M.Sc. Project Duration: 2014-2015

Project Title: “Effect of pH and Crystallite Phase on Solar Photocatalytic Performance of Titania.”

Book Chapter: Ranjith G. Nair, Abinash Das, Karim Bouchmella, and Bruno Boury, “Influence of V Doping on Physicochemical Properties of Mesoporous Titania with Potential Application in Solar Photocatalysis” Methodologies and Applications for Analytical and Physical Chemistry, ISBN: 9781771886215 (2017).

Conference: Oral: Abinash Das, Rubi Barman and Ranjith G. Nair, Role of pH on phase transformation and Photocatalytic Performance of Titania, National Conference on Renewable Energy Technology Utilization for Rural Development and Trade Show, Organized at: North Eastern Hill University, Shillong, Meghalaya, 27th Feb. to 1st March, 2017

M.Sc. Project Duration: 2015-2016

Project Title: “Physicho-Chemical Characterization of Vanadium Doped Mesoporous Titania for Solar Energy Applications.”

Conference: Abinash Das and Ranjith G. Nair, Effect of V doping on Structural, Surface and Optical Properties of Pristine Titania Nanomaterials, National Conference On Solid State Ionics, Organized at: Tezpur University, 21st to 23rd Dec., 2015

M.Sc. Project Duration: 2015-2016

Project Title: “Synthesis and Characterization of ZnO Nano Photocatalyst for Solar Energy Application.” 

M.Tech. Project Duration: 2015-2016

Project Title: “CFD Modeling of Immobilized Photocatalytic Reactor for Waste Water Treatment”.

Under joint supervision with Dr. Agnimitra Biswas, Department of Mechanical Engineering 

M.Sc. Project Duration: 2016-2017

Project Title: "Engineering ZnO nanostructures for efficient solar photocatalysis"

Conference: Das A, Patra M, Wary RR, Gupta P, Nair RG. Photocatalytic performance analysis of Degussa P25 under various laboratory conditions. InIOP Conference Series: Materials Science and Engineering 2018 Jun 1 (Vol. 377, No. 1, p. 012101). IOP Publishing. 

Journal:

1. Abinash Das, P Malakar, Ranjith G Nair , Engineering of ZnO nanostructures for efficient solar photocatalysis, Materials Letters  219(2018):76-80 

M.Sc. Project Duration: 2016-2017

Project Title: "Design, fabrication and testing of a prototype indigenous photocatalytic reactor along with reusability analyses of some photocatalysts"

Conference: Abinash Das, Moumita Patra, Riu Riu Wary, Pradip Gupta, Ranjith G.Nair, "A Photocatalytic performance analysis of Degussa P25 under various laboratory conditions", IOP Publishing (2018) 

M.Sc. Project Duration: 2017-2018

Project Title: "Cationic doped ZnO: An efficient nanophotocatalyst for solar energy applications"

Journal: 

1. Abinash Das, Dongyu Liu, Riu Riu Wary, Andrey S. Vasenko, Oleg V. Prezhdo, and Ranjith G. Nair, Mn-Modified ZnO Nanoflakes for Optimal Photoelectrochemical Performance Under Visible Light: Experimental Design and Theoretical Rationalization, Journal of Physical Chemistry Letters, 14 (43), (2023) 9604-9611 

2. Abinash Das, Dongyu Liu, Riu Riu Wary, Andrey S. Vasenko, Oleg V. Prezhdo, and Ranjith G. Nair, Enhancement of Photocatalytic and Photoelectrochemical Performance of ZnO by Mg Doping: Experimental and Density Functional Theory Insights, The Journal of Physical Chemistry Letters, 14 (18), (2023) 4134-4141  

3. Das A, Wary RR, Nair RG. Cu modified ZnO nanoflakes: An efficient visible light-driven photocatalyst and a promising photoanode for dye sensitized solar cell (DSSC). Solid State Sciences. 2020 Jun 1;104:106290. 

4. Das A, Wary RR, Nair RG. Mn-doped ZnO: Role of morphological evolution on enhanced photocatalytic performance. Energy Reports. 2020 Feb 1;6:737-41. 

Conference:

1. Das A, Patra M, Wary RR, Gupta P, Nair RG. Photocatalytic performance analysis of Degussa P25 under various laboratory conditions. InIOP Conference Series: Materials Science and Engineering 2018 Jun 1 (Vol. 377, No. 1, p. 012101). IOP Publishing. 

