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Title: Synthesis and photocatalytic property of BiOBr/palygorskite composites

Graphical abstract: - Highlights: • BiOBr/palygorskite composite photocatalysts were prepared for the first time. • The synchronous role of adsorbability and photocatalytic oxidation was studied. • BiOBr/palygorskite composite exhibit enhanced photocatalytic activities. • The optimal ratio of [Bi]/palygorskite was identified. - Abstract: BiOBr/palygorskite composite photocatalysts were prepared by a hydrothermal method for the first time, which were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transformed infrared spectroscopy (FTIR), N{sub 2}-sorption and UV–vis diffuse reflectance spectroscopy. The photocatalytic activity of the as-prepared samples was evaluated by decomposition of methyl orange (MO) under visible light irradiation. The results revealed that BiOBr/palygorskite composites had strong photoabsorption in the visible light region. All BiOBr/palygorskite composites possessed higher photocatalytic activity than pure BiOBr. The highest activity was obtained by S5.0 sample. The enhanced photocatalytic performance was attributed to strong photoabsorption, the synchronous role of adsorbability and photocatalytic oxidation on BiOBr/palygorskite composites and the efficient separation of photogenerated electron–hole pairs.
Authors:
 [1] ;  [2] ; ; ;  [1]
  1. School of Material Science and Engineering, China University of Mining and Technology, XuZhou 221116 (China)
  2. State Grid ShanXi Electric Power Corporation Metering Center, TaiYuan 030001 (China)
Publication Date:
OSTI Identifier:
22341829
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 49; Other Information: Copyright (c) 2013 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; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; DECOMPOSITION; FOURIER TRANSFORM SPECTROMETERS; FOURIER TRANSFORMATION; HYDROTHERMAL SYNTHESIS; INFRARED SPECTRA; IRRADIATION; OXIDATION; PHOTOCATALYSIS; SCANNING ELECTRON MICROSCOPY; SPECTROSCOPY; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION