Research Article:

26. N. D. Sherpa, H. Jungi, S. A. Chowdhury, P. H. Barma, N. Roy*. Synergistic CoFe₂O₄ Spinel–Cobalt Phthalocyanine–Carbon Nanotube Hybrid Catalyst for Highly Selective Electrochemical Nitrate-to-Ammonia Conversion. Dalton Trans. 2026 DOI: https://doi.org/10.1039/D5DT02152A2025

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25. N. D. Sherpa, H. Jungi, S. A. Chowdhury, P. C. Mandal, N. Roy*. Synergistic Effects of Fe2O3 Clusters and Iron Phthalocyanine on Carbon Nanotubes for Enhanced Electrochemical Nitrate Reduction. Chem. Asian J. 2025 DOI: https://doi.org/10.1002/asia.704962025

 

24. P. Halder, N. D. Sherpa, B. Pahari, N. Roy, S. Bhattacharya. Electrical Properties and Electrochemical Performances of Na2O Doped Solid Electrolytes for Supercapacitor Application. J. Alloys & Comp. 2025 10191791972025

 

23. P. C. Mandal, N. D. Sherpa, S. Sarkar, C. K. Roy, O. Ali, N. Roy.*CTF Stabilizes Truncated Octahedral Cu2O Nanocrystals and SnO2 Nanoparticle Assisted Photocatalytic CO2 Reduction in Hybrid Ternary Cu2O/SnO 2/CTF Nanostructures. CrystEngComm 2025, 2714272025

 

22. S. Sarkar, P. C. Mandal, O. Ali, K. Takagi, N. Kubota, N. D. Sherpa, N. N. Ghosh, A. Bhunia, A. Fujishima, C. Terashima, N. Roy.* Nitrogen Doped In2S3 Nanostructures Integrated with In2O3 Nanorods for Photocatalytic CO2 Reduction. New J. Chem. 2025, 4912682025

 

21. P. C. Mandal, N. D. Sherpa, H. Barma, B. Adhikary, N. Roy.* Electrochemical Nitrate Reduction to NH3 by Faceted Cu2O Nanostructures in Acidic Medium. New J. Chem. 2024, 48203842024

 

20. S. Majumder, A. Sinha, D. Roy, B. Ghosh, N. N. Ghosh, T. Ray, V. K. Dakua, A. Datta, I. B. Sarkar, S. Choudhury, A. Roy, N. Roy, M. N. Roy. Exploration of Diverse Interactions of l-Methionine in Aqueous Ionic Liquid Solutions: Insights from Experimental and Theoretical Studies. ACS Omega 2023, 8120982023

 

19. S. N. Yadav, S. Rai, P. Shah, N. Roy,* A. Bhattarai. Spectrophotometric and Conductometric Studies on the Interaction of Surfactant with Polyelectrolyte in the Presence of Dye in Aqueous Medium. J. Mol. Liq. 2022, 3551189492022

 

18. S. Majumder, L. Sarkar, M. Mondal, D. Roy, K. Roy, A. Barman, N. Roy, M. N. Roy. Subsistence of Assorted Molecular Interactions of Substantial Amino Acids Prevalent in Aqueous Solutions of Ionic Liquid (TBMS) Probed by Experimental and Computational Investigations. Res. Chem.2022, 4 1003262022.

 

17. S. Gosavi, R. Tabei, N. Roy, S. S. Latthe, Y. M. Hunge, N. Suzuki, T. Kondo, M. Yuasa, K. Teshima, A. Fujishima, C. Terashima. Low Temperature Deposition of TiO2 Thin Films through Atmospheric Pressure Plasma Jet Processing. Catalyst 2021, 11912021.

 

16. N. Suzuki, A. Okazaki, H. Kuriyama, I. Serizawa, Y. Hirami, A. Hara, Y. Hirano, Y. Nakabayashi, N. Roy, C. Terashima et al. Synergetic Effect in Water Treatment with Mesoporous TiO2/BDD Hybrid Electrode. RSC Adv. 2020, 1017932020.

 

15. N. Suzuki, A. Okazaki, H. Kuriyama, I. Serizawa, A. Hara, Y. Hirano, Y. Nakabayashi, N. Roy, C. Terashima, K. Nakata, K. Katsumata, T. Kondo, M. Yuasa, A. Fujishima. Synthesis of Mesoporous TiO2/Boron-Doped Diamond Photocatalyst and Its Photocatalytic Activity under Deep UV Light (λ = 222 nm) Irradiation. Molecules2018,  2330952018.

 

14. T. Adachi, S. S. Latthe, S. W. Gosavi, N. Roy, A. Fujishima, and C. Terashima. Photocatalytic, Superhydrophilic, Self-cleaning TiO2 Coating on Cheap, Light-weight, Flexible Polycarbonate Substrates. Appl. Surf. Sci. 2018, 4589172018.

