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Synthesis and characterization of sulfur-titanium dioxide nanocomposites for photocatalytic oxidation of cyanide using visible light irradiation

E. S. Baeissa

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引用本文: E. S. Baeissa. Synthesis and characterization of sulfur-titanium dioxide nanocomposites for photocatalytic oxidation of cyanide using visible light irradiation[J]. 催化学报, 2015, 36(5): 698-704. doi: 10.1016/S1872-2067(14)60320-X shu
Citation:  E. S. Baeissa. Synthesis and characterization of sulfur-titanium dioxide nanocomposites for photocatalytic oxidation of cyanide using visible light irradiation[J]. Chinese Journal of Catalysis, 2015, 36(5): 698-704. doi: 10.1016/S1872-2067(14)60320-X shu

Synthesis and characterization of sulfur-titanium dioxide nanocomposites for photocatalytic oxidation of cyanide using visible light irradiation

    通讯作者: E. S. Baeissa
摘要: A sol-gel method was used to prepare TiO2 and sulfur-TiO2 (S-TiO2) nanocomposites, which were characterized by N2 adsorption-desorption, X-ray diffraction, X-ray photoelectron spectroscopy, photoluminescene, ultraviolet visible and transmission electron microscopy measurements. The photocatalytic performance of TiO2 and S-TiO2 nanocomposites, with respect to the photocatalytic oxidation of cyanide under visible light irradiation, was determined. The results reveal that S is well dispersed on the surface of TiO2 nanoparticles. Additionally, the surface area of the S-TiO2 nanocomposites was observed to be smaller than that of the TiO2 nanoparticles because of blocked pores caused by doping with S. The S-TiO2 nanocomposite (0.3 wt% S) exhibited the lowest band gap and the highest photocatalytic activity in the oxidation of cyanide. The photocatalytic performance of S-TiO2 (0.3 wt% S) nanocomposites was stable, even after the fifth reuse of the nanoparticles for the oxidation of cyanide.

English

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  • 发布日期:  2015-05-20
  • 收稿日期:  2015-02-01
  • 网络出版日期:  2015-02-27
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