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Enhanced Solid‐Phase Photocatalytic Degradation Activity of a Poly(vinyl chloride)‐TiO 2 Nanocomposite Film with Bismuth Oxyiodide
Author(s) -
Yang C.,
Deng K.,
Peng T.,
Zan L.
Publication year - 2011
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201000450
Subject(s) - nanocomposite , photocatalysis , materials science , vinyl chloride , chemical engineering , degradation (telecommunications) , scanning electron microscope , bismuth , phase (matter) , composite material , nuclear chemistry , organic chemistry , chemistry , polymer , catalysis , copolymer , metallurgy , telecommunications , computer science , engineering
A new type of photodegradable poly(vinyl chloride)‐bismuth oxyiodide/TiO 2 (PVC‐BiOI/TiO 2 ) nanocomposite film was prepared by embedding a nano‐TiO 2 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‐TiO 2 nanocomposite film, the PVC‐BiOI nanocomposite film and the pure PVC film, the PVC‐BiOI/TiO 2 nanocomposite film exhibited a higher photocatalytic degradation activity. The optimal mass ratio of BiOI to TiO 2 was found to be 0.75 %. The weight loss rate of the PVC‐BiOI/TiO 2 nanocomposite film reached 30.8 % after 336 h of irradiation, which is 1.5 times higher than that of the PVC‐TiO 2 nanocomposite film under identical conditions. The solid‐phase photocatalytic degradation mechanism of the nanocomposite films was briefly discussed.