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Title: Low temperature one-step synthesis of rutile TiO{sub 2}/BiOCl composites with enhanced photocatalytic activity

The rutile TiO{sub 2}/BiOCl composites were successfully fabricated by a facile one-step hydrolysis method at low temperature (50 °C). The X-ray diffraction, scanning electron microscopy, transmission electron microscopy, UV–vis diffuse reflectance spectra, Fourier transform infrared spectroscopy, Brunauer–Emmett–Teller, and X-ray photoelectron spectroscopy measurements were employed to characterize the phase structures, morphologies, optical properties, surface areas, and electronic state of the samples. The rutile TiO{sub 2}/BiOCl composites exhibited higher photocatalytic activity than pure BiOCl and rutile TiO{sub 2} for the degradation of phenol under artificial solar light irradiation. In addition, the photocatalytic mechanism has also been investigated and discussed. The enhanced photocatalytic performance of rutile TiO{sub 2}/BiOCl composites is closely related to the heterojunctions between BiOCl and rutile TiO{sub 2}, which can not only broaden the light adsorption range of BiOCl but also improve the electron–hole separation efficiency under artificial solar light irradiation. - Highlights: • Rutile TiO{sub 2}/BiOCl was prepared by a low temperature one-step hydrolysis method. • The synthetic method is quite convenient and energy-saving. • The composites exhibit enhanced photocatalytic activity on phenol degradation. • The high photocatalytic activity relates to the heterojunctions of BiOCl and TiO{sub 2}.
Authors:
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Publication Date:
OSTI Identifier:
22476002
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Characterization; Journal Volume: 99; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ADSORPTION; BISMUTH COMPOUNDS; CHLORINE COMPOUNDS; COMPOSITE MATERIALS; FOURIER TRANSFORM SPECTROMETERS; HETEROJUNCTIONS; HYDROLYSIS; OPTICAL PROPERTIES; OXYGEN COMPOUNDS; PHENOL; PHOTOCATALYSIS; RUTILE; SCANNING ELECTRON MICROSCOPY; SPECTRA; SURFACE AREA; SYNTHESIS; TITANIUM OXIDES; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION; X-RAY PHOTOELECTRON SPECTROSCOPY