Photoinduced electron transfer and photodegradation of malonic acid at Au/TiO2 investigated by in situ ATR-IR spectroscopy
Hu, Xuefeng1,3; Buergi, Thomas2,3
发表期刊APPLIED CATALYSIS A-GENERAL
ISSN0926-860X
2012-12-27
卷号449期号:.页码:139-144
关键词Au@tio2 In Situ Spectroscopy Attenuated Total Reflection Photocatalysis Malonic Acid
产权排序[Hu, Xuefeng] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc, Yantai 264003, Shandong, Peoples R China; [Buergi, Thomas] Univ Geneva, Dept Chim Phys, CH-1211 Geneva 4, Switzerland; [Hu, Xuefeng; Buergi, Thomas] Heidelberg Univ, Inst Phys Chem, D-69120 Heidelberg, Germany
通讯作者Hu, XF (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc, Yantai 264003, Shandong, Peoples R China.,xfhu@yic.ac.cn ; Thomas.Buergi@unige.ch
作者部门中科院海岸带环境过程与生态修复重点实验室
英文摘要TiO2 coated Au nanoparticles were synthesized and characterized by TEM, XPS and XRD. It was found that the Au nanoparticles were coated with TiO2 thus forming a core-shell structure. Electron transfer, adsorption and photodegradation of malonic acid on the catalyst were investigated by in situ attenuated total reflection infrared (ATR-IR) spectroscopy. Malonic acid adsorbed and underwent photodegradation efficiently in air and nitrogen atmosphere under UV light illumination on the prepared catalyst. As intermediate species oxalate was observed on the catalyst surface during the photodegradation of malonic acid. The Au nanoparticles accelerate the degradation of malonic acid by capturing the conduction band electrons of TiO2. The ATR spectra also reveal interface electron transfer from Au nanoparticles to TiO2 under visible light illumination and from TiO2 to Au nanoparticles under UV illumination. (C) 2012 Elsevier B.V. All rights reserved.; TiO2 coated Au nanoparticles were synthesized and characterized by TEM, XPS and XRD. It was found that the Au nanoparticles were coated with TiO2 thus forming a core-shell structure. Electron transfer, adsorption and photodegradation of malonic acid on the catalyst were investigated by in situ attenuated total reflection infrared (ATR-IR) spectroscopy. Malonic acid adsorbed and underwent photodegradation efficiently in air and nitrogen atmosphere under UV light illumination on the prepared catalyst. As intermediate species oxalate was observed on the catalyst surface during the photodegradation of malonic acid. The Au nanoparticles accelerate the degradation of malonic acid by capturing the conduction band electrons of TiO2. The ATR spectra also reveal interface electron transfer from Au nanoparticles to TiO2 under visible light illumination and from TiO2 to Au nanoparticles under UV illumination. (C) 2012 Elsevier B.V. All rights reserved.
文章类型Article
资助机构Yantai Science & Technology Bureau [2010160]
收录类别SCI
语种英语
关键词[WOS]REFLECTION INFRARED-SPECTROSCOPY ; TITANIUM-DIOXIDE ; TIO2 FILMS ; GOLD NANOPARTICLES ; ANATASE TIO2 ; FTIR ; WATER ; SURFACES ; PHOTOCATALYSIS ; ABSORPTIONS
研究领域[WOS]Chemistry ; Environmental Sciences & Ecology
WOS记录号WOS:000313224500016
引用统计
被引频次:12[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cn/handle/133337/6032
专题中国科学院海岸带环境过程与生态修复重点实验室
作者单位1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc, Yantai 264003, Shandong, Peoples R China
2.Univ Geneva, Dept Chim Phys, CH-1211 Geneva 4, Switzerland
3.Heidelberg Univ, Inst Phys Chem, D-69120 Heidelberg, Germany
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Hu, Xuefeng,Buergi, Thomas. Photoinduced electron transfer and photodegradation of malonic acid at Au/TiO2 investigated by in situ ATR-IR spectroscopy[J]. APPLIED CATALYSIS A-GENERAL,2012,449(.):139-144.
APA Hu, Xuefeng,&Buergi, Thomas.(2012).Photoinduced electron transfer and photodegradation of malonic acid at Au/TiO2 investigated by in situ ATR-IR spectroscopy.APPLIED CATALYSIS A-GENERAL,449(.),139-144.
MLA Hu, Xuefeng,et al."Photoinduced electron transfer and photodegradation of malonic acid at Au/TiO2 investigated by in situ ATR-IR spectroscopy".APPLIED CATALYSIS A-GENERAL 449..(2012):139-144.
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