TiO₂-Based Composite Film for the Photodegradation of Methyl Green

Abstract:

A simple process was developed for preparation of highly photoactive Fe and S codoped TiO₂-SiO₂-ZnO composite film. The Brunauer–Emmett–Teller (BET) surface area results showed that the specific surface area of the composite TiO₂ sample was 432.5m²g^-1, while that of the pure TiO₂ was 103.4m²g^-1. The diffuse reflectance measurements exhibited an extension of light absorption into the visible region for the composite TiO₂. The photoluminescence (PL) spectra analysis indicated that the electron-hole recombination rate was effectively inhibited in the composite TiO₂. The photocatalytic activities of the TiO₂ films were evaluated by the photocatalytic decomposition of methyl green in aqueous solution. The composite TiO₂ film exhibited excellent photocatalytic activities compared to pure TiO₂ film.

• Periodical: Advanced Materials Research (Volumes 989-994)
• Pages: 224-227
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.989-994.224
• Online since: July 2014
• Authors: Na Song, Fang Li, Ming Ming Yao*
• Keywords: Composite Film, Photodegradation, TiO₂-based

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