Academic

1. Ph.D. Tezpur University
2. MSc. Tezpur University
3. B.Sc. Gauhati University

Employment 

1. Associate Professor-II (September 2024-present)                                                                                                                                                                        Physical Sciences Division, Institute of Advanced Study in Science and Technology, Guwahati, India
2. Associate Professor-I  (July 2023-September 2024)                                                                                                                                                                                                                                                 
3. Assistant Professor-II (July 2019-July 2023)                                                                             
   Physical Sciences Division, Institute of Advanced Study in Science and Technology, Guwahati, India
4. DST INSPIRE Faculty (March 2016-July 2019)                                                                                 
   Institute of Advanced Study in Science and Technology, Guwahati, India

Research Experience

1. Institute Postdoctoral Fellow (Sept 2014-March 2016)                                                                 
   Indian Institute of Technology Guwahati, Guwahati, India
   Graphitic carbon nitride and graphene for photocatalytic applications (Supervisor: Prof. PK Giri)
2. DST Research Associate (March 2014-August 2014)                                                                       
   Tezpur University, Tezpur, India,                                                                                             
   Defect-mediated ferromagnetism in metal oxide and defects manipulation for photocatalysis (Supervisor: Prof. A. Choudhury)
3. Visiting Research Fellow (April 2010-June 2010)                                                                       
   Jawaharlal Nehru Center for Advanced Scientific Research, Bangalore, India
   Interaction of inorganic nanoparticles with Graphene (Supervisor: Prof. CNR Rao)

PUBLICATIONS

2026

1. N.J. Mondal, T. Kundu, B. Mohan, E.A. Sk, M.P. Ghosh, I.U. Muzaddadi, S. Deka, H. Kalita, B. Choudhury, D. Chowdhury, Decoding ligand influence in porphyrin-nickel photocatalysts for degradation of rhodamine B, New J. Chem. (2026) 50 (27): 11391–11404. (I.F. 2.6)
2. N. Sarma, N.P. Baruah, T. Rahman, P.J. Medhi, L.B. Mahanta, B. Choudhury, A. Devi, Iodine-doped trimetallic catalyst for petroleum hydrocarbon photo-degradation coupled with ensemble machine learning simulations, Journal of Industrial and Engineering Chemistry, https://doi.org/10.1016/j.jiec.2026.05.039 (I.F. 7.1)
3. Dhanjit Talukdar, Biswajit Choudhury*, Interfacial Excitons and Band Edge Engineering in SnS2/h-BN heterostructures for efficient solar water splitting, ACS Applied Materials & Interfaces, 18 (2026) 26335-26346. (I.F. 8.2)
4. Netra P. Baruah, H. Buragohain, Palash J. Medhi, Ramesh C. Deka, Dirtha Sanyal, Biswajit Choudhury, Arundhuti Devi, and Devasish Chowdhury, Oxygen vacancy-enriched halogen-modified rare earth tentalate nanocomposites boost photo-sonocatalytic degradation of polycyclic aromatic hydrocarbons, fluorene, Surfaces and Interfaces, 91 (2026) 109193. (I.F. 6.3)
5. Palash J. Boruah, Parismita Kalita, Biswajit Choudhury, and H Bailung, Synergistic reducing and stabilizing ability of plasma-activated water for surfactant-free tunable Au nanoparticle synthesis and modulation of surface-enhanced Raman scattering response, J. Physics D: Applied Physics 59 (2026) 125204. (I.F. 3.2)
6. Suvankar Deka, Manju Kumari Jaiswal, Tanmoy Kalita, Kangkan Saikia, Parasmani Rajput, Som Dutta Kaushik, Dhruba Jyoti Kalita, Biswajit Choudhury*, Orchestrating the d-band and p-band centroids with local Lewis acid sites accelerates O2 evolution performance in ultralow Ru-doped NiFe LDH, Journal of Materials Chemistry A, 14 (2026) 603-616. (I.F. 9.7)
7. Manash P. Nath, Sritam Biswas, Gayatri Neog, Partha Pratim Borah, Pabitra Nath, Biswajit Choudhury*, A synergy of plasmonic D-band holes and dual interfaces of Au nanoparticles boosts photocatalytic degradation of 4-chlorophenol in CeO2 nanoparticles/Au/CeO2 nanorods, ChemNanoMat, 12 (2026) e202500480. (I.F. 2.6)
8. Manash P. Nath, Tanmoy Kalita, Suvankar Deka, Manju K. Jaiswal, Abhishek Borborah, Dhurba J. Kalita, Biswajit Choudhury*, Manifesting p-d orbital hybridization through strategic D-band engineering: A pathway to boosted bifunctional HER/OER electrochemical performance in self-templated Co-SnO2 grown over Co-SnS2 nanosheets, Small Methods, 10 (2026) 2500712. (I.F. 10.7)

