July 9, 2019-May 12, 2025 PhD (PMRF) in Chemical Engineering
Indian Institute of Technology Kharagpur
o Thesis title: Photocatalytic degradation of antibiotics present in pharmaceutical wastewater
o Supervisor: Prof. Amar Nath Samanta
July 2017- May 2019 M. Tech in Chemical Engineering
Indian Institute of Technology Kharagpur
o Project title: Adsorptive removal of Arsenic (III) and Arsenic(V) from wastewater by LD slag Geopolymer
o Supervisor: Prof. Amar Nath Samanta
Aug 2012-June 2016 B. Tech in Chemical Engineering
Haldia Institute of Technology
RESEARCH, TEACHING, or OTHER INTERESTS
Chemical Engineering, Catalysis, Pollution, Environmental Engineering
A Rapid and Complete Photodegradation of Doxycycline Using rGO@CuO Nanocomposite Under Visible and Direct Sunlight: Mechanistic Insights and Real-Time Applicability Panchraj Verma, Subrata Das, Shubham Raj, Raphaël Schneider Nanomaterials, 2025 In this study, a simple and efficient hydrothermal strategy was developed to modify reduced graphene oxide (rGO) with copper (II) oxide (CuO) nanoparticles by varying the weight ratio of rGO relative to CuO (rGO@CuO1:1, rGO@CuO1:2, and rGO@CuO2:1). The obtained materials were further characterized using analytical tools. Photocatalytic performance was assessed using adsorption–photocatalysis experiments under a household LED light source (10 W, λ > 400 nm), and the degree of degradation of doxycycline (DOX) was evaluated using UV-Vis spectrophotometer. The highest efficiency of 100% was achieved with a DOX concentration of 70 ppm, rGO@CuO1:1 dosage of 1 mg/mL, and pH 7 within 30 min of irradiation. The degradation kinetics followed the pseudo-first-order model (R2 ~0.99) and the Langmuir adsorption isotherm, indicating that DOX on the surface is governed by a dynamic equilibrium between adsorption and degradation rates. Furthermore, efficacy was tested using real water samples, and the recyclability of the catalyst was evaluated in up to five cycles.
Design and Sustainable Synthesis of rGO@TiO2 as Visible Light Photo-Catalyst for Decontamination of Norfloxacin from Discharge Waters Panchraj Verma, Subrata Das, Shubham Raj, Chandramika Bora Chemistryselect, 2025 Here, we have reported the synthesis of rGO modified with TiO 2 at various proportions, along with its scale‐up using a facile and greener probe sonication method. The rGO@TiO 2 nanocomposite was characterized structurally and morphologically and used as an efficient heterogeneous photocatalyst for the degradation of generic norfloxacin (NOR) from wastewater. The photosensitization of rGO@TiO 2 exhibited a shift in the absorption edge towards the visible region and separation of the induced charge carriers. Optimized results showed rGO@TiO 2 (compositional ratio‐2:1 w/w, dose‐1 mg mL −1 , and pH‐8) achieved the highest degradation with degradation efficiency (Qe) ∼97% within 90 mins of irradiation. Scavenging experiments confirmed the active role of O 2 •‐ for the degradation, which leads to the 62% conversion of initial organic carbon to harmless CO 2 calculated using a TOC analyzer. The photodegradation kinetics of NOR fits well with pseudo‐1 st ‐order kinetics and follows the Langmuir‐Hinshelwood mechanism(R 2 ∼ 0.99). The comparative assessment for the real‐time utility of rGO@TiO 2 was performed using a real sample of generic NOR and river/pond water that showed similar Qe ∼96% with catalyst reusability up to 5 cycles. Overall, the findings indicate the development of a sustainable and cost‐effective photocatalyst, rGO@TiO 2 , that can be intended for decontamination of pharmaceutical pollutants from contaminated waters.
