Classical strong metal-support interactions between gold nanoparticles and titanium dioxide
文献类型：期刊论文
| 作者 | Tang, Hailian; Su, Yang; Zhang, Bingsen; Lee, Adam F.; Isaacs, Mark A.; Wilson, Karen; Li, Lin; Ren, Yuegong; Huang, Jiahui; Haruta, Masatake |
| 刊名 | AMER ASSOC ADVANCEMENT SCIENCE
 |
| 出版日期 | 2017-10-01 |
| 卷号 | 3期号:10页码:- |
| ISSN号 | 2375-2548 |
| 英文摘要 | Supported metal catalysts play a central role in the modern chemical industry but often exhibit poor on-stream stability. The strong metal-support interaction (SMSI) offers a route to control the structural properties of supported metals and, hence, their reactivity and stability. Conventional wisdom holds that supported Au cannot manifest a classical SMSI, which is characterized by reversible metal encapsulation by the support upon high-temperature redox treatments. We demonstrate a classical SMSI for Au/TiO2, evidenced by suppression of CO adsorption, electron transfer from TiO2 to Au nanoparticles, and gold encapsulation by a TiOx overlayer following high-temperature reduction (reversed by subsequent oxidation), akin to that observed for titania-supported platinum group metals. In the SMSI state, Au/TiO2 exhibits markedly improved stability toward CO oxidation. The SMSI extends to Au supported over other reducible oxides (Fe3O4 and CeO2) and other group IB metals (Cu and Ag) over titania. This discovery highlights the general nature of the classical SMSI and unlocks the development of thermochemically stable IB metal catalysts.; Supported metal catalysts play a central role in the modern chemical industry but often exhibit poor on-stream stability. The strong metal-support interaction (SMSI) offers a route to control the structural properties of supported metals and, hence, their reactivity and stability. Conventional wisdom holds that supported Au cannot manifest a classical SMSI, which is characterized by reversible metal encapsulation by the support upon high-temperature redox treatments. We demonstrate a classical SMSI for Au/TiO2, evidenced by suppression of CO adsorption, electron transfer from TiO2 to Au nanoparticles, and gold encapsulation by a TiOx overlayer following high-temperature reduction (reversed by subsequent oxidation), akin to that observed for titania-supported platinum group metals. In the SMSI state, Au/TiO2 exhibits markedly improved stability toward CO oxidation. The SMSI extends to Au supported over other reducible oxides (Fe3O4 and CeO2) and other group IB metals (Cu and Ag) over titania. This discovery highlights the general nature of the classical SMSI and unlocks the development of thermochemically stable IB metal catalysts. |
| 学科主题 | Multidisciplinary Sciences |
| 语种 | 英语 |
| 资助机构 | National Key R&D Program of China [2016YFA0202801, 2016YFA0202804]; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB17020100]; National Natural Science Foundation of China [21776270, 21476232, 21303184, 91545119]; Department of Science and Technology of Liaoning Province [2015020086-101]; Youth Innovation Promotion Association of the Chinese Academy of Sciences (CAS) [2015152]; Strategic Priority Research Program of the CAS [XDA09030103] |
| 公开日期 | 2018-01-10 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/79050]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Qiao, BT; Wang, JH (reprint author), Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China.; Wang, JH (reprint author), Chinese Acad Sci, Dalian Inst Chem Phys, Mossbauer Effect Data Ctr, Dalian 116023, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Tang, Hailian,Su, Yang,Zhang, Bingsen,et al. Classical strong metal-support interactions between gold nanoparticles and titanium dioxide[J]. AMER ASSOC ADVANCEMENT SCIENCE,2017,3(10):-. |
| APA | Tang, Hailian.,Su, Yang.,Zhang, Bingsen.,Lee, Adam F..,Isaacs, Mark A..,...&Wang, JH .(2017).Classical strong metal-support interactions between gold nanoparticles and titanium dioxide.AMER ASSOC ADVANCEMENT SCIENCE,3(10),-. |
| MLA | Tang, Hailian,et al."Classical strong metal-support interactions between gold nanoparticles and titanium dioxide".AMER ASSOC ADVANCEMENT SCIENCE 3.10(2017):-. |
入库方式： OAI收割
来源：金属研究所
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