Synthesis and photocatalytic property of BiOBr/palygorskite composites

Journal Article · Tue Dec 31 23:00:00 EST 2013 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2013.08.068· OSTI ID:22341829

Liu, ZhangSheng ^[1]; Bi, YanHua ^[2]; Zhao, YuLong; Huang, Xu; Zhu, YaBo ^[1]

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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)

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.

• OSTI ID: 22341829
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 49; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

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