Indian Journal of Pure and Applied Physics

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Adsorption of RB dye by Ce and Er Doped SnO2 Photocatalysts for Water Remediation


Affiliations
1 Department of Physics, Maharshi Dayanand University, Rohtak, Haryana 124 001, India
2 Department of Physics, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, Haryana 131 039, India
3 Department of Physics, Netaji Subhas University of Technology, New Dehli 110 078, India
4 Department of Physics, J. C. Bose University of Science and Technology, YMCA, Faridabad, Haryana 121 006, India
 

This study focuses on synthesis of pure SnO2 nanoparticles and SnO2 nanoparticles doped with Erbium (Er) at 7% and Cerium (Ce) at 7% using sol-gel method. The aim was to evaluate their photocatalytic performance in degrading the harmful Rose bengal dye. XRD analysis confirmed that both undoped and rare earth-doped SnO2 nanoparticles exhibited a tetragonal rutile structure. Photoluminescence (PL) analysis revealed an increase in oxygen vacancy concentration with higher dopant incorporation. Furthermore, band gap of doped SnO2 nanoparticles was reduced compared to pure SnO2. The reduction in the band gap was primarily attributed to creation of vacancy defects caused by dopants. Photocatalytic experiments demonstrated that within 60 minutes of UV light exposure, Er 7% doped SnO2 nanoparticles achieved the degradation of 95.32% of Rose bengal dye. These findings highlight the potential of Er 7% doped SnO2 as a highly effective catalyst for large-scale degradation of industrial waste, specifically organic dyes.

Keywords

Adsobption, Photocatalysis, Photoluminescence, Dye Degradation; Rare Earth.
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  • Kumari H, Sonia, Chahal S, Suman, Kumar P, Kumar A & Parmar R, Mater Sci Eng B, 234 (2023) 116654.

  • Kumari H, Sonia, Suman, Ranga R, Chahal S, Devi S, Sharma S, Kumar S, Kumar P, Kumar S, Kumar A & Parmar R, Water Air Soil Pollut, 234 (2023) 349.

  • Bhawana, Kumar S, Sharma R, Gupta A, Tyagi A, Singh P, Kumar A & Kumar V, New J Chem, 46 (2022) 4014.

  • Sonia, Kumari H, Suman, Chahal S, Devi S, Kumar S, Kumar P & Kumar A, Appl Phys A Mater Sci Proc, 129 (2023) 91.

  • Singh G, Virpal & Singh R C, Sens Actuators B Chem, 282 (2019) 373.

  • Divya J, Pramothkumar A, Gnanamuthu S J, Victoria D C B & Prabakar P C J, Phys B: Condens Matter, 588 (2020) 412169.

  • Kumar V, Uma S & Nagarjan R, Turk J Phys, 38 (2014) 450.

  • Kumar V, Bhawna, Yadav S K, Gupta A, Dwivedi B, Kumar A, Singh P & Deori K, Energy Environ Sci, 4 (2019) 3722.

  • Chahal S, Rani N, Kumar A & Kumar P, Vacuum, 172 (2020) 109075.


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  • Adsorption of RB dye by Ce and Er Doped SnO2 Photocatalysts for Water Remediation

Abstract Views: 37  |  PDF Views: 21

Authors

Harita Kumari
Department of Physics, Maharshi Dayanand University, Rohtak, Haryana 124 001, India
Sonia .
Department of Physics, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, Haryana 131 039, India
Sourabh Sharma
Department of Physics, Netaji Subhas University of Technology, New Dehli 110 078, India
Parmod Kumar
Department of Physics, J. C. Bose University of Science and Technology, YMCA, Faridabad, Haryana 121 006, India
Ashok Kumar
Department of Physics, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, Haryana 131 039, India
Rajesh Parmar
Department of Physics, Maharshi Dayanand University, Rohtak, Haryana 124 001, India

Abstract


This study focuses on synthesis of pure SnO2 nanoparticles and SnO2 nanoparticles doped with Erbium (Er) at 7% and Cerium (Ce) at 7% using sol-gel method. The aim was to evaluate their photocatalytic performance in degrading the harmful Rose bengal dye. XRD analysis confirmed that both undoped and rare earth-doped SnO2 nanoparticles exhibited a tetragonal rutile structure. Photoluminescence (PL) analysis revealed an increase in oxygen vacancy concentration with higher dopant incorporation. Furthermore, band gap of doped SnO2 nanoparticles was reduced compared to pure SnO2. The reduction in the band gap was primarily attributed to creation of vacancy defects caused by dopants. Photocatalytic experiments demonstrated that within 60 minutes of UV light exposure, Er 7% doped SnO2 nanoparticles achieved the degradation of 95.32% of Rose bengal dye. These findings highlight the potential of Er 7% doped SnO2 as a highly effective catalyst for large-scale degradation of industrial waste, specifically organic dyes.

Keywords


Adsobption, Photocatalysis, Photoluminescence, Dye Degradation; Rare Earth.

References