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	Photoelectrochemical Properties of Au-TiO2 Nanocomposite Film Prepared by Low-temperature Adsorption Method
	Fu Ping-Feng ; Zhang Peng-Yi
	2010-10-12 ; 2010-10-12
关键词	low-temperature adsorption Au-TiO2 nanocomposite film photoelectrochemical properties electrochemical impendence spectroscopy GOLD NANOPARTICLES TIO2 CATALYSTS PERFORMANCE DEGRADATION Chemistry, Inorganic & Nuclear
中文摘要	Au-TiO2 nanocomposite films were prepared by adsorbing prefabricated Au colloids on TiO2 films at low temperature. The Au-TiO2 films were characterized with ultra-high resolution FESEM, XRD and XPS, and their photoelectrochemical properties were measured under UV illumination. Au nanoparticles with an average diameter of (4.3 +/- 1.2) nm were homogeneously dispersed on the TiO2 films with high loading. The photoelectrochemical measurements showed that the photocurrent of TiO2/Ti electrode was improved about 5 folds, and the photovoltage significantly increased to more negative values after depositing Au nanoparticles. It indicates that Au nanoparticles have the beneficial role in improving the photoinduced charge separation efficiency and promoting the charge transfer at the interface between the electrode and electrolyte. The electrochemical impendence spectroscopy (EIS) analyses revealed that the resistance of charge transfer(R-et) of Au-TiO2/Ti electrode was reduced to half of that of TiO2/Ti, indicating that the carrier density in the Au-TiO2/Ti electrode is increased by suppressing the recombination of photogenerated hole-electron pairs.
语种	中文 ; 中文
出版者	CHINESE CHEMICAL SOC ; BEIJING ; C/O DEPT INT AFFAIRS, SECRETARY OF CHEM SOC, PO BOX 2709, BEIJING 100080, PEOPLES R CHINA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/79708]
专题	清华大学
推荐引用方式 GB/T 7714	Fu Ping-Feng,Zhang Peng-Yi. Photoelectrochemical Properties of Au-TiO2 Nanocomposite Film Prepared by Low-temperature Adsorption Method[J],2010, 2010.
APA	Fu Ping-Feng,&Zhang Peng-Yi.(2010).Photoelectrochemical Properties of Au-TiO2 Nanocomposite Film Prepared by Low-temperature Adsorption Method..
MLA	Fu Ping-Feng,et al."Photoelectrochemical Properties of Au-TiO2 Nanocomposite Film Prepared by Low-temperature Adsorption Method".(2010).

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