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Molecules 2016, 21(5), 666;

BiOBr/BiOI Photocatalyst Based on Fly Ash Cenospheres with Improved Photocatalytic Performance

1,2,* , 2
School of Chemical and Environmental Engineering, Hunan City University, Yiyang 413000, China
School of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
Shanghai Institute of Technology, Shanghai 200235, China
Authors to whom correspondence should be addressed.
Academic Editor: Derek J. McPhee
Received: 27 March 2016 / Revised: 8 May 2016 / Accepted: 16 May 2016 / Published: 19 May 2016
(This article belongs to the Section Photochemistry)
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A series of BiOBr/BiOI photocatalysts supported on fly-ash cenospheres (FACs) were successfully prepared via a facile one-pot alcoholysis method. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectrometer (XPS) and UV-visible diffuse reflectance spectroscopy (DRS). The results indicate that pH value plays a critical role in BiOBr/BiOI loading. Based on the photodegradation tests under visible light irradiation (blue LED irradiation), the photocatalytic property of BiOBr/BiOI/FACs photocatalysts obtained under alkaline conditions is superior to that prepared under neutral or acidic conditions, and higher than those of BiOB/FACs and BiOI//FACs. The improved photocatalytic performance of BiOBr/BiOI/FACs can be attributed to more BiOBr/BiOI loaded on the surface of FACs and the efficient photogenerated electron-hole separation. View Full-Text
Keywords: BiOBr/BiOI; fly-ash cenospheres; photocatalytic activity; pH value BiOBr/BiOI; fly-ash cenospheres; photocatalytic activity; pH value

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Lin, L.; Huang, M.; Chen, D. BiOBr/BiOI Photocatalyst Based on Fly Ash Cenospheres with Improved Photocatalytic Performance. Molecules 2016, 21, 666.

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