Resolving the puzzle of single-atom silver dispersion on nanosized gamma-Al2O3 surface for high catalytic performance
文献类型：期刊论文
| 作者 | Wang, Fei ; Ma, Jinzhu; Xin, Shaohui; Wang, Qiang; Xu, Jun; Zhang, Changbin; He, Hong; Zeng, Xiao Cheng
|
| 刊名 | NATURE COMMUNICATIONS
 |
| 出版日期 | 2020-01-27 |
| 卷号 | 11期号:1页码:1-9 |
| ISSN号 | 2041-1723 |
| 英文摘要 | Ag/gamma-Al2O3 is widely used for catalyzing various reactions, and its performance depends on the valence state, morphology and dispersion of Ag species. However, detailed anchoring mechanism of Ag species on gamma-Al2O3 remains largely unknown. Herein, we reveal that the terminal hydroxyls on gamma-Al2O3 are responsible for anchoring Ag species. The abundant terminal hydroxyls existed on nanosized gamma-Al2O3 can lead to single-atom silver dispersion, thereby resulting in markedly enhanced performance than the Ag cluster on microsized gamma-Al2O3. Density-functional-theory calculations confirm that Ag atom is mainly anchored by the terminal hydroxyls on (100) surface, forming a staple-like local structure with each Ag atom bonded with two or three terminal hydroxyls. Our finding resolves the puzzle on why the single-atom silver dispersion can be spontaneously achieved only on nanosized gamma-Al2O3, but not on microsized gamma-Al2O3. The obtained insight into the Ag species dispersion will benefit future design of more efficient supported Ag catalysts. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45101]  |
| 专题 | 生态环境研究中心_大气污染控制中心 |
| 推荐引用方式 GB/T 7714 | Wang, Fei,Ma, Jinzhu,Xin, Shaohui,et al. Resolving the puzzle of single-atom silver dispersion on nanosized gamma-Al2O3 surface for high catalytic performance[J]. NATURE COMMUNICATIONS,2020,11(1):1-9. |
| APA | Wang, Fei.,Ma, Jinzhu.,Xin, Shaohui.,Wang, Qiang.,Xu, Jun.,...&Zeng, Xiao Cheng.(2020).Resolving the puzzle of single-atom silver dispersion on nanosized gamma-Al2O3 surface for high catalytic performance.NATURE COMMUNICATIONS,11(1),1-9. |
| MLA | Wang, Fei,et al."Resolving the puzzle of single-atom silver dispersion on nanosized gamma-Al2O3 surface for high catalytic performance".NATURE COMMUNICATIONS 11.1(2020):1-9. |
入库方式： OAI收割
来源：生态环境研究中心
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