Enhanced photocatalytic performance of Sn6SiO8 nanoparticles and their reduced graphene oxide (rGO) nanocomposite

Gnanamoorthy, G. and Muthukumaran, M. and Prasath, P. Varun and Karthikeyan, V and Narayanan, V and Sagadevan, Suresh and Umar, Ahmad and Khan, M. Ajmal and Algarni, H. (2020) Enhanced photocatalytic performance of Sn6SiO8 nanoparticles and their reduced graphene oxide (rGO) nanocomposite. Journal of Nanoscience and Nanotechnology, 20 (9). pp. 5426-5432. ISSN 1533-4880, DOI https://doi.org/10.1166/jnn.2020.17814.

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Photocatalysts provide excellent potential for the full removal of organic chemical pollutants as an environmentally friendly technology. It has been noted that under UV-visible light irradiation, nanostructured semiconductor metal oxides photocatalysts can degrade different organic pollutants. The Sn6SiO8/rGO nanocomposite was synthesized by a hydrothermal method. The Sn6SiO8 nanoparticles hexagonal phase was confirmed by XRD and functional groups were analyzed by FT-IR spectroscopy. The bandgap of Sn6SiO8 nanoparticles (NPs) and Sn6SiO8/GO composites were found to be 2.7 eV and 2.5 eV, respectively. SEM images of samples showed that the flakes like morphology. This Sn6SiO8/rGO nanocomposite was testing for photocatalytic dye degradation of MG under visible light illumination and excellent response for the catalysts. The enhancement of photocatalytic performance was mainly attributed to the increased light absorption, charge separation efficiency and specific surface area, proved by UV-vis DRS. Further, the radical trapping experiments revealed that holes (h(+)) and superoxide radicals (O-center dot(2)-) were the main active species for the degradation of MG, and a possible photocatalytic mechanism was discussed.

Item Type: Article
Uncontrolled Keywords: Sn6SiO8/rGO nanocomposite; Hydrothermal method; Photocatalytic dye degradation
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
Divisions: Deputy Vice Chancellor (Research & Innovation) Office > Nanotechnology & Catalysis Research Centre
Depositing User: Ms Zaharah Ramly
Date Deposited: 30 Nov 2023 06:05
Last Modified: 30 Nov 2023 06:05
URI: http://eprints.um.edu.my/id/eprint/36431

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