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未来を触媒する物質変換研究部門村山研究室
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  • 博士研究員

    Krishan KUMAR

    居室：触媒科学研究所(創成棟)　３階　03-311-1
    Tel：011-706-9137
    E-mail：krishankumar.kumar0309(の後にアットマーク)cat.hokudai.ac.jp

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  • 博士研究員
  • Krishan Kumar was awarded his Ph.D. degree in 2024 under the esteemed supervision of Dr. Vijay Parewa, MRSC, MNASc, at the Department of Chemistry, University of Rajasthan, Jaipur, India. During his doctoral research, he focused on designing metal-free photocatalytic materials for visible-light-driven redox organic transformations with selective C−C bond formation. Following his Ph.D., he continued working with Dr. Vijay Parewa research group as a senior researcher, where he developed electronically modulated photocatalysts for efficient CO2 valorization. In August 2025, he joined Professor Toru Murayama’s research group at the Institute for Catalysis, Hokkaido University, Japan, as a postdoctoral research fellow team member. His current research primarily focuses on the rational design and precise tailoring of novel single-atom-based catalytic materials for efficient hydrogenation reactions.
  • Affiliation Society
  • Associate Member of the Royal Society of Chemistry (AMRSC), London; Life member, Society of Material Chemistry (SMC), India
  • Research Achievements
  • (a) Patent:
    1. Gautam, Y. K., Saini, S., Saini, S., Kumar, K., Singh, B. P., Parewa, V.,
    Sustainable valorization of household plastic waste into water soluble luminescent nanocarbons. Indian Patent No. 539964, 2024 (Granted)

    2. Nirmal, N. K., Parewa, V., Verma, G. S., Tiwari, A. K., Kashyap, S., Verma, C., Saini, S., Kumar, K., Meena, P. and Gurjar, A.
    An Antibiotic- Free Wound-Healing Gel Composition and Methods of Obtaining thereof. Application No. 202411087348, 2025. (Published)

    (b) Research papers:
    1. Saini, S., Kumar, K., Saini, P., Sethi, M., Meena, P., Dandia, A., Weigand, W. and Parewa, V.,*
    Elucidating the Synergistic Promotional Mechanism of Water and Oxygen in the Aerobic C–C Homocoupling Reaction Catalyzed by Visible-Light-Derived Core–Shell Pd@A-CQDs Nanostructures,
    ACS Applied Materials & Interfaces, 2024, 16, 35, 46200–46215.
    https://doi.org/10.1021/acsami.4c04739

    2. Kumar, K., Saini, P., Sethi, M., Saini, S., Gurjar, A., Konar, A., Dietzek-Ivansic, B., Weigand, W. and Parewa, V.,*
    Vacancy-Engineered 1D Nanorods with Spatially Segregated Dual Redox Sites for Visible-Light-Driven Cooperative CO2 Reduction,
    ACS Applied Materials & Interfaces, 2024, 16(33), 43498-43511.
    https://doi.org/10.1021/acsami.4c06834

    3. Meena, S., Sethi, M., Saini, S., Kumar, K., Saini, P., Meena, S., Kashyap, S., Yadav, M., Meena, M.L., Dandia, A. Nirmal, N.K., and Parewa, V.,*
    Molecular surface-dependent light harvesting and photo charge separation in plant-derived carbon quantum dots for visible-light-driven OH radical generation for remediation of aromatic hydrocarbon pollutants and real wastewater.
    Journal of Colloid and Interface Science, 2024, 660, 756-770.
    https://doi.org/10.1016/j.jcis.2024.01.079

    4. Saini, S., Saini, P., Kumar, K., Sethi, M., Meena, P., Gurjar, A., Dandia, A., Dhuria, T. and Parewa, V.,*
    Unlocking the Molecular Behavior of Natural Amine-Targeted Carbon Quantum Dots for the Synthesis of Diverse Pharmacophore Scaffolds via an Unusual Nanoaminocatalytic Route.
    ACS Applied Materials & Interfaces, 2023, 15(42), 49083.
    https://doi.org/10.1021/acsami.3c08812

    5. Meena, S., Sethi, M., Meena, S., Saini, P., Kumar, K., Saini, S., Shekhawat, S., Meena, M.L., Dandia, A., Lin, S.D. and Parewa, V.,*
    Dopant-driven recombination delay and ROS enhancement in nanoporous Cd1-xCuxS heterogeneous photocatalyst for the degradation of DR-23 dye under visible light irradiation.
    Environmental Research, 2023, 231, 116181.
    https://doi.org/10.1016/j.envres.2023.116181

    6. Saini, P., Kumar, K., Sethi, M., Saini, S., Nag, P., Meena, M.L., Rathore, K.S., Dandia, A., Vennapusa, S.R., Lin, S.D., Weigand, W., and Parewa, V.,*
    Photosensitized Radical-Anion-Driven Metal-Free Selective Reduction of Aldehydes Using Graphene Oxide as an Electron Relay Mediator under Visible Light.
    ACS Applied Materials & Interfaces, 2023, 15(5), 6970-6981.
    https://doi.org/10.1021/acsami.2c21235

