Haiou Liang, Chunping Li, J. Bai
May 1, 2015
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0
Influential Citations
10
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Journal
Advanced Powder Technology
Abstract
Abstract Four-component calcium metasilicate (CaSiO 3 )-loaded Ag–AgX/TiO 2 (X = Cl, Br, I) photocatalysts were fabricated by chemical precipitation, photoreduction and physical adsorption processes. Calcium metasilicate material was obtained in our previous work. This is first reported Ag–AgX/TiO 2 /CaSiO 3 (X = Cl, Br, I) composites which were employed according our plans. The surface structure and morphology of as-prepared products were conducted by scanning electron microscope (SEM); the valence state of Ag element in Ag–AgX–TiO 2 (X = Cl, Br, I) were confirmed by the analysis of X-ray photoelectron spectroscopy (XPS). The optical properties of Ag–AgX–TiO 2 /CaSiO 3 (X = Cl, Br, I) were investigated by UV–vis spectrophotometer. The visible light photocatalytic for degradation of polycyclic aromatic hydrocarbonsmethyl (MO, sodium fluorescein (NaFI) and ethyl rhodamine B (ERB)), the experimental results showed that the Ag–AgX–TiO 2 /CaSiO 3 (X = Cl, Br, I) possessed high activity for the three organics under visible light irritation ( λ > 400 nm). The novel composite photocatalysts have profound potential applications in dealing with environmental pollutants.