2. Das A, Wary RR, Nikhil SK, Nair RG. Cu doped ZnO as an efficient visible active photocatalyst. InAIP Conference Proceedings 2019 Oct 29 (Vol. 2162, No. 1, p. 020120). AIP Publishing LLC. 

3. Das A, Wary RR, Nair RG. Magnesium doped zinc oxide as an efficient solar photocatalyst. InAIP Conference Proceedings 2019 Jul 11 (Vol. 2115, No. 1, p. 030103). AIP Publishing LLC. 

M.Sc. Project Duration: 2017-2018

Project Title: "Performance engineering of ZnO based nanocomposite photocatalyst for solar energy applications"

Journal: 

1. Das, Abinash, Moumita Patra, Muthuraaman Bhagavathiachari, and Ranjith G. Nair. "Defect-induced visible-light-driven photocatalytic and photoelectrochemical performance of ZnO–CeO2 nanoheterojunctions." Journal of Alloys and Compounds 858 (2021): 157730 

2. Das, Abinash, Moumita Patra, Muthuraaman Bhagavathiachari, and Ranjith G. Nair. "Role of type II heterojunction in ZnO–In2O3 nanodiscs for enhanced visible-light photocatalysis through the synergy of effective charge carrier separation and charge transport." Materials Chemistry and Physics 263 (2021): 124431  

3. Das A, Patra M, Bhagavathiachari M, Nair RG. Defect-induced visible-light-driven photocatalytic and photoelectrochemical performance of ZnO–CeO2 nanoheterojunctions. Journal of Alloys and Compounds. 2021 Mar 25;858:157730. 

Conference:

1. Das A, Patra M, Wary RR, Gupta P, Nair RG. Photocatalytic performance analysis of Degussa P25 under various laboratory conditions. InIOP Conference Series: Materials Science and Engineering 2018 Jun 1 (Vol. 377, No. 1, p. 012101). IOP Publishing. 

2. Das A, Patra M, Hazarika M, Nair RG. ZnO-In2O3 nanocomposite: An efficient solar photocatalyst. InAIP Conference Proceedings 2019 Apr 24 (Vol. 2100, No. 1, p. 020033). AIP Publishing LLC. 

M.Sc. Project Duration: :2018-2019

Project title: Design, Fabrication and Testing of  a Continuous Photocatalytic Reactor.

Conferences: 

1. A Das, M Hazarika, RG Nair; Synthesis and  characterization of ZnO nanoflower as an efficient solar photocatalysis. NCPCM ( National Conference of physics and Chemistry on materials)-2018, Devi Ahilya university, Indore

2. A Das, M Patra, M Hazarika, RG Nair; ZnO-In203 nano composite: as an efficient solar photocatalysis. NCPCM (National Conference of physics and Chemistry on materials) 2018, Devi Ahilya University, Indore.

MSc project duration: 2019-2020

Project title: “A Study of the Inuence of pH on Anatase-Rutile Phase Composition of pristine and doped TiO2” 

Conferences: 

1. Nikhil S.K., Joshi Pushkar Shrikant, and Ranjith G. Nair, Fabrication and Testing of an Indigenous Immobilized Photocatalytic Reactor for Water Purification, Anveshan 2.0 Student Research Convention 2020, Organized at: National Institute of Technology, Silchar, Assam, 10th to 12th Jan., 2020.

2. Nikhil S.K., Joshi Pushkar Shrikant, and Ranjith G. Nair, Role Of pH Tuning On The Performance Of C Doped TiO2 For Efficient H2 Production, 28th National (Virtual) Conference on Condensed Matter Physics - Condensed Matter Days (CMDAYS20), Organized at: National Institute of Technology, Silchar, Assam, 11th to 13th Dec., 2020. 

M.Sc. Project Duration: :2020-2021

Project title: Role of Various Photocatalytic Reaction Parameters on Degradation of Dyes using Degussa P25 as Photocatalyst.

Journal: 

1. Trinayana Deka, Pujita Ningthoukhongjam, Mrigendra Yadav, Ranjith G Nair , Optimization of various photocatalytic reaction parameters of Degussa P25 under UV irradiation , Journal of the Indian Chemical Society , 2022 November, 99 100747 

M.Sc. Project Duration: :2021-2022

Project title: Role of Iron (Fe) dopant concentration on titania phase transformation and photocatalytic performance.

