Thumbnail Image
Prof 

Revaprasadu, Neerish

Faculty: Faculty of Science, Agriculture and Engineering
Department: Chemistry
ORCID: https://orcid.org/0000-0001-5730-1232
Research Interest(s): Nanotechnology, Nanomaterials, Electrocatalysis.
Active Research Project(s): NRF/SASOL NIMPO Incentive Grant
Active Community Engagement: ASSAF, RSC, and SACI
Biography: Neerish Revaprasadu is a Senior Professor of Chemistry and former SARChI Chair holder in Nanotechnology at the University of Zululand, South Africa. He obtained my B.Sc. (Hons.) from the University of Natal in 1993 and his PhD from Imperial College, London in 2000. He started as a Senior Lecturer at UNIZULLU in 2000 promoted to Associate Professor in 2004, and full Professor in 2009. In 2007, I was awarded the DST/NRF SARCHi research chair in Nanotechnology. He has taught undergraduate and postgraduate courses. These include General Chemistry (1st year), Analytical Chemistry (2nd, 3rd and Hons), Inorganic Chemistry (3rd year and Hons), and has supervised 15 postdocs, 20 PhD, and 16 MSc students. Professor Revaprasadu has published 240 articles in peer-reviewed journals, 25 book chapters, and attended 80 national and international conferences. He has been the editor of the SPR Nanoscience book series (Vol. 4-7) published by the Royal Society of Chemistry since 2016, and also the associate editor of the Nanoscience and Nanotechnology RSC book series. He was elected a Member of the South African Academy of Science (ASSAF) in 2014.
Views

8684

Downloads

1

Your Rating
N/A
Avg. Rating
0/5
( 0 Reviews )
Rating Breakup
1
0
2
0
3
0
4
0
5
0

Rating this item

FacebookXWhatsAppLinkedIn

More Detail

20221
Author: Ndifon, Peter T. × Subject: 2,2-Bipyridyl ×
Reset filters

Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    PublicationJournal Article
    FacebookXWhatsAppLinkedIn
    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
    2022
     | Elsevier
    Heterocyclic dithiocarbamate complex of manganese and the adducts of the complex with 1,10-phenanthroline and 2,2-bipyridyl respectively were synthesized and characterized. The complexes were used as single-source precursors for the preparation of MnS nanoparticles via thermolysis in oleylamine (OLA) and dodecanethiol (DT). The optimized reaction parameters have resulted in the formation of α-MnS and γ-MnS nanoparticles depending on the dispersion medium and the nature of the precursor. The same precursors were also used for the deposition of MnS thin films by the aerosol-assisted chemical vapour deposition (AACVD) method in varying solvents and temperatures. The morphology and phase of the synthesized nanoparticles were shown to be affected by the precursor type and the nature of the surfactants. TEM images show the formation of nanoparticles of various morphologies ranging from spherical monodispersed to large elongated pointed rods, depending on the precursor type. SEM images showed that the morphology of the deposited thin films is affected by precursor type and the deposition temperature. Worm-like to rod-like films were observed on TEM images at 350 ◦C, which changes to spherical or cubic films at 450 ◦C. Magnetic measurements at room temperature showed the α-MnS and γ-MnS nanoparticles in paramagnetic states due to Mn2+moments. The susceptibility for the γ-phase is at least double that of the α-phase. Finite and small hysteretic effects in low fields are indicative of small ordered antiferromagnetic phases due to negative exchange interaction between Mn2+ions.
    • 1
    • 4
    • 0