Synergistic effect between orthorhombic α-Sulfur and TiO2 as co-photocatalysts for efficient degradation of methylene blue: A mechanistic approach

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Devi, L.G. and Arunakumari, M.L. (2014) Synergistic effect between orthorhombic α-Sulfur and TiO2 as co-photocatalysts for efficient degradation of methylene blue: A mechanistic approach. Journal of Molecular Catalysis A: Chemical, 391 (1). pp. 99-104. ISSN 13811169

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Official URL: https://doi.org/10.1016/j.molcata.2014.04.012

Abstract

The synergistic effects between α-Sulfur (α-S) and TiO 2 photocatalysts is studied under UV/solar light. An enhancement in photocatalytic activity was observed under UV light, due to formation of sulfate anions in the reaction mixture and these ions get adsorbed on TiO2 surface by electrostatic force of attraction or it may react with holes/hydroxyl radicals to generate sulfate radical anion. An increase in quantum efficiency is observed with sulfated TiO2 due to reduction in electron-hole recombination rate. The extended response of α-S under visible region is due to non-vertical absorption process, which paved a new way for elemental photocatalysis. © 2014 Elsevier B.V.

Item Type: Article
Additional Information: cited By 1
Uncontrolled Keywords: Aromatic compounds; Negative ions; Photocatalysis; Photocatalysts; Sulfur, Absorption process; Electron hole recombination rate; Photocatalytic activities; Reaction mixture; Sulfate anions; Sulfate radicals; Synergistic effect; TiO, Titanium dioxide
Subjects: Faculty of Science > Pure Sciences > Chemistry
Divisions: Jnana Bharathi / Central College Campus > Department of Chemistry
Depositing User: Mr. Kirana Kumar D
Date Deposited: 13 Apr 2016 07:04
Last Modified: 13 Apr 2016 07:04
URI: http://eprints-bangaloreuniversity.in/id/eprint/3215

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