1. Development of a new efficient visible-light-driven photocatalyst from SnS2 and polyvinyl chloride.
- Author
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Zhang, Yongcai, Zhang, Fen, Yang, Zhanjun, Xue, Huaiguo, and Dionysiou, Dionysios D.
- Subjects
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VINYL chloride polymers , *PHOTOCATALYSTS , *CONJUGATED polymers , *X-ray photoelectron spectroscopy , *RAMAN spectroscopy - Abstract
This work reports the development of a new efficient visible-light-driven composite photocatalyst comprising SnS 2 nanoflakes and conjugated polymer (CPVC) from the dehydrochlorination of polyvinyl chloride (PVC). The optimum synthesis conditions were explored to obtain the most efficient SnS 2 /CPVC composite photocatalyst. The formation of SnS 2 /CPVC nanocomposites was confirmed by X-ray diffraction, X-ray photoelectron spectroscopy, Raman spectroscopy, high-resolution transmission electron microscopy, and elemental mapping characterization. The photocatalytic tests demonstrated that SnS 2 /CPVC nanocomposites exhibited not only far higher visible-light-driven photocatalytic activity than SnS 2 nanoflakes, but also good photocatalytic stability and reusability in the reduction of aqueous Cr(VI) under visible-light ( λ > 420 nm) irradiation. The mechanism underlying the improved photocatalytic efficiency of SnS 2 /CPVC nanocomposites was elucidated, based on comparison between the optical, photoelectric, and electrochemical properties of SnS 2 /CPVC nanocomposites and SnS 2 nanoflakes, as well as the matched electronic band structures between SnS 2 and CPVC. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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