Dr. Biswajit Choudhury

RESEARCH

My research interests fall in the use of semiconductor nanomaterials for optoelectronics and energy applications. I have an insatiable desire to be actively involved in the following research areas—
1. Electrocatalysis and Photoelectrocatalysis
2. Defect Engineered Semiconductor Nanostructures
3. Optoelectronic materials

CAREER

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

Employment 

1. Associate Professor-I (July 2023-present)                                                                                 Physical Sciences Division, Institute of Advanced Study in Science and Technology, Guwahati, India

2. Assistant Professor-II (July 2019-July 2023)                                                                             
Physical Sciences Division, Institute of Advanced Study in Science and Technology, Guwahati, India

3. DST INSPIRE Faculty (March 2016-July 2019)                                                                                 
Institute of Advanced Study in Science and Technology, Guwahati, India                                                 
Metal oxide-carbon-based hybrid nanomaterials for photocatalytic application

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

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. 2024 (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. 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
  2. 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.
  3. 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.
  4. B. Choudhury-Composites of Carbon Nanodots for Hydrogen Energy Generation (2021) 1st Edn.- All-carbon Composites and Hybrids, Royal Society Chemistry (RSC)
  5. B. Choudhury, Functionalized Nanogold: Its Fabrication and Needs (2020), 1st Edn.-Functionalized Nanomaterials-I Fabrication, CRC Press (Taylor and Francis)
  6. B. Choudhury, Carbon Nitride-A Wonder Photocatalyst (2019)-Nanophotocatalysis and Environmental Applications, Springer Nature.
  7. B. Choudhury, A. Kalita, Defect Engineered Inorganic Nanomaterials for Supercapacitors (2019)-Inorganic Nanomaterials for Supercapacitor Design, CRC Press (Taylor and Francis).

(1) In-house project: "Doped SnS2 nanostructures for electrocatalytic water splitting"                                                                                                                                                            Fund: 8 lakhs; Duration: April 2023-March 2025

(2) In-house project-"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.                                                                                                                                                                                                                                                                                                                     Fund: Rs.16.9 lakhs; Duration: April 2021-March 2023

(3) DST INSPIRE Faculty Project
Duration: 2016-2021

Present students

1. Manash Pratim Nath (September 2019-)
Designation: CSIR-JRF (September 2019-)

2. Manju Kumari Jaiswal (September 2019-)
Designation: DST INSPIRE JRF (Sept. 2019-)

3. Suvanakar Deka (February 2020-)
Designation: Institute JRF (February 2020-)

4. Gayatri Neog (August 2023-)                                                                                                                                                                                                                                                                    Designation: Institute JRF (August 2023-)

Past student(s)

1. Trishamoni Kashyap (January 2019-April 2024)
                                                                                                                                                                                                                                                                                                                                                        Ph.D. awarded: May 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

Summer/Winter Project Trainee

Antarleena Das (Pandu College), Bipanchee Acharya (GUIST), Manash Pratim Sarma (Brahmaputra College), Hrishikesh Sarma (GU); Rinku Talukdar; Abhishek Das (CU); Madhusmita Barman (CU); Pragya Parashar (CU); Panasmita Bharadwaj (CU), Abhishek Das, and Madhusmita Barman

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