 

13. J. Choi, T. Song, H. Han, N. Roy, C. Terashima, A. Fujishima, U. Paik, P. Sudhagar. WO3 Nanofibrous Backbone Scaffolds for Enhanced Optical Absorbance and Charge Transport in Metal Oxide (Fe2O3, BiVO4) Semiconductor Photoanodes towards Solar Fuel Generation. Appl. Surf. Sci. 2018, 4473312018.

 

12. N. Roy,* Y. Hirano, N. Suzuki, C. Terashima A. Fujishima. Facile Deposition of Cu‐SnOx Hybrid Nanostructures on Lightly Boron‐Doped Diamond Electrodes for CO2 Reduction. ChemElectroChem 2018, 1225422018.

 

11. Y. Nakabayashi, Y. Hirano, Y. Sakurai, A. Okazaki, H. Kuriyama, N. Roy, N. Suzuki, K. Nakata, K. Katsumata, I. Serizawa, A. Fujishima, C. Terashima. Positive shift in the potential of photo-electrochemical CO2 reduction to CO on Ag-loaded boron-doped diamond electrode by an electrochemical pre-treatment.  J. Appl. Electrochem. 2018, 48612018.

 

10. N. Roy, K. Bhunia, C. Terashima, A. Fujishima, D. PradhanCitrate-Capped Hybrid Au-TiO2 Nanomaterial for Facile and Enhanced Electrochemical Hydrazine Oxidation. ACS Omega 2017, 212152017.

 

9. N. Roy, Y. Hirano, K. Katsumata, K. Nakata, T. Kondo, M. Yuasa, C. Terashima, A. Fujishima. Boron-doped diamond semiconductor electrodes: Efficient photoelectrochemical CO2 reduction through surface modification. Sci. Rep. 2016,  6380102016.

 

8. N. Roy,* Y. Shibano, C. Terashima, K. Katsumata, K. Nakata, T. Kondo, M. Yuasa, A. Fujishima. Ionic-Liquid-Assisted Selective and Controlled Electrochemical CO2 Reduction at Cu-Modified Boron-Doped Diamond Electrode. ChemElectroChem 2016,  310442016.

 

7. C. Terashima, H. Ryota, N. Roy, Y, Sugiyama, S. S. Latthe, K. Nakata, T. Kondo, M. Yuasa, and A. Fujishima. Charge Separation in TiO2/BDD Heterojunction Thin Film for Enhanced Photoelectrochemical Performance. ACS Appl. Mater. Interfaces 2016,  815832016.

 

6. N. Roy, K. T. Leung, D. Pradhan. Nitrogen Doped Reduced Graphene Oxide Based Pt–TiO2 Nanocomposites for Enhanced Hydrogen Evolution. J. Phys. Chem. C 2015,  119191172015.

 

5. N. Roy, Y. Park, Y. Sohn, D. Pradhan. Controlled synthesis and facets-dependent photocatalysis of TiO2 nanocrystals. Semi. Sci. Technol. 2015, 300440052015.

 

4. N. Roy, K. T. Leung, Y. Sohn, D. Pradhan. Engineered Electronic States of Transition Metal Doped TiO2 Nanocrystals for Low Overpotential Oxygen Evolution Reaction. J. Phys. Chem. C 2014, 118294992014.

 

3. N. Roy, Y. Park, Y. Sohn, K. T. Leung, D. Pradhan. Green Synthesis of Anatase TiO2 Nanocrystals with Diverse Shapes and their Exposed Facets-Dependent Photoredox Activity. ACS Appl. Mater. Interfaces 2014, 6164982014.

 

2. Y, Na, S. W. Lee, N. Roy, D. Pradhan, Y. Sohn. Room temperature light-induced recrystallization of Cu2O cubes to CuO nanostructures in water. CrystEngComm 2014, 1685462014.

 

1. N. Roy, Y. Sohn, D. Pradhan. Synergy of Low-Energy {101} and High-Energy {001} TiO2 Crystal Facets for Enhanced Photocatalysis. ACS Nano 2013, 725322013

 

Review Article:

 

1. N. Roy,* N. Suzuki, C. Terashima A. Fujishima. Recent Improvements in the Production of Solar Fuels: From CO2 Reduction to Water Splitting and Artificial Photosynthesis. Bull. Chem. Soc. Jp. 2019, 921782019

 

Books Chapter: 

 

1. Hydrogen and CO2 Reduction Reactions. Mechanisms and Catalysts. Sudhagar, N. Roy, K. Nakata, C. Terashima, and A. Fujishma. Springer ISSBN: 978-3-319-29641-82016, Page: 105-160, DOI: https://doi.org/10.1007/978-3-319-29641-8_3P.