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Citation: FANG Shu-Mei, OU Yan, LIN Jing-Dong, LIAO Dai-Wei. Preparation of Cu/Sr₃Ti₂O₇ and Its Photocatalytic Activity of Watersplitting for Hydrogen Evolution[J]. Acta Physico-Chimica Sinica, ;2007, 23(04): 601-604. doi: 10.3866/PKU.WHXB20070429 shu

Preparation of Cu/Sr₃Ti₂O₇ and Its Photocatalytic Activity of Watersplitting for Hydrogen Evolution

1.
Department of Chemistry, State Key Laboratory of Physical Chemistry of Solid Surfaces, Institute of Physical Chemistry, Xiamen University, Xiamen 361005, Fujian Province, P. R. China

Received Date: 10 October 2006
Available Online: 9 March 2007

Sr3Ti2O7 photocatalyst with perovskite-layered structure was synthesized by polymerized complex method (PCM). Cu ion as an effective dopant was loaded onto Sr3Ti2O7 catalyst. Cu/Sr3Ti2O7 catalyst was applied in the mixture of water and methanol, methanol was used as a sacrificial agent under ultra-violet irradiation, and the catalyst was characterized by XPS, XRD, and UV-Vis DRS. The results showed that Cu existed in several kinds of valence and the photocatalytic activity of Cu/Sr3Ti2O7 was superior to that of pure Sr3Ti2O7. Cu+ and adsorbed oxygen can accelerate the interfacial electron transfer. When the amount of Cu was 1.5%(w), the best catalytic effect was obtained and the stable average hydrogen evolution rate was about 550-600 μmol·h-1. The Cu/Sr3Ti2O7 after reduction attained the highest hydrogen evolution rate that was close to 1140.8 μmol·h-1.
- Perovskite; Water splitting; Hydrogen; Photocatalysts; Sr3Ti2O7
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通讯作者: 陈斌, bchen63@163.com

Preparation of Cu/Sr₃Ti₂O₇ and Its Photocatalytic Activity of Watersplitting for Hydrogen Evolution