Construction of a novel SnS2/MIL-88A (Fe) Z-scheme for boosting charge transfer assisted with peroxymonosulfate for the effective photocatalytic degradation of Norfloxacin … S Raj, AN Samanta Separation and Purification Technology 371, 133341 , 2025 2025.0 Citations: 15
Novel Zn/MoSe2 nanoflower with selenium vacancies for the effective charge separation, photo-electrochemical study and efficient visible-light degradation of Ciprofloxacin S Raj, Y Thakur, P Sardar, AN Samanta Advanced Powder Technology 36 (9), 105020 , 2025 2025.0 Citations: 4
Enhanced CO2 adsorption efficiency through aminoethylethanolamine functionalized porous ZIF-8 nanoparticles: Experimental investigations, isotherm and RSM modeling P Sardar, R Manna, G Bhattacharya, S Raj, S Yadav, S Rahut, ... Separation and Purification Technology 360, 131090 , 2025 2025.0 Citations: 13
Boosting CO 2 Uptake Potential of Amine Functionalized UiO-66 Nanoparticles Using Sonochemical Synthesis: Experimental Observations, Isotherm, Response … P Sardar, D Kumar, G Bhattacharya, R Manna, S Raj, S Rahut, ... Energy & Fuels 39 (25), 12086-12107 , 2025 2025.0 Citations: 5
Synthesis of n-type Zinc-doped metal dichalcogenide for efficient visible light photocatalytic degradation of Antibiotic and photo-electrochemical study S Raj, AN Samanta MDPI , 2025 2025.0
Construction of a novel Bi2S3/MIL-101 (Fe) Z-scheme heterojunction for the effective visible-light assisted photocatalytic degradation of tetracycline hydrochloride … S Raj, Y Chainy, P Sardar, AN Samanta Surfaces and Interfaces 60, 106011 , 2025 2025.0 Citations: 20
Synthesis of n-Type Metal Doped Molybdenum Diselenide for the Efficient Visible-Light Photocatalytic Degradation of an Antibiotic and Photo-Electrochemical Study S Raj, AN Samanta 2024 AIChE Annual Meeting , 2024 2024.0
Construction of a visible light responsive dual Z-scheme NH2-MIL-101 (Fe)/CdS/g-C3N4 ternary heterojunction photocatalyst for efficient CO2 photoreduction to methanol R Manna, G Bhattacharya, P Sardar, S Raj, A Jain, AN Samanta Chemical Engineering Science 288, 119811 , 2024 2024.0 Citations: 36
Spinel ZnMn2O4 nanosphere for the efficient Sulfamethazine degradation under visible light irradiation and photoelectrochemical study S Raj, R Manna, AN Samanta Journal of Environmental Chemical Engineering 12 (2), 112277 , 2024 2024.0 Citations: 27
Excellent CO2 adsorption performance of amine-impregnated highly porous ZIF-8 adsorbent: experimental and isotherm modeling studies P Sardar, G Bhattacharya, R Manna, S Raj, S Rahut, AN Samanta Advanced Powder Technology 35 (2), 104344 , 2024 2024.0 Citations: 25
Boosting photocatalytic CO2 reduction efficiency by graphene nanoflakes (GNF) decorated ZIF-67 under visible light irradiation R Manna, G Bhattacharya, S Raj, AN Samanta Journal of Environmental Chemical Engineering 12 (1), 111722 , 2024 2024.0 Citations: 31
Enhanced Electron Trapping Protocol of MIL-100 (Fe) via Different Synthetic Routes for the Effective Visible Light Degradation of Sulfamethazine S Raj, S Rahut, R Manna, AN Samanta Indian Chemical Engineering Congress, 663-684 , 2023 2023.0 Citations: 2
Box-behnken design for the photocatalytic degradation of sulfamethazine using Mil-100 (Fe) as a photocatalyst S Raj, AN Samanta Chemical Engineering Transactions 98, 129-134 , 2023 2023.0 Citations: 15
Loading of Tin sulfideover Metal Organic Framework for boosting visible-light photocatalytic degradation of Norfloxacin S Raj, AN Samanta
