Abstract
AbstractA novel photodegradable poly(vinyl chloride)‐polyoxometalate/TiO2 (PVC‐POM/TiO2) nanocomposite film was prepared by embedding nano‐TiO2 photocatalyst modified by POM into the commercial PVC plastic. The solid‐phase photocatalytic degradation behavior of as‐prepared film under UV light irradiation was investigated and compared with those of the PVC‐TiO2 film and the pure PVC film, with the aid of FTIR spectroscopy, scanning electron microscopy (SEM), and weight loss monitoring. The results show that PVC‐POM/TiO2 nanocomposite film has a high photocatalytic activity. The optimal ratio of POM to TiO2 is found to be 2 wt %, the degradation rate of PVC‐POM/TiO2 film is 1.5 times higher than that of PVC‐TiO2 film under the identical conditions. The enhancement of photocatalytic activity is due to the achievement of a rapid photogenerated charge separation with the assistance of POM which can mediate photogenerated electron transfering from TiO2 conduction band to dioxygen. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
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