| New evidence for the regulation of photogenerated electron transfer on surface potential energy controlled co-catalyst on TiO2 - The investigation of hydrogen production over selectively exposed Au facet on Au/TiO2 | |
| Department | OSSO国家重点实验室 |
Cui ET(崔恩田)1,2 ; Lu GX(吕功煊)1; Lv GX(吕功煊)
| |
| The second department | erc国家工程研究中心 |
| 2014 | |
| Source Publication | International Journal of Hydrogen Energy
 |
| ISSN | 0360-3199 |
| Volume | 39Issue:15Pages:7672-7685 |
| Abstract | In this study, Au/TiO2 samples with different exposed facets ({100}, {100/111}, and {111}) of Au were employed as catalysts for the examination of facet-dependent catalytic activity toward photocatalytic hydrogen evolution from water. By photosensitized using Eosin Y as antenna molecule, Au/TiO2 series photocatalysts exhibited different photocatalytic hydrogen evolution performances under visible light irradiation. Au{111}/TiO2 photocatalyst presented the highest photocatalytic hydrogen generation activity among Au/TiO2 series samples. As evidenced by photoluminescence spectra, photocurrent, electrochemical impedance spectra, and Mott–Schottky characterizations, the difference in photocatalytic activities resulted from the different electron transfer rates from the conduction band of TiO2 to Au nanoparticles. Au nanoparticles with exposed {111} facets were more effective in trapping electrons due to their higher Fermi level. In addition, the apparent activation energy of Au{111}/TiO2 sample was the lowest, resulted from the biggest uncoordinated numbers of Au atoms on Au{111} nanoparticles, which was favor in forming the hydrogen–metal bond. This study discloses the facet-dependent effect of noble-metal cocatalyst on semiconductor photocatalysts in photocatalytic water reduction, and will give an insight into design and synthesis of high-efficient noble metal/semiconductor hybrid photocatalysts. |
| Keyword | Photocatalytic Hydrogen Generation Au Cocatalyst Selectively Exposed Facet Fermi Level |
| Subject Area | 物理化学与绿色催化 |
| DOI | 10.1016/j.ijhydene.2014.03.010 |
| Funding Organization | 863 Program of Department of Sciences and Technology of China (Grant No. 2012AA051501) |
| Indexed By | SCI |
| If | 3.313 |
| Language | 英语 |
| Funding Project | 环境催化与清洁能源研究组;环境催化与氢能源研究组 |
| compositor | 第一作者单位 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/18790 |
| Collection | 羰基合成与选择氧化国家重点实验室（OSSO） 精细石油化工中间体国家工程研究中心（ERC） |
| Corresponding Author | Lv GX(吕功煊) |
| Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 10080, Peoples R China |
| Recommended Citation GB/T 7714 | Cui ET,Lu GX,Lv GX. New evidence for the regulation of photogenerated electron transfer on surface potential energy controlled co-catalyst on TiO2 - The investigation of hydrogen production over selectively exposed Au facet on Au/TiO2[J]. International Journal of Hydrogen Energy,2014,39(15):7672-7685. |
| APA | Cui ET,Lu GX,&吕功煊.(2014).New evidence for the regulation of photogenerated electron transfer on surface potential energy controlled co-catalyst on TiO2 - The investigation of hydrogen production over selectively exposed Au facet on Au/TiO2.International Journal of Hydrogen Energy,39(15),7672-7685. |
| MLA | Cui ET,et al."New evidence for the regulation of photogenerated electron transfer on surface potential energy controlled co-catalyst on TiO2 - The investigation of hydrogen production over selectively exposed Au facet on Au/TiO2".International Journal of Hydrogen Energy 39.15(2014):7672-7685. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 20147672-7685.pdf（3548KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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