis of cobalt nanoparticles by chemical reduction method. Advanced Journal of Chemistry- Section A, 2(2), 175-183. | |
| Ashishie, P.B., Anyama, C.A., Ayi, A.A., Oseghale, C.O., Adesuji, E.T., & Labulo, A.H. (2018). Green synthesis of silver monometallic and copper-silver bimetallic nanoparticles using Kigelia africana fruit extract and evaluation of their antimicrobial activities. International Journal of Physical Sciences, 13(3), 24-32, DOI: 10.5897/IJPS2017.4689 | |
| Ephraim, E. K., Anyama, C.A., Ayi, A. A., & Onwuka, J.C. (2018). Use of Nanostructured Layered Double Hydroxides as Nanofilters in the Removal of Fe2+ and Ca2+ Ions from Oil Wells. Advances in Materials Science and Engineering, 1-7, https://doi.org/10.1155/2018/5306825 | |
| Inah, B. E., Ayi, A. A., & Adhikary, A. (2017). Crystal structure of a chloride-bridged copper(II) dimer: piperazine-1,4-dium bis(di-μ-chlorido-bis[(4-carboxypyridine2-carboxylato-κ2 N , O 2) chloridocuprate(II)] Acta Cryst. E73, 246–249. | |
| Adalikwu, S.A., Ofï¬ong, O. E., & Ayi, A. A. (2017). Solvent-Mediated SynthesisofM(II)-Coordination Polymer Part 1: Crystal Structure of Poly(1,2-di(4-pyridyl)ethylene-k2N,N')bis(1,4-benzenediacetato-k4O,O',O'',O''')zinc(II)], C22H18ZnN2O4. Molbank, M952; 1-6. doi:10.3390/M952 | |
| Khansi, E.E., Anyama, C.A., Ayi, A.A., & Onwuka, J.C. (2016). Synthesis and characterization of layered double hydroxide nanostructures and their application in the removal of Fe2+ and Ca2+ ions from oil wells. Acta Scientiae et Intellectus, 2(5), 34-45. | |
| Ayi, A.A., Umoh, A. J., Anyama, C.A., Etuk, S.S., & Ogar, J. O. (2015). Synthesis, Spectral Characterization and Anti-Microbal Activity of Silver Nanoparticles in 1-Alkyl–3-Methylimidazolium Methanesulfonate Ionic Liquids. International Journal of Innovative Research in Science & Engineering, 3(5), 222 | |
| Anyama, C.A., Iniama, G.E., Ogar, J.O., & Ayi, A. A. (2015). Hydrothermal synthesis and structural characterization of an organically-templated open-framework trimolybdates. International Journal of Physical Sciences, 10(19), 543-548 | |
| Ayi, A.A., Anyama, C.A., Khare, V. (2015). On the chemical synthesis of molybdenum nanoparticles under reducing conditions in ionic liquids. Journal of Materials, 2015, 1-7. | |
| Ayi, A. A., Anyama, C.A., & Etuk, S.S., (2014). Synthesis and Characterization of ZrO2 nanoparticles in ionic liquid 1-ethyl-3-methylimidazodium trifluoromethanesulfonate [EmimTfO], Journal of Applied Chemistry, 2(1), 26-32 | |
| Etuk, S. S., Atai, J. G., & Ayi, A. A. (2014), Hydrothermal Synthesis and Characterisation of Bis(4-Hydroxybenzaldehyde)-P-Phenylenediamine Zinc(II) Phosphate, Global Journal of Pure and Applied Sciences, 20, 17-24. | |
| Atai, J. G., Etuk, S. S., & Ayi. A. A. (2014), Hydrothermal Synthesis and Characterisation of Amine-Templated Metal Phosphate Framework. Global Journal of Pure and Applied Sciences, 20, 31-37. | |
| Iniama, G.E., Ayi, A. A., Okafor, P.C., Edem, C.A., & Duke, E.E.O. (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, 10, 67-76. | |
| Ayi, A.A., Kinnibrugh, T. L., & Clearfield, A. (2014). Hydrothermal Synthesis and Structural Characterization of Ammonium ion-Templated Lanthanide(III) Carboxylate-Phosphonates. Frontiers in Chemistry, 2, 94 | |
