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

Journal Article · Thu Jan 15 00:00:00 EST 2015 · Materials Characterization

DOI:https://doi.org/10.1016/J.MATCHAR.2014.11.002· OSTI ID:22476002

Duo, Fangfang; Wang, Yawen; Fan, Caimei; Mao, Xiaoming; Zhang, Xiaochao; Wang, Yunfang; Liu, Jianxin

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}.

• OSTI ID: 22476002
• Journal Information: Materials Characterization, Vol. 99; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1044-5803
• Country of Publication: United States
• Language: English

Related Subjects

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