文献类型：期刊文献

英文题名：Enhanced Photocatalysis by Au Nanoparticle Loading on TiO2 Single-Crystal (001) and (110) Facets

作者：Xing, Ming-Yang[1,2];Yang, Bing-Xing[3,4];Yu, Huan[1,2];Tian, Bao-Zhu[1,2];Bagwasi, Segomotso[1,2];Zhang, Jin-Long[1,2];Gongs, Xue-Qing[3,4]

机构：[1]E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China;[3]E China Univ Sci & Technol, Ctr Computat Chem, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[4]E China Univ Sci & Technol, Res Inst Ind Catalysis, Shanghai 200237, Peoples R China

年份：2013

卷号：4

期号：22

起止页码：3910

外文期刊名：JOURNAL OF PHYSICAL CHEMISTRY LETTERS

收录：;EI(收录号：20134917047297);WOS:【SCI-EXPANDED(收录号:WOS:000327557600016)】；

基金：This work has been supported by National Nature Science Foundation of China (2013CB632403, 21237003, 21073060, 21203062), National Basic Research Program of China (973 Program, 2010CB732306, 2011CB808505), the Project of International Cooperation of the Ministry of Science and Technology of China (2011DFA50530), the Science and Technology Commission of Shanghai Municipality (12230705000), and Sponsored by the Program of Shanghai Subject Chief Scientist (12XD1402200) and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Gold nanoparticles - Titanium dioxide - Photocatalysis - Electrons - Single crystals

摘要：Although the preparation of TiO2 exposed with high-energy facets is a challenge, these facets have a large application potential in the loading of Au nanoparticles. We successfully prepared TiO2 single crystals exposed with (001) and (110) facets as an ideal support to load the highly dispersed nanosized Au particles to improve the stability of Au on the catalyst surface and expand its photocatalytic applications. The transfer of photoexcited electrons from the higher-surface-energy facet, that is, (001) and (110), to the lower-energy facet of (101) could make the electrons aggregate on the (101) facet and leave holes on the (001) and (110) facets, which would promote the separation of electrons and holes. The highly dispersed Au nanoparticles also could capture the electrons from active facets and further improve the photocatalytic activity of TiO2. Systematic density functional theory calculation was also carried out to investigate the formation of (001) and (110) facets.