2025

1. Manju K. Jaiswal, Gayatri Neog, Palash J. Medhi, Suvankar Deka, Biswajit Choudhury*, Unveiling the photocatalytic performance of potassium-doped WO3/g-C3N4 nanocomposites under broad-band and monochromatic light: The role of the S-scheme heterostructure, Surfaces and Interfaces, 73 (2025) 107473. (I.F. 6.3)
2. Suprakash Rabha, Suvankar Deka, Biswajit Choudhury, Arundhuti Devi, Photofragmentation of Cirproflaxacin: An orchestrated trident attack employing activated carbon-nanodot-decorated Ti-doped WO3 nanodices, Ind. Eng. Chem. Res. 64 (17) (2025) 8578–8590. (I.F. 3.8)
3. Indranee Changmai, Mriganka Sandilya, Suvankar Deka, Biswajit Choudhury, Bimal K. Sarma, Exploration of piezo-/pyro-/photocatalytic properties of Ag/AZO nanocomposite and emerging scavenging actions of biomimetic hydroxypatite, Appl. Surf. Sci. 689 (2025) 162412 (I.F. 6.3).

2024

1. Manju Kumari Jaiswal, Suvankar Deka, Tanmoy Kalita, Dhruba Jyoti Kalita, Biswajit Choudhury*, The Role of W<-> N electron transport channel in potassium-doped WO3/gC3N4 nanocomposites for light-assisted electrocatalytic oxygen and hydrogen evolution reactions: Decoding the S-scheme mechanism, ACS Sustainable Chem. Eng. 12 (40) (2024) 14670-14683 (I.F. 7.1).
2.  Suvankar Deka, Manju Kumari Jaiswal, Parasmani Rajput, Biswajit Choudhury*, Mechanistic insights into electrocatalytically reduced OER performance in marigold-like trimetallic NiF-  based LDH: Charge localisation and d-band orbital filling, J. Mater. Chem A 12 (2024) 9532-9545. (I.F. 11.9)
3. Hridoy Jyoti Bora, Manash P. Nath, Palash Jyoti Medhi, Palash Jyoti Boruah, Parismita Kalita, Heremba Bailung, Biswajit Choudhury, Neelotpal Sen Sarma, and Anamika Kalita, Unveiling the Potential of Covalent Organic Framework Electrocatalyst for Enhanced Oxygen Evolution, Langmuir 2024, 40, 18, 9751–9760. (I.F. 3.9 )

2023

1. Manash P. Nath, Tanmoy Kalita, Dhruba Jyoti Kalita, Dirtha Sanyal, and Biswajit Choudhury*, Self-Assembled p-n Homojunction in SnS2 Nanosheets with Electrocatalytic Hydrogen Evolution: The Role of Sulfur Defects, ACS Appl. Nano Mater. 6 (23) (2023) 22057–22068. (I.F. 5.9)
2. Manash P. Nath, Hrishikesh Sarma, Tridip Chutia, Dhruba Jyoti Kalita, and Biswajit Choudhury*, Self-Assembled p−n Homojunction in SnS₂ Nanosheets for Enhanced Visible Light-Driven Photocatalysis, ACS Appl. Nano Mater. 6 (7) (2023) 5325–5335. (I.F. 5.9)
3. Mintu Sarma, Manju Kumari Jaiswal, Santanu Podder, Jyotisman Bora, Sanjib Karmakar, Biswajit Choudhury, Arup Ratan Pal, A Study on the Applicability of Thin Film over Powder for Visible Light Photocatalysis, Physica B: Condensed Matter 670 (2023) 415354. (I.F. 2.8)
4. Jyotisman Bora, Bablu Basumatary, Santanu Podder, Deepshikha Gogoi, Bikash Sharma, Purbajyoti Bhagowati, Biswajit Choudhury, Dinkar S. Patil, Arup R. Pal, A Substrate Constituent Na-catalyzed Growth of Carbon Nanotubes on Glass Substrate by Atmospheric Pressure PECVD, Applied Surface Science 648 (2024) 158988. (I.F. 6.7)

