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OWSD Programmes

January 2008 PhD Fellow

January 2020 Early career Fellowship

Degrees:

2013
Doctorate     Chemical Sciences
We are involved in the synthesis and characterization of novel metal complexes with potential therapeutic, biological applications, and also their use as single molecular precursors to nanoparticles synthesis for potential applications in water treatment and photovoltaics.

Publications resulting from Research
1- Yepseu, A.P.; Girardet, T., Nyamen, L.D.; Fleutot, S.; Ketchemen, K.I.Y.; Cleymand, F.; Ndifon, P.T. Copper (II) Heterocyclic Thiosemicarbazone Complexes as Single-Source Precursors for the Preparation of Cu9S5 Nanoparticles: Application in Photocatalytic Degradation of Methylene Blue, Catalysts, 2022, 12, 61.


2- G.A. Tigwere, Malik D.Khan, L.D. Nyamen, A. A. Aboud, T. Moyo, S.T. Dlamini, P.T. Ndifon, N. Revaprasadu, Molecular precursor route for the phase selective synthesis of α-MnS or metastable γ-MnS nanomaterials for magnetic studies and deposition of thin films by AACVD, Mater. Sci. Semicond. Process., 2022, 139, 106330

3- A.P. Yepseu, L. Issac, L.D. Nyamen, F. Cleymand, A. Duta, P.T. Ndifon, Optical and photocatalytic properties of CuxS/ZnO composites thin films deposited by robotic spray pyrolysis deposition, Journal of nanomaterials, 2021, 1-9

4- K. I. Y. Ketchemen, M. D. Khan, S. Mlowe, M. P. Akerman, I. Vitorica-Yrezabal, G. Whitehead, L.D. Nyamen, P.T. Ndifon, N. Revaprasadu, P. O'Brien; Crystal structures and physicochemical studies of some novel divalent and trivalent transition metal chelates of N-morpholine-N'-benzoylthiourea; J. Mol. Struct., 2021, 1229, 129791

5- K.I.Y. Ketchemen, S. Mlowe, L.D. Nyamen, P.T. Ndifon, N. Revaprasadu; Comparative study on the effect of precursors on the morphology and electronic properties of CdS nanoparticles; Turkish J. Chem., 2021, 45, 400-409

6- W. N. Kun, P. D. McNaughter, L. D. Nyamen, B. F. Spencer, P. O’Brien, P. T. Ndifon, N. Revaprasadu; Synthesis of (Bi1-xSbx)2S3 solid solutions via thermal decomposition of bismuth and antimony piperidine dithiocarbamates; RSC Adv., 2019, 9, 15836 - 15844

7- K. I. Y. Ketchemen, M. D. Khan, S. Mlowe, L. D. Nyamen, P. T. Ndifon, P. O’Brien, N. Revaprasadu. Tailoring Shape and Crystallographic Phase of Copper Sulfide Nanostructures Using Novel Thiourea Complexes as Single Source Precursors. J Inorg Organomet Polym, 2019, 1-11

8- K. I. Y. Ketchemen, Sixberth Mlowe, L. D. Nyamen, Peter T. Ndifon, Neerish Revaprasadu, Paul O’Brien; CdS thin films deposition by AACVD: Effect of precursor type, decomposition temperature and solvent; J. Mater Sci: Mater. Electron., 2018, 29(17), 14462-14470.

9- W. N. Kun, S. Mlowe, L. D. Nyamen, M. P. Akerman, P. O’Brien, P. T. Ndifon and N.Revaprasa, Deposition of Bi2S3 thin films from heterocyclic bismuth(III) dithiocarbamato complexe, Polyhedron 2018, 154, 173

10- K. I. Y. Ketchemen, S. Mlowe, L. D. Nyamen, A. A. Aboud, M. P. Akerman, P. T. Ndifon, P. O’Brien, N. Revaprasadu, Heterocyclic lead(II) thioureato complexes as single-source precursors for the aerosol assisted chemical vapour deposition of PbS thin films, Inorg. Chim. Acta, 2018, 479, 42-48.