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7903085 
Journal Article 
Photoelectrochemical Catalysis toward Selective Anaerobic Oxidation of Alcohols 
Zhang, R; Shao, M; Li, Z; Ning, F; Wei, M; Evans, DG; Duan, X 
2017 
Yes 
Chemistry: A European Journal
ISSN: 0947-6539
EISSN: 1521-3765 
Wiley-VCH Verlag 
23 
34 
8142-8147 
English 
28485855 
WOS:000403570500007 
Selective oxidation of alcohols to aldehydes plays an important role in perfumery, pharmaceuticals, and agrochemicals industry. Different from traditional catalysis or photocatalytic process, here we report an effective photoelectrochemical (PEC) approach for selective anaerobic oxidation of alcohols accompanied with H2 production by means of solar energy. By using TiO2 nanowires modified with graphitic carbon layer as photoanode, benzyl alcohol (BA) has been oxidized to benzaldehyde with high efficiency and selectivity (>99 %) in aqueous media at room temperature, superior to individual electrocatalytic or photocatalytic processes. Moreover, this PEC synthesis method can be effectively extended to the oxidation of several other aryl alcohols to their corresponding aldehydes under mild conditions. The electron spin resonance (ESR) results indicate the formation of intermediate active oxygen (O2.- ) on the photoanode, which further reacts with alcohols to produce final aldehyde compounds. 
alcohols oxidization; green synthesis; photoelectrochemical water splitting; TiO2 nanowire arrays