Preparation and characterization of ZnO/ZnS hybrid photocatalysts via microwave-hydrothermal method

ZHAO Jinglian1, WANG Xinping1, ZHAO Liang2

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PDF(139 KB)
Front. Environ. Sci. Eng. ›› 2008, Vol. 2 ›› Issue (4) : 415-420. DOI: 10.1007/s11783-008-0056-2

Preparation and characterization of ZnO/ZnS hybrid photocatalysts via microwave-hydrothermal method

  • ZHAO Jinglian1, WANG Xinping1, ZHAO Liang2
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Abstract

The photocatalytic performance of ZnO/ZnS hybrid nanocomposite was largely higher than that of the mere ZnO or ZnS nanoparticles, but the complicated procedure and misdistribution of final products limited its large-scale productions. The exploration of a novel synthesis route of ZnO/ZnS hybrid photocatalysts with high catalytic performance is becoming a crucial step for the large-scale application of ZnO/ZnS hybrid photocatalytic technique. Preparation and characterization of nanosized ZnO/ZnS hybrid photocatalysts were studied in this paper. The photocatalysts were obtained via microwave-hydrothermal crystallization with the help of sodium citrate. The products were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), particle size distribution (PSD), and Fourier transformed infrared spectroscopy (FT-IR). The results indicated that so-synthesized ZnO/ZnS samples consisted of the high pure cubic (sphalerite) ZnS and hexagonal ZnO nanocrystallines with a narrow particle size distribution. The possible formation mechanisms of ZnO/ZnS nanocrystallines were mainly attributed to the superficially protective effect of citrate. The photocatalytic experiments demonstrated that the ZnO/ZnS photocatalysts exhibited a higher catalytic activity for the degradation of acid fuchsine than other monocomponents.

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ZHAO Jinglian, WANG Xinping, ZHAO Liang. Preparation and characterization of ZnO/ZnS hybrid photocatalysts via microwave-hydrothermal method. Front.Environ.Sci.Eng., 2008, 2(4): 415‒420 https://doi.org/10.1007/s11783-008-0056-2

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