| Ayi, A.A., Burrows, A.D., Mahon, M.F., & Sebestyen, V.M. (2013) , A molybdenum diphosphonate network structure exhibiting reversible dehydration and selective uptake of methanol. CrystEngComm, 15, 9301-9303, DOI: 10.1039/C3CE40484F. | |
| Kinnibrugh, T.L., Ayi, A.A., Bahmotov, V., & Clearfield, A. (2013). Probing Structural Changes in a Phosphonate-based MOF Exhibiting Reversible Dehydration. Crystal Growth & Design, 13(7), 2973-2981. | |
| Ayi, A.A., Burrows, A. D., Mahon, M.F., & Warren, A.J. (2013). trans-[PtCl2(NH2C6H4CO2H)2]: a platinum complex forming a two- dimensional hydrogen-bonded network. International Journal of Physical Sciences, 8(30), 1546-1550. | |
| Ayi, A.A., Kinnibrugh, T.l., & Clearfield, A. (2011). Linear chain aluminum(III) carboxymethylphosphonate with encapsulated ammonium ions. Dalton Trans, 40(47), 12648-12650. | |
| Ayi, A.A., Burrows, A.D., Mahon, M.F., & Pop, V.M. (2011). Sodium Trihydrogen-1,4-Benzenediphosphonate: An Extended Coordination Network. J Chem Crystallogr, 41, 1165–1168. | |
| Khare, V., Li, Z., Mantion, A., Ayi, A.A., Sonkaria, S., Voelkl, A., & Th€unemann, A., & Taubert, A. (2010). Strong anion effects on gold nanoparticle formation in ionic liquids. Journal of Materials Chemistry, 20, 1332-1339. | |
| Ayi A. Ayi, Khare, V., Strauch, P., Girard, J., Fromm, K.M., & Taubert, A. (2010). On the chemical synthesis of titanium nanoparticles from ionic liquids. Monatshefte fur Chemie- Chemical Monthly, 141, 1273–1278 | |
| Ayi, A. A., & Inah, B. (2010). Synthesis and Characterization of Neodymium selenate-selenite Journal of Ultra Chemistry, 6, 161-170 | |
| Iniama, G. E., Offiong, O. E., & Ayi, A. A. (2009). Synthesis, characterization and antimicrobial activity of copper (II) and Zinc (II) mixed ligand complexes of 2-acetylpyridine thiosemicabarzones and nitrogen, sulphur monodentate ligands. International Journal of Chemistry, 1 41-46. | |
| Ayi, A.A., Uwah, I. E., & Offiong, O. E. (2009). Linear Chain Lanthanum sulphate obtained by the reaction of La3+ ions with diethylenetriamine sulphate. Journal of Ultra Chemistry, 5, 13-20. | |
| Ayi, A. A. (2008). Organically templated open-framework chlorophosphates obtained by amine-phosphate route. International journal of chemical sciences, 1, 230-236. | |
| Iniama, G. E., Offiong, O. E., Nfor, E., & Ayi, A.A. (2008). Mixed-ligand complexes of nickel(II) with 2-acetylpyridine thiosemicarbazone and some N/S monodentate ligands: Synthesis, Structural Characterization and Biological Activity. Global Journal of Pure and Applied Sciences, 4, 411-415. | |
| Ayi, A. A., & Offiong, O. E. (2008). X-ray studies, Spectral Characterization and Thermal behaviour of a two dimensional Zinc phosphate templated by tris(2-aminoethyl)amine [C6H21N4][Zn6(PO4)3(HPO4)3].H2O. Global Journal of Pure and Applied Sciences, 14, 389-396. | |
| Ayi, A.A., Uwa, I. E., & Iniama, G. E. (2007). Synthesis, spectral characterization and thermal properties of triethylenetetraammonium selenate monohydrate; a possible intermediate in the synthesis of open-framework metal selenates. Journal of Ultra Scientists for physical sciences, 19, 473-482 | |