Journal: 

1. Nikhil S. K., Gopika Rajeev Nair, Mathan Kumar, Muthuraaman Bhagavathiachari, Ranjith G. Nair, A doped heterojunction photoanode: a strategy-driven approach to improve the charge carrier dynamics and photoconversion performance of the TiO2- based dye-sensitized solar cell,  Journal of Material Science: Materials in Electronics 35 (2024), 602 

2. Nikhil S. K., Gopika Rajeev Nair, Mathan Kumar, Muthuraaman Bhagavathiachari, Ranjith G. Nair, A doped heterojunction photoanode: a strategy-driven approach to improve the charge carrier dynamics and photoconversion performance of the TiO2- based dye-sensitized solar cell,  Journal of Material Science: Materials in Electronics 35 (2024), 602 

M.Sc. Project Duration: :2021-2022

Project title: Synergy of Plasmonic Silver and Mixed Phase Titania for Improved Performance of Dye Sensitized Solar Cell.

M.Sc. Project Duration: :2022-2023

Project title: Performance Engineering of SnO2 based Dye Sensitized Solar  Cell Through  Optimization of Dye Loading  and Film thickness

Conference: 

1. Nisha Banerjee, Tusar Rakshit, Ranjith G. Nair, Performance engineering of SnO2-based dye-sensitized solar cells through optimization of dye loading and film thickness (2024) 10.1109/SILCON59133.2023.10404444.

M.Sc. Project Duration: :2022-2023

Project title: Solving The  Chip  Component Placement Optimization Problem Using Hybrid  Classical Quantum Machine Learning

M.Sc. Project Duration: :2022-2023

Project title: Development and Testing of an Indigenous Continuous Fixed Mode Photocatalytic Reactor for Waste Water Treatment

Patent: 

1. Nikhil S K, Pujita Ningthoukhongjam, Abani Mahakur, Ranjith G. Nair, A cartridge-type fixed-mode continuous-flow photocatalytic reactor system for efficient wastewater treatment, Indian Patent (2024) 202431024949 (Granted). 

M.Sc. Project Duration: :2023-2024

Project title: Studies on the Role of Reaction Parameters on Photocatalyticand Sonophotocatalytic Hydrogen Production

Journal: 

1. Sarita Jena, Laldingliana Vanchhawng, Pujita Ningthoukhongjam, Ranjith G. Nair, Influence of Critical Reaction Parameters of Titania on Photocatalytic Hydrogen Evolution in Particulate and Thin‐Film Modes under Solar and Ultraviolet Irradiation, ChemNanoMat, 12(1) (2026) e202500383 (Q2, Impact Factor: 2.6)

M.Sc. Project Duration: :2023-2024

Project title: Studies on the role of binary and ternary heterojunction on photocatalytic performance under solar irradiation

Journal: 

1. Pujita Ningthoukhongjam, Anand Shankar Mallik, Sam John, Ranjith G Nair, Unveiling the synergy between efficient charge separation and transport in multiphasic Titania-ZnO heterojunctions for enhanced solar-driven photocatalytic hydrogen evolution, Journal of Alloys and Compounds, 1036 (2025) 181875 (Q1, Impact Factor: 6.3)

M.Sc. Project Duration: :2023-2024

Project title: Development of Surface Plasmon Resonance Enabled TiO2-ZnO  Nanocomposite as an Efficient Photocatalyst

M.Sc. Project Duration: :2023-2024

Project title: Studies on TiO2-CdS Heterojunction on physiochemical and photocatalytic performance under visible light irradiation 

M.Sc. Project Duration: :2024-2025

Project title: Studies on Role of Phase and Surface Morphology of CdS on Photocatalytic Dye Degradation under Various Irradiation Conditions

M.Sc. Project Duration: :2024-2025

Project title: Studies on the role of catalyst loading and film preparation technique on photocatalytic hydrogen production

M.Tech. Project Duration: :2024-2025

Project title: Mesoporous Titania: A Strategic Approach to Improve the Solar Photocatalytic Dye Degradation and Hydrogen Evolution Performance

M.Sc. Project Duration: :2025-2026

Project title: Role of Multiphasic Titania Heterojunctions for Photocatalytic and Sonophotocatalytic Hydrogen Evolution