2022

1. Manju K. Jaiswal, Biswajit Choudhury*, Role of dopants and defects on the photocatalytic performance of g-C3N4 under visible light and sub-bandgap excitation. J. Phys. D: Appl. Phys. 55 (2022) 504002 (I.F. 3.409).
2. Suvankar Deka, M. Bidyarani Rani, M.R. Khan, Keerthana, A. Venimadhav, Biswajit Choudhury*, Piezo-photocatalytic and Photocatalytic bismuth vanadate nanorods with antibacterial property, ACS Appl. Nano Mater. 5 (2022) 10724–10734 (I.F. 6.140)
3. Manash P. Nath, Sritam Biswas, Pabitra Nath, Biswajit Choudhury*, Synergy of Adsorption and Plasmonic Photocatalysis in the Au-CeO2 Nanosystem: Experimental validation and plasmonic modeling. Langmuir 38 (2022) 7628–7638.  (I.F. 4.331)
4. Manju K. Jaiswal, Biswajit Choudhury*, Hydrated Orthorhombic/Hexagonal Mixed-Phase WO3 Core−Shell Nanoribbons for Hole-Mediated Photocatalysis, ACS Appl. Nano Mater. 5 (2022) 3599–3610.  (I.F. 6.140). 

2021

1. T. Kashyap, S. Biswas, S. Ahmed, D. Kalita, P. Nath, B. Choudhury*, Plasmon activation versus plasmon quenching on the overall photocatalytic performance of Ag/Au bimetal decorated g-C3N4 nanosheets under selective photoexcitation: A mechanistic understanding with experiment and theory. Applied Catalysis B: Environmental 298 (2021)120614 (I.F. 24.3)
2. T. Kashyap, P. J. Boruah, H. Bailung, D. Sanyal, B. Choudhury*, Simultaneous layer exfoliation and defect activation in g-C3N4 nanosheets with air-water interfacial plasma: Spectroscopic defect probing with tailored optical properties. Nanoscale Adv. 3 (2021) 3260-3271  (I.F. 5.11)

2020

1. B. Choudhury*, U. Saikia, M.B. Sahariah, A. Choudhury, Vacancy Induced p-Orbital Ferromagnetism in MgO Nanocrystallite. J. Alloys and Compds. 819 (2020) 153060. (I.F. 6.371)

2019

1. T. Kashyap, S. Biswasi, AR Pal, B. Choudhury*, Unravelling the Catalytic and Plasmonic Roles of g-C3N4 Supported Ag and Au Nanoparticles Under Selective Photoexcitation, ACS Sustainable Chem.Eng., 7, 23 (2019)19295-19302. (I.F. 9.224)
2. K. Paul, PK Giri, M. Fuji, H. Ishimata, B. Choudhury*, Evidence for Plasmonic Hot-Electron Injection-induced Superior Visible Light Photocatalysis by g-C3N4 Nanosheets Decorated with Ag-TiO2(B) and Au-TiO2(B) Nanorods, Solar Energy Mater. Sol. Cells. 201 (2019) 110053. (I.F. 7.305)

2018

1. B. Choudhury*, K. Paul, D. Sanyal, A. Hazarika, P.K. Giri, Evolution of Nitrogen- Related Defects in Graphitic Carbon Nitride Nanosheets probed by Positron Annihilation and Photoluminescence Spectroscopy, J. Phys. Chem. C 122 (2018) 9209-9219. (I.F. 4.177)

2017

1. H Saikia, KK Hazarika, B Chutia, B Choudhury, P Bharali. A Simple Chemical Route toward High Surface Area CeO₂ Nanoparticles Displaying Remarkable Radical Scavenging Activity. Chemistry Select 2 (2017) 3369-3375. (I.F. 2.307)
2. R. Gone, B. Choudhury*, P.K. Giri, In-situ decoration of Plasmonic Au Nanoparticles on Graphene Quantum Dots-Graphitic Carbon Nitride Hybrid and Evaluation of its Visible-Light Photocatalytic Performance, Nanotechnology 28 (2017) 395703. (I.F. 3.953)

