Stabilization and transformation of Pt nanocrystals supported on ZnAl2O4 spinel
文献类型：期刊论文
| 作者 | Liu, Jun1; Li, Wei-Zhen1,3; Kovarik, Libor1; Cheng, Yingwen1; Nie, Lei1; Bowden, Mark E.1; Wang, Yong1,2 |
| 刊名 | RSC ADVANCES
 |
| 出版日期 | 2017 |
| 卷号 | 7期号:6页码:3282-3286 |
| 英文摘要 | The role of interfacial interaction on the stabilization and transformation of Pt nanocrystals supported on zinc aluminate (ZnAl2O4) was systematically studied in this work. In addition to the remarkable stability of Pt nanocrystals supported on the {111} ZnAl2O4 facet under a harsh oxidizing atmosphere, we also identified the phase segregation of ZnAl2O4 to ZnO and Al2O3 and the transformation of Pt to PtZn bimetallic alloy for Pt supported on other facets. High resolution scanning transmission electron microscopy and X-ray diffraction analyses reveal the phase segregation is associated with a cation migration mechanism associated with replacement of Zn2+ by Al3+ in the spinel structure. This work confirms the strong interfacial interactions between precious metal nanocrystals and that the spinel support is a general mechanism for stabilizing precious metal catalysts, with important implications for the rational design of stable integrated catalysis systems. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Multidisciplinary |
| 研究领域[WOS] | Chemistry |
| 关键词[WOS] | PLATINUM NANOPARTICLES ; CATALYSTS ; SILICA ; OXIDE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000393749200029 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/151889]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Pacific Northwest Natl Lab, Inst Integrated Catalysis, POB 999, Richland, WA 99352 USA 2.Washington State Univ, Gene & Linda Voiland Sch Chem Engn & Bioengn, Pullman, WA 99164 USA 3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Jun,Li, Wei-Zhen,Kovarik, Libor,et al. Stabilization and transformation of Pt nanocrystals supported on ZnAl2O4 spinel[J]. RSC ADVANCES,2017,7(6):3282-3286. |
| APA | Liu, Jun.,Li, Wei-Zhen.,Kovarik, Libor.,Cheng, Yingwen.,Nie, Lei.,...&Wang, Yong.(2017).Stabilization and transformation of Pt nanocrystals supported on ZnAl2O4 spinel.RSC ADVANCES,7(6),3282-3286. |
| MLA | Liu, Jun,et al."Stabilization and transformation of Pt nanocrystals supported on ZnAl2O4 spinel".RSC ADVANCES 7.6(2017):3282-3286. |
入库方式： OAI收割
来源：大连化学物理研究所
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