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Dr. Prajwal Chettri

Physics
Salesian College

Interests

Wet chemical synthesis: graphene oxide, silver nanoparticles/nanowires, alloy and intermetallic metal-nanoparticles, GQD, graphene composites. Instrument handling: Raman, UV-vis and Fluorescence spectrophotometers, FTIR, X-ray diffractometer, SQUID magnetometer, Atomic Force Microscope, Four probe station & ambient Scanning Tunneling Microscope. Research Interests: 3D-graphene architecture, Dye-graphene optical activities, Nanomaterial-composites, Plasmonics, SERS and Fluorescence sensors, electrical and magnetic properties of nanomaterials.

Projects

2022 UGC-DAE-CSR CRS/2021-22/02/476 (Government of India) Investigation of structural modifications in graphene under extreme thermal gradient and its immediate impact on physiochemical properties. PI – Dr. Prajwal Chettri Co-PI – Dr. S. C. Das Collaborator – Dr. Goutam Pramanik

Publications

2022 Singh, M. K., Verma, A., Basu, J., Sinha, I., Chettri, P., Tripathi, A., Tiwari, A. & Mandal, R. K. Rice extract assisted green synthesis of Au nanoparticles: Catalytic and SERS activities. Surface Review and Letters, DOI: 10.1142/S0218625X22500901. [IF – 1.24] 2022 Chettri, P., Tripathi, A. & Tiwari, A. Effect of silver nanoparticles on electrical and magnetic properties of reduced graphene oxide. Materials Research Bulletin, 150, 111752. [IF – 5.6] 2020 Luitel, H., Roy, S., Chakrabarti, M., Chettri, P., Tiwari, A., Naik, V., &Sanyal, D. Room temperature ferromagnetism in boron-doped oxides: A combined first principle and experimental study. Philosophical Magazine Letters, 100, 141-153. [IF – 1.264] 2020 Singh, M. K., Chettri, P., Basu, J., Tripathi, A., Mukherjee, B., Tiwari, A., & Mandal, R. K. Synthesis of anisotropic Au-Cu alloy nanostructures and its application in SERS for the detection of Methylene Blue. Materials Research Express, 7, 015052. [IF – 1.941] 2019 Singh, M. K., Chettri, P., Basu, J., Tripathi, A., Mukherjee, B., Tiwari, A., & Mandal, R. K. Synthesis of rod-shaped Au-Cu intermetallic nanoparticles and SERS detection. Materials Letters, 249, 33-36. [IF – 3.574] 2019 Pradhan, A., Sharma, L., Tiwari, A. & Chettri, P.. Characterization of pectin extracted from Citrus reticulata L. Blanco collected from different altitudes of Sikkim Himalaya. Journal of Applied and Natural Science, 11, 168-181. 2019 Luitel, H., Chettri, P., Tiwari, A., & Sanyal, D. Experimental and first principle study of room temperature ferromagnetism in carbon-doped rutile TiO2. Materials Research Bulletin, 110, 13-17. [IF – 5.6] 2019 Chettri, P., Singh, M. K., Tripathi, A., Pathak, A. P., Mandal, R. K., & Tiwari, A. Eriochrome Black T sensing using silver nanoparticle-reduced graphene oxide composite via luminescent “turn-off” mechanism and its biosorption on guava (Psidium guajava) leaf powder. Graphene Technology, 4, 41-51. 2019 Chettri, P., & Tiwari, A. Tuning photoluminescence quenching efficiency of reduced graphene oxide substrates using silver nanoparticles. Thin Solid Films, 669, 208-214. [IF – 2.358] 2018 Singh, M. K., Chettri, P., Tripathi, A., Tiwari, A., Mukherjee, B., & Mandal, R. K. Defect mediated magnetic transitions in Fe and Mn doped MoS2. Physical Chemistry Chemical Physics, 20, 15817-15823. [IF – 3.945] 2017 Chettri, P., Vendamani, V. S., Tripathi, A., Singh, M. K., Pathak, A. P., & Tiwari, A. Green synthesis of silver nanoparticle-reduced graphene oxide using Psidium guajava and its application in SERS for the detection of methylene blue. Applied Surface Science, 406, 312-318. [IF – 7.392] 2016 Chettri, P., Vendamani, V. S., Tripathi, A., Pathak, A. P., & Tiwari, A. Self assembly of functionalised graphene nanostructures by one step reduction of graphene oxide using aqueous extract of Artemisia vulgaris. Applied Surface Science, 362, 221-229. [IF – 7.392]
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Member since October 24, 2022
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