2016

1. B. Choudhury, PK Giri, Isotype Heterostructure of Bulk and Nanosheets of Graphitic Carbon Nitride for Efficient Visible-Light Photodegradation of Methylene Blue, RSC Adv. 6 (2016) 24976-24984. (I.F. 4.036). 
2. RK Biroju, B Choudhury, PK Giri. Plasmon-enhanced strong visible light photocatalysis by defect engineered CVD graphene and graphene oxide physically functionalized with Au Nanoparticles. Catal. Sci. & Technol. 6 (2016) 7101-7112. (I.F. 6.177)
3. B. Choudhury*, S. Bayan, A. Choudhury, P. Chakraborty, Narrowing of Band Gap and Effective Charge Carrier separation in Oxygen-Deficient TiO2 Nanotubes with improved Visible-Light Photocatalytic activity, J. Colloid Interface Sci.465 (2016) 1-10. (I.F. 9.965)

2015

1. S. Bayan, B. Choudhury, P. Chakraborty, A. Choudhury, A Comprehensive Secondary Ion Mass Spectroscopy analysis of ZnO Nanowalls: Correlation to Photocatalytic Responses, J. Appl. Phys.117 (2015) 095304. (I.F. 2.877)
2. R. Verma, SK. Samdarshi, S. Bojja, S. Paul, B. Choudhury, A Novel Thermophotocatalyst of Mixed-Phase Cerium Oxide (CeO₂/Ce₂O₃) Homocomposite Nanostructure: Role of Interface and Oxygen Vacancies, Solar Energy Mater. Sol. Cells. 141 (2015) 414-422. (I.F. 7.267)
3. S. Paul, P. Chetri, B. Choudhury, GA. Ahmed, A. Choudhury, Enhanced Visible-Light Photocatalytic activity of Gd doped Nanocrystalline Titania, J. Colloid and Interface Sci.439 (2015) 54-61. (I.F. 9.965)
4. B. Choudhury, S. Paul, G.A. Ahmed, A. Choudhury, Adverse Effect of Mn Doping on the Magnetic Ordering in Mn-doped TiO₂ Nanoparticles, Mater. Res. Express, 2 (2015) 096104. (I.F. 2.025)

2014

1. B. Choudhury, P. Chetri, A. Choudhury, Oxygen Defect and Formation of Ce³⁺ Affecting the Photocatalytic properties of CeO₂ Nanoparticles, RSC Adv. 4 (2014) 4663. (I.F. 4.036)
2. B. Choudhury, A. Choudhury, Oxygen Defect dependent variation of Bandgap, Urbach Energy, and Luminescence property of Anatase, Anatase-Rutile Mixed Phase, and Rutile phases of TiO2 Nanoparticles, Physica E 56 (2014) 364-371. (I.F. 3.369)
3. B. Choudhury, R. Verma, A. Choudhury, Oxygen Defect assisted Paramagnetic to Ferromagnetic conversion in Fe doped TiO₂ Nanoparticles, RSC Adv. 4 (2014) 29314-29323. (I.F. 4.036)
4. B Choudhury, P Basyach, A Choudhury. Monitoring F, F^+, and F₂²⁺ related intense defect emissions from nanocrystalline MgO. J. Lumin. 149 (2014) 280-286. (I.F. 4.171)
5. S Paul, B Choudhury, A Choudhury. Magnetic properties study of Gd doped TiO₂ nanoparticles. Journal of Alloys and Compd. 601 (2014) 201-206. (I.F. 6.371)
6. B Choudhury, M Dey, A Choudhury. Shallow and deep trap emission and luminescence quenching of TiO₂ nanoparticles on Cu doping. Applied Nanoscience 4 (2014) 339-346. (I.F. 3.869)
7. P. Chetri, B. Choudhury, A. Choudhury, Room-temperature Ferromagnetism in SnO₂ Nanoparticles: An Experimental and Density Functional Study, J. Mater Chem. C 2 (2014) 9294-9302. (I.F. 8.067)

