Citation Rankings
Highly Cited Researchers
University of the Witwatersrand Highly Cited Researchers CitationNatural Sciences / Chemical Sciences Rankings 2025
The Citation Rankings (Highly Cited Researchers) highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.
* Total Citation Counts Rankings
Ranking Based On Selection :26
Nanoscience
Analytical chemistry
Inorganic chemistry
Water treatment
Membrane technology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
181
171
0.945
* Total Citation Counts Rankings
Ranking Based On Selection :27
Natural products
Organic synthesis and green chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
167
154
0.922
* Total Citation Counts Rankings
Ranking Based On Selection :28
Chemical Thermodynamics
Separation Technology
Gas hydrates
Phase equilibria
Low-High P-T VLE Studies
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
135
129
0.956
* Total Citation Counts Rankings
Ranking Based On Selection :29
Bioinorganic chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
113
46
0.407
* Total Citation Counts Rankings
Ranking Based On Selection :30
Environmental Analytical Chemistry
Chemistry Education
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
111
99
0.892
* Total Citation Counts Rankings
Ranking Based On Selection :31
Environmental Analytical Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
83
83
1.000
* Total Citation Counts Rankings
Ranking Based On Selection :32
Organic synthesis
photochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
63
63
1.000
* Total Citation Counts Rankings
Ranking Based On Selection :33
Organometallic chemistry
Homogeneous catalysis
Catalyst design
CO2 conversion
LOHC's
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
57
56
0.982
* Total Citation Counts Rankings
Ranking Based On Selection :34
Research and Innovation management
physical chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
54
16
0.296
* Total Citation Counts Rankings
Ranking Based On Selection :35
Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
51
51
1.000
* Total Citation Counts Rankings
Ranking Based On Selection :36
Green Chemistry
Biocatalysis
TB
Cancer
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
39
38
0.974
* Total Citation Counts Rankings
Ranking Based On Selection :37
Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23
11
0.478
* Total Citation Counts Rankings
Ranking Based On Selection :38
Biophysics
Bioinorganic chemistry
inorganic chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14
14
1.000
* Total Citation Counts Rankings
Ranking Based On Selection :39
Organic Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2
2
1.000
* Total Citation Counts Rankings
Ranking Based On Selection :40
Environmental Analytical Chemistry
Moringa
Biostimulants
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1
1
1.000
* Total Citation Counts Rankings
Rankings
1,337,223
8,572
821
Ranking Based On Selection: 26
Obakeng Nchoe
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
181
171
0.945
Nanoscience
Analytical chemistry
Inorganic chemistry
Water treatment
Membrane technology
* Total Citation Counts Rankings
Rankings
1,371,755
8,872
861
Ranking Based On Selection: 27
Kennedy J Ngwira
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
167
154
0.922
Natural products
Organic synthesis and green chemistry
* Total Citation Counts Rankings
Rankings
1,462,560
9,704
942
Ranking Based On Selection: 28
Nkululeko Nkosi
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
135
129
0.956
Chemical Thermodynamics
Separation Technology
Gas hydrates
Phase equilibria
Low-High P-T VLE Studies
* Total Citation Counts Rankings
Rankings
1,538,160
10,391
1,012
Ranking Based On Selection: 29
Sadhna Mathura
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
113
46
0.407
* Total Citation Counts Rankings
Rankings
1,543,958
10,438
1,017
Ranking Based On Selection: 30
Sinegugu Khulu
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
111
99
0.892
Environmental Analytical Chemistry
Chemistry Education
* Total Citation Counts Rankings
Rankings
1,656,820
11,426
1,108
Ranking Based On Selection: 31
Shaeen Chetty
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
83
83
1.000
Environmental Analytical Chemistry
* Total Citation Counts Rankings
Rankings
1,754,548
12,305
1,192
Ranking Based On Selection: 32
Songeziwe Ntsimango
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
63
63
1.000
* Total Citation Counts Rankings
Rankings
1,788,772
12,642
1,226
Ranking Based On Selection: 33
Cassiem Joseph|C Joseph, Moegamat Cassiem Joseph, MC Joseph
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
57
56
0.982
Organometallic chemistry
Homogeneous catalysis
Catalyst design
CO2 conversion
LOHC's
* Total Citation Counts Rankings
Rankings
1,809,991
12,873
1,245
Ranking Based On Selection: 34
Robin Drennan
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
54
16
0.296
Research and Innovation management
physical chemistry
* Total Citation Counts Rankings
Rankings
1,824,079
13,002
1,258
Ranking Based On Selection: 35
Xikhongelo Valentia Rikhotso
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
51
51
1.000
* Total Citation Counts Rankings
Rankings
1,905,680
13,815
1,327
Ranking Based On Selection: 36
Mudzuli Maphupha
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
39
38
0.974
Green Chemistry
Biocatalysis
TB
Cancer
* Total Citation Counts Rankings
Rankings
2,047,147
15,198
1,442
Ranking Based On Selection: 37
Monika Nowakowska
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23
11
0.478
* Total Citation Counts Rankings
Rankings
2,142,643
16,203
1,515
Ranking Based On Selection: 38
Sheldon Sookai
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14
14
1.000
Biophysics
Bioinorganic chemistry
inorganic chemistry
* Total Citation Counts Rankings
Rankings
2,341,625
18,444
1,739
Ranking Based On Selection: 39
Tebogo Moswetsa
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2
2
1.000
* Total Citation Counts Rankings
Rankings
2,366,893
18,759
1,769
Ranking Based On Selection: 40
Boitumelo Setati
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1
1
1.000
Environmental Analytical Chemistry
Moringa
Biostimulants