In-situ synthesis of C3N4/CdS composites with enhanced photocatalytic properties

doi:10.1016/S1872-2067(14)60237-0

Abstract

Abstract:

A hybrid semiconductor composed of a carbon nitride/cadmium sulfide nanocomposite (C₃N₄/CdS) was synthesized by a template-free one-step calcination route at high temperature using ammonium thiocyanate and cadmium chloride as starting materials. The crystal structure, composition and morphology of the hybrid samples were studied by X-ray diffraction, Fourier transform infrared spectroscopy and transmission electron microscopy. The photocatalytic degradation of Rhodamine B as a model compound was carried out to evaluate the photocatalytic activity of the nanocomposites under visible light irradiation. Hexagonal CdS nanocrystals were uniformly distributed in the bulk C₃N₄. After coupling with CdS the basic C₃N₄ structure was mostly unchanged. The visible light absorption properties of the hybrid materials were enhanced. The as-prepared C₃N₄/CdS hybrid photocatalyst exhibited superior degradation performance under visible light irradiation compared with pure C₃N₄. The well-matched band energy improved the transfer efficiency of the photoinduced carriers and this was responsible for the enhanced photocatalytic activity and stability of the hybrid photocatalysts.

Key words: Carbon nitride, Cadmium sulfide, Photocatalysis, Degradation of pollutants

Yanjuan Cui . In-situ synthesis of C₃N₄/CdS composites with enhanced photocatalytic properties[J]. Chinese Journal of Catalysis, 2015, 36(3): 372-379.

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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(14)60237-0

https://www.cjcatal.com/EN/Y2015/V36/I3/372

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In-situ synthesis of C₃N₄/CdS composites with enhanced photocatalytic properties

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