    7. Meena, M.L., Kumar, K., Saini, P., Sethi, M., Saini, S., Mohapatra, A., Som, S., Lin, R.Y., Chu, C.W., Lu, C.H., Lin, S.D., and Parewa, V.,*
    Competent production of hydrogen and hydrogenation of carboxylic acids using urea-rich wastewater over visible-light-responsive rare earth doped photocatalyst.
    Journal of Taiwan Institute of Chemical Engineers, 2023, 144, 104734.
    https://doi.org/10.1016/j.jtice.2023.104734

    8. Saini, S., Kumar, K., Saini, P., Mahawar, D.K., Rathore, K.S., Kumar, S., Dandia, A. and Parewa, V.,*
    Sustainable synthesis of biomass-derived carbon quantum dots and their catalytic application for the assessment of α, β-unsaturated compounds.
    RSC Advances, 2022, 12(50), 32619-32629.
    https://doi.org/10.1039/D2RA05201F

    9. Dandia, A., Saini, P., Kumar, K., Sethi, M., Rathore, K.S., Meena, M.L. and Parewa, V.,*
    Synergetic Effect of Functionalized Graphitic Carbon Nitride Catalyst and Ultrasound in Aqueous Medium: An Efficient and Sustainable Synthesis of 1, 3, 5-Trisubstituted Hexahydro-1, 3, 5-Triazines.
    Current Research in Green and Sustainable Chemistry, Elsevier, 2021, 4, 100170.
    https://doi.org/10.1016/j.crgsc.2021.100170

    (c) Review articles:
    1. Saini, P., Kumar, K., Saini, S., Sethi, M., Meena, P., Gurjar, A., Weigand, W. and Parewa, V.,* Photocatalytic single electron reduction of CO2 into carbon dioxide radical anion (CO2·−): Generation, detection and chemical utilization.
    Journal of Energy Chemistry, 2025, 105, 525-559.
    https://doi.org/10.1016/j.jechem.2025.02.013

    2. Saini, P., Kumar, K., Saini, S., Sethi, M., Meena, P., Gurjar, A., Weigand, W. and Parewa, V.,*
    Illuminating New Frontiers: Harnessing Nanoscale Photocatalysis for Sustainable C-H Functionalization Reactions with Visible Light.
    Coordination Chemistry Reviews, 2024, 502, 215607.
    https://doi.org/10.1016/j.ccr.2023.215607

    3. Dandia, A., Saini, P., Sethi, M., Kumar, K., Saini, S., Meena, S., Meena, S. and Parewa, V.,*
    Nanocarbons in quantum regime: An emerging sustainable catalytic platform for organic synthesis.
    Catalysis Reviews, 2023, 65(3), 874-928.
    https://doi.org/10.1080/01614940.2021.1985866

    4. Dandia, A., Parihar, S., Kumar, K., Saini, S. and Parewa, V.,*
    Carbocatalysis: A metal free green avenue towards carbon-carbon/heteroatom bond construction,
    Physical Sciences Reviews, 2022, 7, 1-32.
    https://doi.org/10.1515/psr-2022-0004

    (d) Books/Monographs:
    1. Kumar, K., Saini, P., Meena, S., Meena, P. and Parewa, V.*
    “Photocatalysis in Organic Reactions Using Doped g-C3N4” In “Catalytic Applications of Carbon-Nitride Based Nanomaterials”.
    Bentham Science Publishers, 2025. (In press)

    2. Saini, P., Kumar, K., Saini, S., Sethi, M., Dandia, A., Weigand, W. and Parewa, V.,*
    “Nano-structured materials for visible-light-driven organic synthesis: A new catalytic solutions for a sustainable world” In “Advances in materials science: Fundamentals and applications”.
    Springer, 2025. (In press)

    3. Saini, P., Kumar, K., Meena, S., Mahawar, D. K., Dandia, A., Ameta, K. L. and Parewa, V.,*
    “An Overview of Cinnolines, Quinazolines and Quinoxalines: Synthesis and Pharmacological Significance” in “N-Heterocycles-Synthesis and Biological Evaluation”,
    Springer, 2022, 331-354.
    https://doi.org/10.1007/978-981-19-0832-3_9

    4. Saini, S., Kumar, K., Meena, S., Dandia, A., Ameta, K. L. and Parewa, V.,*
    “An Insight into the Synthesis and Pharmacological Activities of Indoles, Isoindoles and Carbazoles” in “N-Heterocycles - Synthesis and Biological Evaluation”,
    Springer, 2022, 395-413.
    https://doi.org/10.1007/978-981-19-0832-3_11

    5. Meena, S., Kumar, K., Saini, S., Dandia, A., Parewa, V.,*
    “Multicomponent Reactions Using Nanocatalysts” in “Advanced Nanocatalysis for Organic Synthesis and Electroanalysis”,
    Bentham Science Publishers, 2022, 172-192.
    https://doi.org/10.2174/97898150401661220101

    6. Dandia, A., Parihar, S., Kumar, K., Saini, S. and Parewa, V.,
    “Combination of Green Chemistry and magnetic nano catalyst: A sustainable approach for the synthesis of value added materials” in “Magnetic nano-catalysis” Walter de Gruyter GmbH & Co KG, Germany, 2022.
    https://doi.org/10.1515/9783110782165-005

    7. Dandia, A., Parihar, S., Kumar, K., Saini, S. and Parewa, V.,
    “Carbocatalysis: A metal free green avenue towards carbon-carbon/heteroatom bond construction”,
    De Gruyter publisher, Germany, 2022.
    https://doi.org/10.1515/psr-2022-0004