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Issue 35, 2018
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Polystyrene-heterojunction semiconductor composite spheres prepared by a hydrothermal synthesis process: a recyclable photocatalyst under visible light irradiation for removing organic dyes from aqueous solution

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Abstract

A composite photocatalyst, with a BiOI/TiO2 heterojunction supported on carboxyl polystyrene spheres, was prepared using a two step hydrothermal reaction method. The products were characterized by X-ray diffraction, scanning electron microscopy and energy-dispersive X-ray spectroscopy. The results show that the polystyrene microspheres were covered with smaller-sized BiOI microspheres, while nano-sized TiO2 particles were deposited on the surface of the flower-like BiOI microspheres. As an internal electric field exists when BiOI is hybridized with TiO2, the photogenerated carriers could be separated effectively and the resulting composite photocatalyst PS/BiOI/TiO2 had better performance for degrading rhodamine B in aqueous solution under visible-light irradiation with a 40 W incandescent lamp than that of PS/BiOI. Meaningfully, the composite photocatalyst can be recycled easily by filtering.

Graphical abstract: Polystyrene-heterojunction semiconductor composite spheres prepared by a hydrothermal synthesis process: a recyclable photocatalyst under visible light irradiation for removing organic dyes from aqueous solution

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Publication details

The article was received on 01 Jun 2018, accepted on 26 Jul 2018 and first published on 27 Jul 2018


Article type: Paper
DOI: 10.1039/C8DT02246A
Citation: Dalton Trans., 2018,47, 12130-12137

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    Polystyrene-heterojunction semiconductor composite spheres prepared by a hydrothermal synthesis process: a recyclable photocatalyst under visible light irradiation for removing organic dyes from aqueous solution

    X. Guo, C. Qin, M. Zhu, J. Wang, J. Sun and L. Dai, Dalton Trans., 2018, 47, 12130
    DOI: 10.1039/C8DT02246A

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