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Publication Detail
Acceleration effects of phosphate modification on the decay dynamics of photo-generated electrons of TiO and its photocatalytic activity
Abstract
The surface modification with a proper amount of phosphate accelerates the dynamic decay of photogenerated electrons in the nanocrystalline anatase TiO film in the presence of O , consequently prolonging greatly the lifetime of photogenerated holes so as to improve the charge separation of TiO 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 reduction and the produced hydroxyl radical amount. The acceleration effects are attributed to the increased amount of adsorbed O by means of the curves of O temperature-programmed desorption. © 2012 The Royal Society of Chemistry.
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