In Situ FT-IR Study of Photocatalytic Decomposition of Formic Acid to Hydrogen on Pt/TiO2 Catalyst

Chinese Journal of Catalysis ›› 2008, Vol. 29 ›› Issue (2): 105-107.

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In Situ FT-IR Study of Photocatalytic Decomposition of Formic Acid to Hydrogen on Pt/TiO2 Catalyst

CHEN Tao1,2, WU Guopeng1,2, FENG Zhaochi1, HU Gengshen1,2, SU Weiguang1,2, YING Pinliang1, LI Can1*

1 State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, The Chinese Academy of Sciences, Dalian 116023, Liaoning, China; 2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Received:2008-02-25 Online:2008-02-25 Published:2012-01-15

Abstract

Abstract: The anaerobic photocatalytic decomposition of formic acid to hydrogen on Pt/TiO2 was studied by in situ FT-IR spectroscopy. The molecularly adsorbed formic acid species is transformed to a formate species, and the formate species is transformed to carbonates during this reaction. The addition of water vapor in the reaction system strongly accelerates this photocatalytic reaction and promotes the H2 production efficiency. The possible mechanism of the reaction is proposed.

Key words: formic acid, platinum, titanium dioxide, photocatalysis, infrared spectroscopy

CHEN Tao;WU Guopeng;FENG Zhaochi;HU Gengshen;SU Weiguang;YING Pinliang;LI Can*. In Situ FT-IR Study of Photocatalytic Decomposition of Formic Acid to Hydrogen on Pt/TiO2 Catalyst[J]. Chinese Journal of Catalysis, 2008, 29(2): 105-107.

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In Situ FT-IR Study of Photocatalytic Decomposition of Formic Acid to Hydrogen on Pt/TiO2 Catalyst

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