Total 2,424,675 scientists, country 221, and institutions 24,468 are evaluated in the Productivity Rankings, an exclusive service provided by AD Scientific Index. This ranking measures and highlights the scientific productivity of researchers based on the i10 index (number of publications with at least 10 citations). This system identifies highly productive scientists across disciplines, institutions, and regions, contributing to the development of evidence-based academic policies and effective incentive mechanisms. The rankings include global, regional, and institutional analyses, along with specialized rankings such as Scientists' Last 6 Years' i10 Index and Universities' i10 Index Rankings 2025. With Premium Membership, you can:
- Gain full access to detailed comparisons and advanced analytics,
- Objectively evaluate your academic productivity,
- Make strategic, data-driven decisions to enhance performance.
* Total i10 IndexRankings
Ranking Based On Selection: 1
![Evans Chirwa](https://cdn.adscientificindex.com/pictures/48/97348.jpg)
Cr(VI) reduction
Bioremediation
biosurfactants
photocatalysis
forward osmosis
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
109
80
0.734
* Total i10 IndexRankings
Ranking Based On Selection: 2
![Irene Barnes](/user/assets/images/profile/no-profile-photo.png)
Forest Pathology
mycology
population genetics
fungal taxonomy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
97
79
0.814
* Total i10 IndexRankings
Ranking Based On Selection: 3
![Ignacy Cukrowski](/user/assets/images/profile/no-profile-photo.png)
computational chemistry
electrochemistry
inorganic chemistry
physical chemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
73
21
0.288
* Total i10 IndexRankings
Ranking Based On Selection: 4
![Patricia Forbes](https://cdn.adscientificindex.com/pictures/92/88627.jpg)
analytical environmental chemistry
chromatography
mass spectrometry
biomonitors
fluorescence sensors
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
61
46
0.754
* Total i10 IndexRankings
Ranking Based On Selection: 5
![Simon Lotz](/user/assets/images/profile/no-profile-photo.png)
Chemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
47
2
0.043
* Total i10 IndexRankings
Ranking Based On Selection: 6
![Gerda Fouche](/user/assets/images/profile/no-profile-photo.png)
Chemistry
Natural product
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
35
26
0.743
* Total i10 IndexRankings
Ranking Based On Selection: 7
![Marile Landman](/user/assets/images/profile/no-profile-photo.png)
Organometallic Chemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
34
12
0.353
* Total i10 IndexRankings
Ranking Based On Selection: 8
![Philip Crouse](https://cdn.adscientificindex.com/pictures/06/88894.jpg)
Fluorine-based chemistry
High-temperature materials processing
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
33
16
0.485
* Total i10 IndexRankings
Ranking Based On Selection: 9
![Daniela I. Bezuidenhout](/user/assets/images/profile/no-profile-photo.png)
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
31
13
0.419
* Total i10 IndexRankings
Ranking Based On Selection: 10
![Shankara Gayathri Radhakrishnan|Shankara Gayathri Sankaranarayanan](/user/assets/images/profile/no-profile-photo.png)
CO2 reduction
PEM electrolysis
Solar Cells
Physical Chemistry
Surfaces and Interfaces
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
26
10
0.385
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* Total i10 IndexRankings
Ranking Based On Selection: 11
![Nolwazi Nombona](https://cdn.adscientificindex.com/pictures/c7/95906.jpg)
Nanoscience
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
24
19
0.792
* Total i10 IndexRankings
Ranking Based On Selection: 12
![KY Chan](https://cdn.adscientificindex.com/pictures/94/101258.jpg)
Innovation Management
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
22
14
0.636
* Total i10 IndexRankings
Ranking Based On Selection: 13
![Darren Riley](https://cdn.adscientificindex.com/pictures/c5/106097.jpg)
Flow Chemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
21
19
0.905
* Total i10 IndexRankings
Ranking Based On Selection: 14
![Elizabet M Van Der Merwe (Liezel)](https://cdn.adscientificindex.com/pictures/f0/96827.jpg)
Chemistry
Waste Valorization
Materials Science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
20
18
0.900
* Total i10 IndexRankings
Ranking Based On Selection: 15
![Melanie Rademeyer](/user/assets/images/profile/no-profile-photo.png)
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
20
6
0.300
* Total i10 IndexRankings
Ranking Based On Selection: 16
![Frederick Pieter Malan](https://cdn.adscientificindex.com/pictures/91/4638204.jpg)
Organometallic chemistry
Catalysis
Crystallography
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
12
11
0.917
* Total i10 IndexRankings
Ranking Based On Selection: 17
![Isbé Van Der Westhuizen](/user/assets/images/profile/no-profile-photo.png)
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
8
8
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 18
![Maggi Loubser](https://cdn.adscientificindex.com/pictures/62/5836371.jpg)
Chemistry
Conservation Science
Bronze Sculptures
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
5
0.714
* Total i10 IndexRankings
Ranking Based On Selection: 19
![Madelien Wooding](https://cdn.adscientificindex.com/pictures/78/4637679.jpg)
Chromatography
mass spectrometry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
3
0.600
Evans Chirwa
University of Pretoria
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
109
80
0.734
Cr(VI) reduction
Bioremediation
biosurfactants
photocatalysis
forward osmosis
Irene Barnes
University of Pretoria
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
97
79
0.814
Forest Pathology
mycology
population genetics
fungal taxonomy
Ignacy Cukrowski
University of Pretoria
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
73
21
0.288
computational chemistry
electrochemistry
inorganic chemistry
physical chemistry
Patricia Forbes
University of Pretoria
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
61
46
0.754
analytical environmental chemistry
chromatography
mass spectrometry
biomonitors
fluorescence sensors
Simon Lotz
University of Pretoria
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
47
2
0.043
Gerda Fouche
University of Pretoria
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
35
26
0.743
Marile Landman
University of Pretoria
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
34
12
0.353
Philip Crouse
University of Pretoria
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
33
16
0.485
Fluorine-based chemistry
High-temperature materials processing
Daniela I. Bezuidenhout
University of Pretoria
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
31
13
0.419
Shankara Gayathri Radhakrishnan|Shankara Gayathri Sankaranarayanan
University of Pretoria
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
26
10
0.385
CO2 reduction
PEM electrolysis
Solar Cells
Physical Chemistry
Surfaces and Interfaces
Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast!
Nolwazi Nombona
University of Pretoria
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
24
19
0.792
KY Chan
University of Pretoria
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
22
14
0.636
Darren Riley
University of Pretoria
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
21
19
0.905
Elizabet M Van Der Merwe (Liezel)
University of Pretoria
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
20
18
0.900
Chemistry
Waste Valorization
Materials Science
Melanie Rademeyer
University of Pretoria
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
20
6
0.300
Frederick Pieter Malan
University of Pretoria
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
12
11
0.917
Organometallic chemistry
Catalysis
Crystallography
Isbé Van Der Westhuizen
University of Pretoria
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
8
8
1.000
Maggi Loubser
University of Pretoria
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
5
0.714
Chemistry
Conservation Science
Bronze Sculptures
Madelien Wooding
University of Pretoria
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
3
0.600