Institutional Repository of Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences (KLCEP)
| 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
 |
| ISSN | 0926-860X |
| 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.,[email protected] ; [email protected] |
| 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 | |
| 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 |
| 推荐引用方式 GB/T 7714 | 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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