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| Microstructured Au/Ni-fiber catalyst for low-temperature gas-phase alcohol oxidation: Evidence of Ni2O3-Au+ hybrid active sites | |
| Zhao, Guofeng; Huang, Jun; Jiang, Zheng; Zhang, Shuo; Chen, Li; Lu, Yong | |
| 2013 | |
| Source Publication | APPLIED CATALYSIS B-ENVIRONMENTAL
 |
| ISSN | 0926-3373 |
| Volume | 140Pages:CONCATENATE(Sheet1!I214,-Sheet1!J214) |
| Abstract | Microfirous-structured Au/Ni-fiber catalysts prepared by Au galvanic deposition method are active and selective for the gas-phase oxidation of alcohols. The nature of their excellent low-temperature activity is explored especially by means of X-ray photoelectron spectroscopy (XPS) and X-ray absorption near-edge structure (XANES). An interesting NiO@Au ensemble nanostructure (i.e., partial coverage of Au particles with NiO segments) was clearly identified, which is governing the high low-temperature activity. XPS and XANES studies indicate that the NiO@Au ensembles provide a unique synergistic effect, inducing a high surface concentration of Ni2O3-Au+ hybrid active sites. The Ni2O3 specimens not only promote the formation of Au+ cations and stabilize them but also serve as active O species reservoir. It is also proposed that O-2 is activated on the oxygen vacancy of Ni2O3 and then the adsorbed O atoms spill over onto Au+ cations to react with alcohols. (C) 2013 Elsevier B.V. All rights reserved. |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 应物所项目组 |
| WOS ID | WOS:000321991300029 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/13824 |
| Collection | 中科院上海应用物理研究所2011-2020年 |
| Recommended Citation GB/T 7714 | Zhao, Guofeng,Huang, Jun,Jiang, Zheng,et al. Microstructured Au/Ni-fiber catalyst for low-temperature gas-phase alcohol oxidation: Evidence of Ni2O3-Au+ hybrid active sites[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2013,140:CONCATENATE(Sheet1!I214,-Sheet1!J214). |
| APA | Zhao, Guofeng,Huang, Jun,Jiang, Zheng,Zhang, Shuo,Chen, Li,&Lu, Yong.(2013).Microstructured Au/Ni-fiber catalyst for low-temperature gas-phase alcohol oxidation: Evidence of Ni2O3-Au+ hybrid active sites.APPLIED CATALYSIS B-ENVIRONMENTAL,140,CONCATENATE(Sheet1!I214,-Sheet1!J214). |
| MLA | Zhao, Guofeng,et al."Microstructured Au/Ni-fiber catalyst for low-temperature gas-phase alcohol oxidation: Evidence of Ni2O3-Au+ hybrid active sites".APPLIED CATALYSIS B-ENVIRONMENTAL 140(2013):CONCATENATE(Sheet1!I214,-Sheet1!J214). |
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| Microstructured Au-N（2031KB） | 开放获取 | CC BY-NC-SA | View Download | |||
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