Additive SnO₂-ZnO Composite Films for Photocatalytic Degradation Efficiency of Organic Dye

Abstract:

SnO₂-ZnO composite films were employed as photocatalytic degradation of organic dye. SnO₂ and ZnO were mixed in polyethylene glycol solution with various weight ratios of SnO₂. The composite paste was screened onto glass substrate with active area of 1 cm² and annealed at 400 °C. The photocatalytic activity of composite films for the degradation of Eosin-Y dye was investigated under UV light irradiation. It was found that the normalized absorbance of dye solution decreased after treatment indicated that dye molecules were reduced. The composite films showed better degradation efficiency than conventional ZnO films due to reduced recombination encourage longer reaction time of electron and hole with surrounded environment. The optimized weight ratio of 30% showed the highest degradation rate constant and the lowest half lift.

• Periodical: Key Engineering Materials (Volumes 675-676)
• Pages: 205-208
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.675-676.205
• Online since: January 2016
• Authors: Supphadate Sujinnapram, Sasimonton Moungsrijun*
• Keywords: Degradation, Photocatalyst, SnO₂-ZnO, UV

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