Photo-Oxidation of Rhodamine-6-G via TiO2and Au/TiO2-Bound Polythene Beads

Author:

Elfeky Souad A.12,Al-Sherbini Al-Sayed A.1

Affiliation:

1. Department of Laser Applications in Metrology, Photochemistry and Agriculture (LAMPA), National Institute of Laser Enhanced Science (NILES), Cairo University, Cairo 12613, Egypt

2. Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK

Abstract

It is very important to improve the efficiency of water detoxification techniques. In this study, TiO2or gold-TiO2(Au/TiO2) nanocomposite-bound polythene beads were used for the photo-oxidation of rhodamine 6G (R6G) as a model of water organic pollutants. Simple thermal procedures were employed for anchoring TiO2or Au/TiO2nanocomposites to polythene beads. The results revealed that the synthesized Au/TiO2composites exhibited both considerably higher absorption capability of organic pollutants and better photocatalytic activity for the photo-oxidation of R-6G than pure titania. The better photocatalytic activity of the synthesized Au/TiO2composites film than that of the pure titania film was attributed to high capacity of light absorption intensity and easy diffusion of absorbed pollutants on the absorption sites to photogenerated oxidizing radicals on the photoactive sites.

Funder

National Institute of Laser Enhanced Sciences, Cairo University

Publisher

Hindawi Limited

Subject

General Materials Science

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