A Study of Loaded Photocatalysts with Precious Metal on the Photocatalytic Hydrolysis Reaction of Propyne(Ⅲ)

Abstract

Abstract: Three different loaded methods were used to prepare photocatalysts with different precious metals. Their photocatalytic reactivities and selectivities were measured by XPS spectra. It was found from the experimental results that the precious metals existing on TiO₂ photocatalysts could promote of hydrogenation reaction in photocatalytic hydrolysis of propyne, and made the yield of propene product increasing. Among the titanium oxides loaded with Pt, Ru, Rh, Pd and Ag, the photocatalyst loaded with Pd had the highest photocatalytic reactivities under UV light(λ>270 nm) irradiation. The photocatalytic reactivities are closely related to the oxidation state of precious metals and it is necessary to make the valence of precious metals be reduced to 0 valence for increasing photcatalytic reactivities.

Key words: Precious metal, Titanium oxide, Photocatalyst, Propyne

CLC Number:

O643.32

TrendMD:

ZHANG Jin-Long, Masakazu Anpo . A Study of Loaded Photocatalysts with Precious Metal on the Photocatalytic Hydrolysis Reaction of Propyne(Ⅲ)[J]. Chem. J. Chinese Universities, 2004, 25(4): 733.

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A Study of Loaded Photocatalysts with Precious Metal on the Photocatalytic Hydrolysis Reaction of Propyne(Ⅲ)

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