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

E. S. Baeissa ^,

1.
Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203 Jeddah 21589, Saudi Arabia

Corresponding author: E. S. Baeissa,
Received Date: 1 February 2015
Available Online: 27 February 2015

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.
- Titanium dioxide,
- Sulfur-doping,
- Photocatalyst,
- Cyanide oxidation
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