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Issue 6, 2014
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Bi2WO6: A highly chemoselective visible light photocatalyst toward aerobic oxidation of benzylic alcohols in water

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Abstract

Photocatalytic selective organic transformation in water using visible light as the driving force represents an environmentally benign strategy for synthesis of fine chemicals under the framework of green chemistry. We herein report the photocatalytic aerobic oxidation of benzylic alcohols to corresponding aldehydes with high selectivity in water over a flower-like Bi2WO6 semiconductor using oxygen as an oxidant under visible light irradiation and mild conditions. A collection of joint techniques, in terms of electron spin resonance (ESR) spectra and controlled experiments using radicals scavengers, have been employed to explain the origin of the high selectivity for oxidation of benzylic alcohols achieved over the flower-like Bi2WO6 photocatalyst in an aqueous phase. The possible reaction mechanism for photocatalytic selective oxidation of alcohols over Bi2WO6 has also been discussed.

Graphical abstract: Bi2WO6: A highly chemoselective visible light photocatalyst toward aerobic oxidation of benzylic alcohols in water

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Publication details

The article was received on 04 Nov 2013, accepted on 25 Nov 2013 and first published on 27 Nov 2013


Article type: Paper
DOI: 10.1039/C3RA46383D
Citation: RSC Adv., 2014,4, 2904-2910
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    Bi2WO6: A highly chemoselective visible light photocatalyst toward aerobic oxidation of benzylic alcohols in water

    Y. Zhang and Y. Xu, RSC Adv., 2014, 4, 2904
    DOI: 10.1039/C3RA46383D

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