2013

1. B. Choudhury, A. Choudhury, Room-temperature Ferromagnetism in Defective TiO₂ Nanoparticles: Role of Surface and Grain Boundary Oxygen Vacancies, J. Appl. Phys. 114 (2013) 203906. (I.F. 2.877)
2. B. Choudhury, A. Choudhury, Structural, Optical and Ferromagnetic properties of Cr doped TiO₂ Nanoparticles, Mater. Sci. Eng. B. 178 (2013) 794-800. (I.F. 3.407)
3. B Choudhury, A Choudhury. Structural, optical and ferromagnetic properties of Cr doped TiO₂ nanoparticles. Mater. Sci. Eng. B. 178 (2013) 239-247. (I.F. 3.407)
4. B. Choudhury, A. Choudhury, Oxygen Vacancy and Dopant Concentration-dependent Magnetic properties of Mn-doped TiO₂ Nanoparticle, Current Appl. Phys. 13 (2013) 1025-1031. (I.F. 2.856)
5. B. Choudhury, A. Choudhury, Tailoring Luminescence properties of TiO₂ Nanoparticles by Mn Doping, J. Lumin.136 (2013) 339-346.  (I.F. 4.171)

2012

1. B. Choudhury, A. Choudhury, Dopant Induced Changes in Structural and Optical properties of Cr doped TiO₂ Nanoparticles, Mater. Chem. Phys. 132 (2012) 1112- 1118. (I.F. 4.778)
2. B. Choudhury, A. Choudhury, Ce³⁺and Oxygen Vacancy Mediated Tuning of Structural and Optical Properties of CeO₂ Nanoparticles, Mater. Chem. Phys. 131 (2012) 666-671. (I.F. 4.778)
3. B. Choudhury, B. Borah, A. Choudhury, Extending photocatalytic activity of TiO₂ Nanoparticles to the Visible Region of Illumination by Doping of Cerium, Photochem Photobiol. 88 (2012) 257-264. (I.F. 3.521)
4. B Choudhury, A Choudhury. Luminescence Characteristics of Cobalt doped TiO₂ nanoparticles. J.Lumin. 132 (2012) 178-184. (I.F. 4.171)

2011

1. B. Choudhury, A. Choudhury, AKM Maidul Islam, P. Alagarsamy, M. Mukherjee, Effect of Oxygen Vacancy and Dopant concentration on the Magnetic Properties of High Spin Co²⁺ doped TiO₂ Nanoparticles, J. Magn. Magn. Mater. 323 (2011) 440-446. (I.F. 3.097)
2. B. Das, B. Choudhury, A. Gomathi, A.K. Manna, S.K. Pati, CNR Rao, Interaction of Inorganic Nanoparticles with Graphene, ChemPhysChem 12 (2011) 937-943. (I.F. 3.520)

