科研之友
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摘要
The surface modification with a proper amount of phosphate accelerates the dynamic decay of photogenerated electrons in the nanocrystalline anatase TiO2 film in the presence of O-2, consequently prolonging greatly the lifetime of photogenerated holes so as to improve the charge separation of TiO2 and then its photocatalytic activity for degrading gas-phase acetaldehyde and liquid-phase phenol mainly based on the transient absorption spectra and the measurements of electrochemical O-2 reduction and the produced hydroxyl radical amount. The acceleration effects are attributed to the increased amount of adsorbed O-2 by means of the curves of O-2 temperature-programmed desorption.
- 出版日期2012
- 单位黑龙江大学