MOST CITED SCHOLAR PUBLICATIONS
Construction of a visible light responsive dual Z-scheme NH2-MIL-101 (Fe)/CdS/g-C3N4 ternary heterojunction photocatalyst for efficient CO2 photoreduction to methanol R Manna, G Bhattacharya, P Sardar, S Raj, A Jain, AN Samanta Chemical Engineering Science 288, 119811 , 2024 2024.0 Citations: 36
Boosting photocatalytic CO2 reduction efficiency by graphene nanoflakes (GNF) decorated ZIF-67 under visible light irradiation R Manna, G Bhattacharya, S Raj, AN Samanta Journal of Environmental Chemical Engineering 12 (1), 111722 , 2024 2024.0 Citations: 31
Spinel ZnMn2O4 nanosphere for the efficient Sulfamethazine degradation under visible light irradiation and photoelectrochemical study S Raj, R Manna, AN Samanta Journal of Environmental Chemical Engineering 12 (2), 112277 , 2024 2024.0 Citations: 27
Excellent CO2 adsorption performance of amine-impregnated highly porous ZIF-8 adsorbent: experimental and isotherm modeling studies P Sardar, G Bhattacharya, R Manna, S Raj, S Rahut, AN Samanta Advanced Powder Technology 35 (2), 104344 , 2024 2024.0 Citations: 25
Construction of a novel Bi2S3/MIL-101 (Fe) Z-scheme heterojunction for the effective visible-light assisted photocatalytic degradation of tetracycline hydrochloride … S Raj, Y Chainy, P Sardar, AN Samanta Surfaces and Interfaces 60, 106011 , 2025 2025.0 Citations: 20
Construction of a novel SnS2/MIL-88A (Fe) Z-scheme for boosting charge transfer assisted with peroxymonosulfate for the effective photocatalytic degradation of Norfloxacin … S Raj, AN Samanta Separation and Purification Technology 371, 133341 , 2025 2025.0 Citations: 15
Box-behnken design for the photocatalytic degradation of sulfamethazine using Mil-100 (Fe) as a photocatalyst S Raj, AN Samanta Chemical Engineering Transactions 98, 129-134 , 2023 2023.0 Citations: 15
Enhanced CO2 adsorption efficiency through aminoethylethanolamine functionalized porous ZIF-8 nanoparticles: Experimental investigations, isotherm and RSM modeling P Sardar, R Manna, G Bhattacharya, S Raj, S Yadav, S Rahut, ... Separation and Purification Technology 360, 131090 , 2025 2025.0 Citations: 13
Boosting CO 2 Uptake Potential of Amine Functionalized UiO-66 Nanoparticles Using Sonochemical Synthesis: Experimental Observations, Isotherm, Response … P Sardar, D Kumar, G Bhattacharya, R Manna, S Raj, S Rahut, ... Energy & Fuels 39 (25), 12086-12107 , 2025 2025.0 Citations: 5
Novel Zn/MoSe2 nanoflower with selenium vacancies for the effective charge separation, photo-electrochemical study and efficient visible-light degradation of Ciprofloxacin S Raj, Y Thakur, P Sardar, AN Samanta Advanced Powder Technology 36 (9), 105020 , 2025 2025.0 Citations: 4
Enhanced Electron Trapping Protocol of MIL-100 (Fe) via Different Synthetic Routes for the Effective Visible Light Degradation of Sulfamethazine S Raj, S Rahut, R Manna, AN Samanta Indian Chemical Engineering Congress, 663-684 , 2023 2023.0 Citations: 2
Synthesis of n-type Zinc-doped metal dichalcogenide for efficient visible light photocatalytic degradation of Antibiotic and photo-electrochemical study S Raj, AN Samanta MDPI , 2025 2025.0
Synthesis of n-Type Metal Doped Molybdenum Diselenide for the Efficient Visible-Light Photocatalytic Degradation of an Antibiotic and Photo-Electrochemical Study S Raj, AN Samanta 2024 AIChE Annual Meeting , 2024 2024.0
Loading of Tin sulfideover Metal Organic Framework for boosting visible-light photocatalytic degradation of Norfloxacin S Raj, AN Samanta
