Ajay Kumar

6.5k citations

100 papers · 5.2k indexed · 3 hit papers · h-index 40

Impact in

Renewable Energy, Sustainability and the Environment top 0.5%
- Advanced Photocatalysis Techniques
- TiO2 Photocatalysis and Solar Cells
Materials Chemistry top 1%
- Advanced Nanomaterials in Catalysis
- Copper-based nanomaterials and applications
- Covalent Organic Framework Applications

Papers in ⓘ

Materials Chemistry 42
Renewable Energy, Sustainability and the Environment 35
- Advanced Photocatalysis Techniques 33

Co-authors: Venkata Krishnan (39 shared papers)Ashish Kumar (17 shared papers)Suneel Kumar (10 shared papers)Priyanka Choudhary (10 shared papers)Ashish Bahuguna (6 shared papers)Pedro H. C. Camargo (1 shared paper)Vipul Sharma (5 shared papers)R. Mohan Sankaran (7 shared papers)
Journals: Materials Chemistry Frontiers (4 papers)ACS Applied Energy Materials (3 papers)Chemosphere (3 papers)Materials Today Sustainability (2 papers)The Journal of Physical Chemistry C (2 papers)
Partner nations: India United States United Kingdom

In The Last Decade

Ajay Kumar

96 papers receiving 5.1k citations

Hit Papers

align trajectories log scale

Advanced activation of persulfate by polymeric g-C3N4 based photocatalysts for environmental remediation: A review 2021 · 382 citations

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if any of the following hold:

it has ≥500 total citations;
it reaches ≥1.5× the top-1% citation threshold for papers in the same subfield and year (the threshold is the minimum needed to enter the top 1%, not the average within it);
it reaches the top citation threshold in at least one of its specific research topics.

2021 Journal of Hazardous Materials
2021 Small
2020 ACS Catalysis

Peers

Countries citing papers authored by Ajay Kumar

Since Specialization

Citations

This map shows the geographic impact of Ajay Kumar'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 Ajay Kumar with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ajay Kumar more than expected).

Fields of papers citing papers by Ajay Kumar

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ajay Kumar. 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 Ajay Kumar. The network helps show where Ajay Kumar may publish in the future.

