title: Controlled hydrothermal synthesis of BiOxCly/BiOmIn composites exhibiting visible-light photocatalytic degradation of crystal violet.
abstract: A series of BiOxCly/BiOmIn composites were prepared using autoclave hydrothermal methods. The composition and morphologies of the BiOxCly/BiOmIn composites were controlled by adjusting the experimental conditions: the reaction pH value, temperature, and KCl/KI molar ratio. The products were characterized using X-ray diffraction, scanning electron microscopy-electron dispersive X-ray spectroscopy, UV-vis diffuse reflectance spectroscopy, Brunauer-Emmett-Teller specific surface areas, cathodoluminescence, high-resolution transmission electron microscopy, and high-resolution X-ray photoelectron spectroscopy. The photocatalytic efficiencies of composite powder suspensions were evaluated by monitoring the crystal violet (CV) concentrations. In addition, the quenching effects of various scavengers indicated that the reactive O2(-) played a major role, and OH or h(+) played a minor role in CV degradation. The intermediates formed during the decomposition process were isolated, identified, and characterized using high performance liquid chromatography-photodiode array-electrospray ionization-mass spectrometry to elucidate the CV decomposition mechanism.
authors.affiliation: Department of Science Application and Dissemination, National Taichung University of Education, Taichung 403, Taiwan, ROC.
authors.forename: Yu-Rou
authors.initials: YR
authors.lastname: Jiang
authors.affiliation: Department of Science Application and Dissemination, National Taichung University of Education, Taichung 403, Taiwan, ROC.
authors.forename: Ho-Pan
authors.initials: HP
authors.lastname: Lin
authors.affiliation: Department of Plant Pathology, National Chung Hsing University, Taichung 402, Taiwan, ROC.
authors.forename: Wen-Hsin
authors.initials: WH
authors.lastname: Chung
authors.affiliation: Department of Science Application and Dissemination, National Taichung University of Education, Taichung 403, Taiwan, ROC.
authors.forename: Yong-Ming
authors.initials: YM
authors.lastname: Dai
authors.affiliation: Department of Plant Pathology, National Chung Hsing University, Taichung 402, Taiwan, ROC.
authors.forename: Wan-Yu
authors.initials: WY
authors.lastname: Lin
authors.affiliation: Department of Science Application and Dissemination, National Taichung University of Education, Taichung 403, Taiwan, ROC. Electronic address: ccchen@ms3.ntcu.edu.tw.
authors.forename: Chiing-Chang
authors.initials: CC
authors.lastname: Chen
mesh_terms: D004396:Coloring Agents / Q000737:chemistry; D005840:Gentian Violet / Q000737:chemistry*; D008027:Light; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D055668:Photochemical Processes; D056951:Photoelectron Spectroscopy; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D004396:Coloring Agents; D014874:Water Pollutants, Chemical; D005840:Gentian Violet
keywords: BiO(x)Cl(y)/BiO(m)I(n); Composites; Crystal violet; Hydrothermal synthesis; Photocatalysis