The Citation Rankings (Highly Cited Researchers) list 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: 1
Reactor Design
Adsorption
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
71,768
32,035
0.446
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Membranes
membrane separations
polymer synthesis
chemical engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
30,067
11,492
0.382
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Biofuel
Water treatment
Environmental Pollution
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,094
14,655
0.729
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Membranes and polymer science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,033
8,559
0.427
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Ionic liquids
natural gas hydrates
membrane distilation CO2 conversion
wastewater treatment
adsorption
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,125
9,491
0.524
* Total Citation Counts Rankings
Ranking Based On Selection: 6
polymeric membranes
self-assembly
hybrid materials
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,811
5,903
0.331
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Membranes
Gas Separations
Water Desalination
Porous Materials
Chemical Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,682
9,812
0.555
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Polymerization
Block Copolymers
Chemical Synthesis
Macromolecular engineering
Functional polymers for biomedical application
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,500
4,012
0.229
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Catalysis
Reaction Engineering
Refining and Petrochemicals
CO2 capture
Renewable energy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,659
8,715
0.523
* Total Citation Counts Rankings
Ranking Based On Selection: 10
Graphene
2D Materials
Membrane separations
sustainable desalination
Research Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,796
9,724
0.616
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,297
9,281
0.607
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Ionic liquids
deep eutectic solvents
green engineering
water and wastewater treatment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,586
8,961
0.614
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Green Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,560
7,413
0.509
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Porous materials
Supercapacitors
Batteries
eCO2RR
Water splitting
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,487
10,770
0.743
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Acoustic Cavitation
Sonochemistry
Liquid Membrane
Advanced Oxidation
Separation Processes
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,573
6,951
0.512
* Total Citation Counts Rankings
Ranking Based On Selection: 16
hydrotreating
hydrodesulfurization
sorption
fuel
CO2 capture
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,295
2,986
0.225
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Environmental Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,357
9,086
0.800
* Total Citation Counts Rankings
Ranking Based On Selection: 18
Chemical Engineering
Energy and Fuels
Waste-to-Energy
Nanomaterials
Pyrolysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,258
9,094
0.808
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Renewable Enenrgy
Catalysis
Adsorption
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,060
4,884
0.442
* Total Citation Counts Rankings
Ranking Based On Selection: 20
chemical engineering
applied thermodynamics
separation technology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,986
6,656
0.606
* Total Citation Counts Rankings
Ranking Based On Selection: 21
separation materials
resource recovery
atmospheric water generation
catalytic membrane
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,876
7,903
0.727
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Chemical Engineering
Thermodynamics
Water
Membranes
Environment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,482
4,986
0.526
* Total Citation Counts Rankings
Ranking Based On Selection: 23
Biochemical Engineering
Biopolymers
nanocomposites
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,973
6,671
0.743
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Electrocoagulation
Electrochemical Disinfection
Environmental Engineering
Green Chemistry
Water Treatment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,940
6,535
0.731
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Complex Fluids
Formulation
Colloids and Surfaces
Wastewater Treatment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,436
6,483
0.768
Bassim H Hameed
Qatar University
Doha, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
71,768
32,035
0.446
Reactor Design
Adsorption
Ingo Pinnau
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
30,067
11,492
0.382
Membranes
membrane separations
polymer synthesis
chemical engineering
Ala A H Al Muhtaseb
Sultan Qaboos University
Muscat, Oman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,094
14,655
0.729
Biofuel
Water treatment
Environmental Pollution
Suzana Nunes
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,033
8,559
0.427
Membranes and polymer science
Majeda Khraisheh
Qatar University
Doha, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,125
9,491
0.524
Ionic liquids
natural gas hydrates
membrane distilation CO2 conversion
wastewater treatment
adsorption
Klaus Viktor Peinemann
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,811
5,903
0.331
polymeric membranes
self-assembly
hybrid materials
Zhiping Lai
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,682
9,812
0.555
Membranes
Gas Separations
Water Desalination
Porous Materials
Chemical Engineering
Yves Gnanou
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,500
4,012
0.229
Polymerization
Block Copolymers
Chemical Synthesis
Macromolecular engineering
Functional polymers for biomedical application
Mohammad M Hossain
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,659
8,715
0.523
Catalysis
Reaction Engineering
Refining and Petrochemicals
CO2 capture
Renewable energy
Hassan Arafat
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,796
9,724
0.616
Graphene
2D Materials
Membrane separations
sustainable desalination
Research Management
Trari Mohamed
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,297
9,281
0.607
Inas Alnashef
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,586
8,961
0.614
Ionic liquids
deep eutectic solvents
green engineering
water and wastewater treatment
Farouq Sabri Mjalli
Sultan Qaboos University
Muscat, Oman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,560
7,413
0.509
Sharath Kandambeth
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,487
10,770
0.743
Porous materials
Supercapacitors
Batteries
eCO2RR
Water splitting
Oualid Hamdaoui
King Saud University
Riyadh, Saudi Arabia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,573
6,951
0.512
Acoustic Cavitation
Sonochemistry
Liquid Membrane
Advanced Oxidation
Separation Processes
Xiaoliang Ma
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,295
2,986
0.225
hydrotreating
hydrodesulfurization
sorption
fuel
CO2 capture
Fares Almomani
Qatar University
Doha, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,357
9,086
0.800
Environmental Engineering
Mohammad Rehan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,258
9,094
0.808
Chemical Engineering
Energy and Fuels
Waste-to-Energy
Nanomaterials
Pyrolysis
Mohammad Ahmad
American University of Beirut
Beirut, Lebanon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,060
4,884
0.442
Renewable Enenrgy
Catalysis
Adsorption
Maaike Kroon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,986
6,656
0.606
chemical engineering
applied thermodynamics
separation technology
Ludovic (Ludo) Dumee
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,876
7,903
0.727
separation materials
resource recovery
atmospheric water generation
catalytic membrane
Naif A Darwish
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,482
4,986
0.526
Chemical Engineering
Thermodynamics
Water
Membranes
Environment
Mazhar Ul-Islam
Dhofar University
Salalah, Oman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,973
6,671
0.743
Biochemical Engineering
Biopolymers
nanocomposites
Djamel Ghernaout
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,940
6,535
0.731
Electrocoagulation
Electrochemical Disinfection
Environmental Engineering
Green Chemistry
Water Treatment
Mustafa Saleh Nasser
Qatar University
Doha, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,436
6,483
0.768
Complex Fluids
Formulation
Colloids and Surfaces
Wastewater Treatment