The role of water in photocatalytic dissociation of methanol on rutile TiO2(110)-(1×1)

doi:10.1016/S1872-2067(14)60006-1

Abstract

Abstract:

We have performed a surface photocatalysis study of the molecularly adsorbed forms of methanol on a vacuum-annealed rutile TiO₂(110)-(1×1) surface using temperature-programmed desorption both with and without coadsorbed water to investigate the effect of water and methanol on the photocatalytic dissociation of each other on rutile TiO₂(110)-(1×1). Our experimental results show conclusively that methanol has no effect on photocatalytic water splitting with water covered rutile TiO₂(110)-(1×1) surface. Further experimental results also show that water does not affect the process of photocatalytic methanol dissociation but does suppress photo-induced desorption of the formaldehyde product of methanol photocatalysis and can enhance the formation of the methyl formate product.

Key words: Methanol, Water, Rutile TiO₂(110)-(1×1), Photocatalysis, Temperature-programmed desorption, Formaldehyde

Chenbiao Xu, Wenshao Yang, Qing Guo, Dongxu Dai, Maodu Chen, Xueming Yang. The role of water in photocatalytic dissociation of methanol on rutile TiO₂(110)-(1×1)[J]. Chinese Journal of Catalysis, 2014, 35(3): 416-422.

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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(14)60006-1

https://www.cjcatal.com/EN/Y2014/V35/I3/416

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The role of water in photocatalytic dissociation of methanol on rutile TiO₂(110)-(1×1)

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