Preparation of visible light-driven SnS2/TiO2 nanocomposite photocatalyst for the reduction of aqueous Cr(VI)
作者： Jing Li , Tianxi Wang , Xihua Du
DOI: 10.1016/J.SEPPUR.2012.09.014
关键词:
摘要: Abstract SnS 2 /TiO nanocomposites with adjustable TiO contents were prepared via solvothermal treatment of different amounts tetrabutyl titanate in the presence nanoparticles mixed solvents ethanol and acetic acid at 180 °C for 12 h. The structures, compositions, BET specific surface areas optical properties as-prepared products characterized by X-ray diffraction, energy dispersive spectroscopy, transmission electron microscopy, high resolution N adsorption UV–Vis diffuse reflectance spectra, their photocatalytic tested reduction aqueous Cr(VI) under visible light ( λ > 420 nm) irradiation. It was found that activities depended on -B containing 25.5 mass% not only displayed highest activity, but also exhibited a good stability. Meanwhile, reasons accounting results discussed. Besides, photoelectron spectroscopy analysis revealed reduced to Cr(III) after reactions over -B.
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