Enhanced Solid‐Phase Photocatalytic Degradation Activity of a Poly(vinyl chloride)‐TiO2 Nanocomposite Film with Bismuth Oxyiodide |
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| Authors: | C Yang K Deng T Peng L Zan |
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| Affiliation: | 1. College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, China;2. Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission and Ministry of Education, South‐Central University for Nationalities, Wuhan, China |
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| Abstract: | A new type of photodegradable poly(vinyl chloride)‐bismuth oxyiodide/TiO2 (PVC‐BiOI/TiO2) nanocomposite film was prepared by embedding a nano‐TiO2 photocatalyst modified by BiOI into the commercial PVC plastic. The solid‐phase photocatalytic degradation behavior of the as‐prepared film was investigated in ambient air at room temperature under UV light irradiation, with the aid of UV‐Vis spectroscopy, weight loss monitoring, scanning electron microscopy, and FT‐IR spectroscopy. Compared to the PVC‐TiO2 nanocomposite film, the PVC‐BiOI nanocomposite film and the pure PVC film, the PVC‐BiOI/TiO2 nanocomposite film exhibited a higher photocatalytic degradation activity. The optimal mass ratio of BiOI to TiO2 was found to be 0.75 %. The weight loss rate of the PVC‐BiOI/TiO2 nanocomposite film reached 30.8 % after 336 h of irradiation, which is 1.5 times higher than that of the PVC‐TiO2 nanocomposite film under identical conditions. The solid‐phase photocatalytic degradation mechanism of the nanocomposite films was briefly discussed. |
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| Keywords: | Bismuth Oxyiodide Nano‐TiO2 Poly(vinyl chloride) Solid‐phase photocatalytic degradation |
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