| Ayi, A. A. (2007). X-ray studies, vibrational spectra and thermal behaviour of linear chain aluminophosphate [C6H21N4][Al2(PO4)].5H2O and its transformation product [C6H21N4][Al3(PO4)]4. Journal of Research in Physical Science, 3, 86-95. | |
| Ayi, A. A. (2006). A hybrid open-framework structure: Hydrothermal synthesis and characterization of zinc(II) ethylacetoacetate phosphate. Int. J. of Pure and Applied Sciences, 1, 69-71.1 | |
| Ayi, A.A., Offiong, O. E., Ebri, U. E., & Iniama, G.E. (2005). Hydrothermal synthesis and structural characterization of dimethylamine-templated aluminophosphate. Journal of Chemical Society of Nigeria, 30, 36-39. | |
| Ayi, A.A., Offiong, O. E., & Onuchukwu, A. I. (2005). Hydrothermal synthesis, structural characterization and chemical reactivity of zero-dimensional monomeric metal phosphate. Journal of Chemical Society of Nigeira, 30, 40-44. | |
| Ayi, A. A., & Offiong, O. E. (2005). Synthesis and Structural characterization of a three-dimensional zinc phosphate templated by tris(2-aminoethyl)amine. Journal Chemical Soc. of Nigeria, 30, 45-49 | |
| Ayi, A.A., Choudhury A., & Rao, C.N.R. (2005). A versatile route to hybrid open-framework materials. Global J. Pure and Applied Sciences, 11, 532-534. | |
| Behera, J.N., Ayi, A. A., & Rao, C.N.R. (2004). The first organically templated open-framework metal selenate with a three-dimensional architecture. Chemical Communication, 968-969 | |
| Ayi, A.A., Offiong, O. E., & Akinchan, N. T. (2002). Recent trends in open-framework solids. Journal of Chemical Society of Nigeria, 27, 52-60. | |
| Ayi, A.A., Choudhury, A., Natarajan, S., & Rao, C.N.R. (2001). Cyclic acetate dimmers formed by C-H…O hydrogen bonds in an open-framework zinc phosphate-acetate. New Journal of Chemistry, 25, 213-215. | |
| Ayi, A.A., Choudhury, A., Natarajan, S., Neeraj, S., & Rao, C.N.R. (2001). Transformation of low-dimensional zinc phosphates to complex open-framework structure. Part I: Zero-dimensional to one-, two-, & three-dimensional structures. Journal of Materials Chemistry, 11, 1181-1191. | |
| Ayi, A.A., Choudhury, A., Natarajan, S., & Rao, C.N.R. (2001). One-dimensional zinc phosphates with linear chain structure. Journal of Physics and Chemistry of Solids, 62, 1481-1491. | |
| Rao, C.N.R., Natarajan, A., Choudhury, A., Neeraj, S., & Ayi, A.A. (2001). Aufbau principle of complex open-framework structures of metal phosphates with different dimensionalities. Accounts of Chemical Research, 34, 80-87. | |
| Ayi, A.A., Choudhury, A., Natarajan, S., & Rao, C.N.R. (2000). Solution-mediated synthesis of a three-dimensional zinc phosphate in the presence of a monoamine. Journal of Materials Chemistry, 10, 2606-2608. | |
| Ayi, A. A., Choudhury, A., & Natarajan, S. (2000). Linear chain AlPOs obtained by the reaction of amine phosphates with Al3+ ions. Journal of Solid state Chemistry, 156, 185-195. | |
| Offiong, E. O., Nfor, E., Ayi, A.A., & Martelli, S. (2000). Synthesis spectral and cytotoxicity studies of Palladium (II) and Platinum (II) amino acid Schiff base complexes. Transition Metal Chemistry, 25, 369-373. |
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