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Photocatalytic Oxidation of CO on TiO2: Chemisorption of O2, CO,and H2 |
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| Authors: | Wenxin Dai Dr Xun Chen Xiangping Zheng Zhengxin Ding Dr Xuxu Wang Prof Dr Ping Liu Prof Dr Xianzhi Fu Prof Dr |
| Institution: | Research Institute of Photocatalysis, State Key Laboratory Breeding Base of Photocatalysis, Fuzhou University, Fuzhou 350002 (China), Fax: (+86)?591‐83738608 |
| Abstract: | On the surface : Adsorption of O2 at the surface oxygen vacancy (SOV) sites of TiO2 reconstructs the lattice oxygen (healing SOVs), resulting in a decrease of the photocatalytic activity of oxidizing CO over vacuum‐pretreated TiO2 with increasing temperature (see scheme). Adsorption of H2 produces new SOVs at the TiO2 surface and stabilizes the photocatalytic activity.  |
| Keywords: | carbon monoxide chemisorption hydrogen photooxidation surface chemistry |