Visible Light Photocatalytic Degradation PVC/B-F Co-Doped TiO2 Composite

Abstract:

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The B-F codoped nano-TiO2 powders were prepared by the sol-gel method. The surface of powders was modified by stearic acid. The visible light photodegradable PVC/B-F codoped nano-TiO2 composite films were prepared by tape casting processing. Solid-phase visible light photocatalytic degradation of the films were investigated with a 1000W xenon lamp and a ZJB 420 filter glass was used to cut off light of wavelength <420 nm. The weight-loss measurement, SEM, DSC of films were detected. Results showed that the weight loss of PVC/B-F codoped nano-TiO2 composite film (2%TiO2 w/w) is 16.9% after 120h UV irradiation, which is notably higher than that of both the pure PVC film and the PVC/nano-TiO2 composite film. Glass transition (Tg) is appeared for samples after 72h irradiation, and the Tg of PVC/B-F codoped nano-TiO2 composite film is the lowest of all samples. The surface of PVC/B-F codoped nano-TiO2 composite film was destroyed obviously by SEM photo.

Info:

Periodical:

Advanced Materials Research (Volumes 239-242)

Edited by:

Zhong Cao, Xueqiang Cao, Lixian Sun, Yinghe He

Pages:

2015-2018

DOI:

10.4028/www.scientific.net/AMR.239-242.2015

Citation:

Z. H. Zhang et al., "Visible Light Photocatalytic Degradation PVC/B-F Co-Doped TiO2 Composite", Advanced Materials Research, Vols. 239-242, pp. 2015-2018, 2011

Online since:

May 2011

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$35.00

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