Co-authors

The 25 scholars most cited alongside Ajay Kumar, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Ajay Kumar Line = papers co-authored together Ajay Kumar links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 100 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Perovskite Oxide Based Materials for Energy and Environment-Oriented Photocatalysis ACS Catalysis ·Ashish Kumar, Ajay Kumar, Venkata Krishnan Hit paper breakdown →	2020	516
2	Advanced activation of persulfate by polymeric g-C3N4 based photocatalysts for environmental remediation: A review Journal of Hazardous Materials ·Vasudha Hasija, Van‐Huy Nguyen, Ajay Kumar, Pankaj Raizada, Venkata Krishnan, Aftab Aslam Parwaz Khan, Pardeep Singh, Éric Lichtfouse, Chuanyi Wang, Phạm Thị Mai Hương Hit paper breakdown →	2021	382
3	Recent Advances in Plasmonic Photocatalysis Based on TiO₂ and Noble Metal Nanoparticles for Energy Conversion, Environmental Remediation, and Organic Synthesis Small ·Ajay Kumar, Priyanka Choudhary, Ashish Kumar, Pedro H. C. Camargo, Venkata Krishnan Hit paper breakdown →	2021	332
4	Nanoparticles in practice for molecular-imaging applications: An overview Acta Biomaterialia ·Parasuraman Padmanabhan, Ajay Kumar, Sundramurthy Kumar, Ravi Chaudhary, Balázs Gulyás	2016	181
5	Fe doped bimetallic HKUST-1 MOF with enhanced water stability for trapping Pb(II) with high adsorption capacity Chemical Engineering Journal ·Prateek Goyal, Archini Paruthi, Dhruv Menon, Rakesh Behara, Ankit Jaiswal, V Keerthy, Ajay Kumar, Venkata Krishnan, Superb K. Misra	2021	167
6	Formation of nanodiamonds at near-ambient conditions via microplasma dissociation of ethanol vapour Nature Communications ·Ajay Kumar, Pin Ann Lin, Albert Xue, Boyi Hao, Yoke Khin Yap, R. Mohan Sankaran	2013	157
7	Rational Design and Development of Lanthanide-Doped NaYF₄@CdS–Au–RGO as Quaternary Plasmonic Photocatalysts for Harnessing Visible–Near-Infrared Broadband Spectrum ACS Applied Materials & Interfaces ·Ajay Kumar, Kumbam Lingeshwar Reddy, Suneel Kumar, Ashish Kumar, Vipul Sharma, Venkata Krishnan	2018	147
8	Recyclable, bifunctional composites of perovskite type N-CaTiO₃ and reduced graphene oxide as an efficient adsorptive photocatalyst for environmental remediation Materials Chemistry Frontiers ·Ashish Kumar, Suneel Kumar, Ashish Bahuguna, Ajay Kumar, Vipul Sharma, Venkata Krishnan	2017	138
9	Defect-Rich MoS₂ Ultrathin Nanosheets-Coated Nitrogen-Doped ZnO Nanorod Heterostructures: An Insight into in-Situ-Generated ZnS for Enhanced Photocatalytic Hydrogen Evolution ACS Applied Energy Materials ·Suneel Kumar, Ajay Kumar, Vempuluru Navakoteswara Rao, Ashish Kumar, M.V. Shankar, Venkata Krishnan	2019	128
10	Perovskite-structured CaTiO₃ coupled with g-C₃N₄ as a heterojunction photocatalyst for organic pollutant degradation Beilstein Journal of Nanotechnology ·Ashish Kumar, Christian Schürings, Suneel Kumar, Ajay Kumar, Venkata Krishnan	2018	125
11	Nanoscale zinc oxide based heterojunctions as visible light active photocatalysts for hydrogen energy and environmental remediation Catalysis Reviews ·Suneel Kumar, Ajay Kumar, Ashish Kumar, Venkata Krishnan	2019	121
12	Enhanced photocatalytic activity of two dimensional ternary nanocomposites of ZnO–Bi2WO6–Ti3C2 MXene under natural sunlight irradiation Chemosphere ·Vishal Sharma, Ajay Kumar, Ashish Kumar, Venkata Krishnan	2021	118
13	Novel rare earth metal–doped one-dimensional TiO2 nanostructures: Fundamentals and multifunctional applications Materials Today Sustainability ·Jai Prakash, Samriti Sharma, Ajay Kumar, Hongliu Dai, Bruno C. Janegitz, Venkata Krishnan, H.C. Swart, Shuhui Sun	2021	113
14	Highly Efficient Visible Light Active 2D‐2D Nanocomposites of N‐ZnO‐g‐C ₃ N ₄ for Photocatalytic Degradation of Diverse Industrial Pollutants ChemistrySelect ·Suneel Kumar, Ashish Kumar, Ajay Kumar, Ramachandran Balaji, Venkata Krishnan	2018	106
15	Trifunctional metal–organic platform for environmental remediation: structural features with peripheral hydroxyl groups facilitate adsorption, degradation and reduction processes Dalton Transactions ·Harpreet Kaur, Rakesh Kumar, Ajay Kumar, Venkata Krishnan, Rik Rani Koner	2018	103
16	Readings in human development : concepts, measures and policies for a development paradigm Oxford University Press eBooks ·Sakiko Fukuda‐Parr, Ajay Kumar	2004	98
17	Sulfonic acid functionalized graphitic carbon nitride as solid acid–base bifunctional catalyst for Knoevenagel condensation and multicomponent tandem reactions Materials Chemistry Frontiers ·Priyanka Choudhary, Arghya Sen, Ajay Kumar, Suman Dhingra, C. M. Nagaraja, Venkata Krishnan	2021	96
18	Reduced graphene oxide supported MnO2 nanorods as recyclable and efficient adsorptive photocatalysts for pollutants removal Vacuum ·Tripti Chhabra, Ajay Kumar, Ashish Bahuguna, Venkata Krishnan	2018	95
19	Interplay between Mesocrystals of CaTiO₃ and Edge Sulfur Atom Enriched MoS₂ on Reduced Graphene Oxide Nanosheets: Enhanced Photocatalytic Performance under Sunlight Irradiation ChemPhotoChem ·Ashish Kumar, Vempuluru Navakoteswara Rao, Ajay Kumar, M.V. Shankar, Venkata Krishnan	2020	88
20	Wide spectrum photocatalytic activity in lanthanide-doped upconversion nanophosphors coated with porous TiO2 and Ag-Cu bimetallic nanoparticles Journal of Hazardous Materials ·Kumbam Lingeshwar Reddy, Suneel Kumar, Ajay Kumar, Venkata Krishnan	2019	84

About Ajay Kumar

Ajay Kumar is a scholar working on Materials Chemistry, Renewable Energy, Sustainability and the Environment, Organic Chemistry, Electrical and Electronic Engineering and Electronic, Optical and Magnetic Materials, having authored 100 papers that have together received 5.2k indexed citations. Recurring topics across this work include Advanced Photocatalysis Techniques (33 papers), Synthesis and biological activity (17 papers), Gas Sensing Nanomaterials and Sensors (11 papers), Perovskite Materials and Applications (10 papers), Multicomponent Synthesis of Heterocycles (9 papers), Synthesis of heterocyclic compounds (8 papers), Synthesis of Organic Compounds (7 papers) and Synthesis and Reactions of Organic Compounds (6 papers). The work is most often cited by research in Renewable Energy, Sustainability and the Environment (2.8k citations), Materials Chemistry (3.0k citations), Process Chemistry and Technology (110 citations), Inorganic Chemistry (529 citations) and Organic Chemistry (912 citations). Ajay Kumar has collaborated with scholars based in India, United States and United Kingdom. Frequent co-authors include Venkata Krishnan, Ashish Kumar, Suneel Kumar, Priyanka Choudhary, Ashish Bahuguna, Pedro H. C. Camargo, Vipul Sharma, R. Mohan Sankaran, Kumbam Lingeshwar Reddy and Om Prakash. Their work appears in journals such as Materials Chemistry Frontiers, ACS Applied Energy Materials, Chemosphere, Materials Today Sustainability and The Journal of Physical Chemistry C.

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.

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