Abstract
An efficient visible light photocatalyst has been prepared from TiO2 nanoparticles and a partly conjugated polymer derived from polyvinyl chloride (PVC). It was characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), UV–visible diffuse reflectance spectroscopy (UV–Vis DRS), Fourier-transform infrared spectroscopy (FT-IR), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). The visible light photocatalytic activity of the as-prepared photocatalyst was evaluated by the photocatalytic degradation of Rhodamine B (RhB) under visible light irradiation. The XPS, FT-IR, and Raman spectra show that the partly conjugated polymer derived from PVC exists on the surface of the TiO2 nanoparticles. The UV–Vis DRS, XRD, and TEM results reveal that the modification of the partly conjugated polymer can obviously improve the absorbance of the TiO2 nanoparticles in the range of visible light and hardly affect their size and crystallinity. The visible light photocatalytic activity of the as-prepared TiO2 nanocomposites is higher than that of commercial TiO2 (Degussa P25) and comparable with those of visible light photocatalysts reported in the literature. Their visible light photocatalytic stability is also good. The reasons for their excellent visible light photocatalytic activity and the major factors affecting their photocatalytic activity are discussed.
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This study was supported by The National Natural Science Foundation of China (No.51002044) and Natural Science Foundation of Hebei Province (No. B2010000846 and B2011208006).
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Wang, D., Shi, L., Luo, Q. et al. An efficient visible light photocatalyst prepared from TiO2 and polyvinyl chloride. J Mater Sci 47, 2136–2145 (2012). https://doi.org/10.1007/s10853-011-6014-6
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DOI: https://doi.org/10.1007/s10853-011-6014-6