Ahmad Umar
Impact in
-
- Advanced Photocatalysis Techniques
- TiO2 Photocatalysis and Solar Cells
- Materials Chemistry top 0.1%
- ZnO doping and properties
- Nanoparticles: synthesis and applications
Papers in
-
- Advanced Photocatalysis Techniques 94
- TiO2 Photocatalysis and Solar Cells 51
-
- ZnO doping and properties 128
- Nanoparticles: synthesis and applications 26
- Co-authors
- Yoon‐Bong Hahn (65 shared papers)Rajesh Kumar (70 shared papers)Sushil Kumar Kansal (50 shared papers)Surinder Kumar Mehta (56 shared papers)Sotirios Baskoutas (124 shared papers)Ahmed A. Ibrahim (139 shared papers)Girish Kumar (9 shared papers)Mohammed Mahabubur Rahman (13 shared papers)
- Journals
- Journal of Nanoscience and Nanotechnology (85 papers)Science of Advanced Materials (70 papers)Ceramics International (38 papers)Journal of Alloys and Compounds (27 papers)Journal of Nanoelectronics and Optoelectronics (24 papers)
- Partner nations
- Saudi ArabiaIndiaUnited States
In The Last Decade
Ahmad Umar
821 papers receiving 32.7k citations
Ahmad Umar's Hit Papers
Peers
Comparison fields: 5 of 148
- Renewable Energy, Sustainability and the Environment 6.7k
- Materials Chemistry 9.2k
- Water Science and Technology 2.7k
- Electrical and Electronic Engineering 9.1k
- Electronic, Optical and Magnetic Materials 2.4k
Countries citing papers authored by Ahmad Umar
This map shows the geographic impact of Ahmad Umar's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ahmad Umar with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ahmad Umar more than expected).
Fields of papers citing papers by Ahmad Umar
This network shows the impact of papers produced by Ahmad Umar. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ahmad Umar. The network helps show where Ahmad Umar may publish in the future.
Co-authors
The 25 scholars most cited alongside Ahmad Umar, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.
All Works
Showing the 20 most-cited of 836 papers — load more, or switch the sort, to bring in the rest.
| # | Work | ||
|---|---|---|---|
| 1 | Zinc Oxide Nanostructures for NO2 Gas–Sensor Applications: A Review Hit paper breakdown → | 2014 | 775 |
| 2 | Hierarchical porous carbon aerogel derived from bagasse for high performance supercapacitor electrode Hit paper breakdown → | 2014 | 594 |
| 3 | Biomass-derived nitrogen-doped carbon quantum dots: highly selective fluorescent probe for detecting Fe3+ ions and tetracyclines Hit paper breakdown → | 2018 | 584 |
| 4 | Antimicrobial properties of ZnO nanomaterials: A review Hit paper breakdown → | 2016 | 507 |
| 5 | Hierarchical SnO2 Nanostructures Made of Intermingled Ultrathin Nanosheets for Environmental Remediation, Smart Gas Sensor, and Supercapacitor Applications Hit paper breakdown → | 2014 | 485 |
| 6 | Zinc oxide nanonail based chemical sensor for hydrazine detection Hit paper breakdown → | 2007 | 476 |
| 7 | 2015 | 305 | |
| 8 | Nanomaterials-based biosensor and their applications: A review Hit paper breakdown → | 2023 | 305 |
| 9 | 2019 | 260 | |
| 10 | 2018 | 251 | |
| 11 | 2013 | 245 | |
| 12 | 2017 | 245 | |
| 13 | Metal Oxide Nanostructures and Their Applications | 2009 | 242 |
| 14 | 2007 | 241 | |
| 15 | 2013 | 233 | |
| 16 | 2018 | 225 | |
| 17 | 2008 | 217 | |
| 18 | 2014 | 217 | |
| 19 | 2006 | 213 | |
| 20 | 2016 | 212 |
About Ahmad Umar
Ahmad Umar is a scholar working on Renewable Energy, Sustainability and the Environment, Materials Chemistry, Electrical and Electronic Engineering, Water Science and Technology and Electronic, Optical and Magnetic Materials, having authored 836 papers that have together received 33.3k indexed citations. Recurring topics across this work include ZnO doping and properties (128 papers), Electrochemical sensors and biosensors (113 papers), Gas Sensing Nanomaterials and Sensors (103 papers), Advanced Photocatalysis Techniques (94 papers), TiO2 Photocatalysis and Solar Cells (51 papers), Supercapacitor Materials and Fabrication (39 papers), Adsorption and biosorption for pollutant removal (36 papers) and Nanoparticles: synthesis and applications (26 papers). The work is most often cited by research in Renewable Energy, Sustainability and the Environment (6.7k citations), Materials Chemistry (9.2k citations), Water Science and Technology (2.7k citations), Electrical and Electronic Engineering (9.1k citations) and Electronic, Optical and Magnetic Materials (2.4k citations). Ahmad Umar has collaborated with scholars based in Saudi Arabia, India and United States. Frequent co-authors include Yoon‐Bong Hahn, Rajesh Kumar, Sushil Kumar Kansal, Surinder Kumar Mehta, Sotirios Baskoutas, Ahmed A. Ibrahim, Girish Kumar, Mohammed Mahabubur Rahman, Savita Chaudhary and A. Al‐Hajry. Their work appears in journals such as Journal of Nanoscience and Nanotechnology, Science of Advanced Materials, Ceramics International, Journal of Alloys and Compounds and Journal of Nanoelectronics and Optoelectronics.
Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.