Enhanced photocatalytic performance of Sn6SiO8 nanoparticles and their reduced graphene oxide (rGO) nanocomposite
Document Type
Article
Publication Date
9-1-2020
Abstract
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.
Keywords
Sn6SiO8/rGO nanocomposite, Hydrothermal method, Photocatalytic dye degradation
Divisions
nanotechnology
Publication Title
Journal of Nanoscience and Nanotechnology
Volume
20
Issue
9
Publisher
American Scientific Publishers
Publisher Location
26650 THE OLD RD, STE 208, VALENCIA, CA 91381-0751 USA