Book Chapter

1. Manash P. Nath, Manju K. Jaiswal, Suvankar Deka, Biswajit Choudhury (2025) Thermodynamics of Electrochemical Water Splitting: In Inamuddin, T. Altalhi, M. Luqman, J. Cruz (eds.) Water Splitting: Production of Hydrogen, Edn. 1, Springer.
2. Suvankar Deka, Manju K. Jaiswal, Manash P. Nath, Biswajit Choudhury (2025) Kinetics of Electrochemical Water Splitting: In Inamuddin, T. Altalhi, M. Luqman, J. Cruz (eds.) Water Splitting: Production of Hydrogen, Edn. 1, Springer.
3. Biswajit Choudhury (2025) Visible light active perovskites-based photocatalysts: In Inamuddin and T. Altalhi (eds.) Photocatalytic Perovskite Materials: Green Sustainable Process for Chemical and Environmental Engineering and Science. Edn. 1, Elsevier.
4. Gayatri Neog, Biswajit Choudhury (2024) Conjugated porous polymeric semiconductors for photocatalytic hydrogen evolution: In R. Biswas, S.S. Mal, and N. Mazumdar (Eds). Novel Materials for Energy Translation and Storage. https://doi.org/10.52305/MIDM8001. Nova Publisher
5. Biswajit Choudhury (2024) Graphene-Based Materials for Photocatalytic Degradation of Organic Pollutants. In: M.N. Naseer, M. Ikram, A.Z. Zaidi, et al. (eds) Graphen-Based Photocatalysts for Hydrogen Production and Environmental Remediation, Edn. 1, Springer, https://doi.org/10.1007/978-3-031-68464-7
6. T. Kashyap, B. Choudhury (2021) Metal Oxides for Removal of Heavy Metal Ions. In: Inamuddin, Ahamed M.I., Lichtfouse E., Altalhi T. (eds) Remediation of Heavy Metals. Environmental Chemistry for a Sustainable World, vol 70. Springer, Cham. https://doi.org/10.1007/978-3-030-80334-6_6.
7. Manash P. Nath, Manju K. Jaiswal, B. Choudhury (2021), Plasmonic Photocatalyst for Hydrogen Energy Generation,1st Edn. -Nanostructured Photocatalysts: From Fundamental to Practical Applications, Elsevier.
8. B. Choudhury-Composites of Carbon Nanodots for Hydrogen Energy Generation (2021) 1st Edn.- All-carbon Composites and Hybrids, Royal Society Chemistry (RSC)
9. B. Choudhury, Functionalized Nanogold: Its Fabrication and Needs (2020), 1st Edn.-Functionalized Nanomaterials-I Fabrication, CRC Press (Taylor and Francis)
10. B. Choudhury, Carbon Nitride-A Wonder Photocatalyst (2019)-Nanophotocatalysis and Environmental Applications, Springer Nature.
11. B. Choudhury, A. Kalita, Defect Engineered Inorganic Nanomaterials for Supercapacitors (2019)-Inorganic Nanomaterials for Supercapacitor Design, CRC Press (Taylor and Francis).

(1) Synthesis of Nano-engineered 2D transition metal dichalcogenide by Fused Hollow Cathode Plasma: Applications in Flexible Pyro-phototronic Nanogenerator and X-ray detector Devices (Co-PI; Advanced Research Grant (ANRF), ANRF, Ongoing)

(2) High Entropy-based materials for Electrocatalytic Water splitting (PI; DST-IASST, In-house, Ongoing)

(3) Synthesis of 2D Nanomaterial Thin Film Using Magnetron Sputtering and Morphology as well as Interface Engineering for Application in Optoelectronic Devices (DST-IASST, In-house, Completed)

(3) Doped SnS2 nanostructures for electrocatalytic water splitting (PI; DST-IASST, In-house, Completed)

(4) Two-dimensional graphitic carbon nitride nanosheets loaded with Au@WO3 metal-semiconductor bi-plasmonic nanocrystals for maximizing the overall water splitting performance under solar- illumination (PI; DST-IASST, In-house, Completed)

(5) Noble metal nanoparticles anchored hybrid nanostructures of semiconductor metal oxide-2D layered materials for environmental applications (PI; DST-INSPIRE Faculty Project Grant; Completed)

Present students

Postdoctoral Student

Dr. Dhanjit Kalita

Doctoral Student(s)

1. Palash J. Medhi
2. Gayatri Neog
3. Shilpi Stuti Bora
4. Horsita Kalita
5. Partha Pratim Borah
6. Abhishek Sutradhar

Past student(s)

1. Suvanakar Deka (February 2020-April 2026)
2. Manash Pratim Nath (September 2019-April 2025)
3. Manju Kumari Jaiswal (October 2019-April 2025)
4. Trishamoni Kashyap (January 2019-April 2024)

M.Sc./M.Tech Dissertation

1. Archita Choudhury (Jan-June 2018), M.Tech. in Materials Science and Engineering, GUIST, Guwahati, Assam
2. Jayanta Talukdar (January-March 2020), M.Sc. in Physics (4th Sem), Kaziranga University, Jorhat, Assam
3. Hrishikesh Sharma (April-July 2021), M.Sc. in Physics (4th Sem), Gauhati University, Guwahati, Assam

Summer/Winter Project Trainee

Interested students to pursue Postdoc, Ph.D., M.Sc., / M.Tech. short term internship and dissertation works can contact me at biswa[dot]tezu[at]gmail[dot]com, biswajitchoudhury[at]iasst[dot]gov[dot]in