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DOI | 10.1038/s41467-020-15261-5 |
Single-atom catalysts reveal the dinuclear characteristic of active sites in NO selective reduction with NH3 | |
Qu, Weiye1; Liu, Xiaona1; Chen, Junxiao1; Dong, Yangyang1; Tang, Xingfu1,2; Chen, Yaxin1 | |
2020-03-24 | |
发表期刊 | NATURE COMMUNICATIONS
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ISSN | 2041-1723 |
出版年 | 2020 |
卷号 | 11期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | High-performance catalysts are extremely required for controlling NO emission via selective catalytic reduction (SCR), and to acquire a common structural feature of catalytic sites is one key prerequisite for developing such catalysts. We design a single-atom catalyst system and achieve a generic characteristic of highly active SCR catalytic sites. A single-atom Mo-1/Fe2O3 catalyst is developed by anchoring single acidic Mo ions on (001) surfaces of reducible alpha-Fe2O3, and the individual Mo ion and one neighboring Fe ion are thus constructed as one dinuclear site. As the number of the dinuclear sites increases, SCR rates increase linearly but the apparent activation energy remains almost unchanged, evidencing the identity of the dinuclear active sites. We further design W-1/Fe2O3 and Fe-1/WO3 and find that tuning acid or/and redox properties of dinuclear sites can alter SCR rates. Therefore, this work provides a design strategy for developing improved SCR catalysts via optimizing acid-redox properties of dinuclear sites. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000530024600002 |
WOS关键词 | VANADIA-TITANIA CATALYSTS ; RAY-ABSORPTION SPECTROSCOPY ; NITRIC-OXIDE ; ACID SITES ; AMMONIA ; SCR ; MECHANISM ; V2O5/TIO2 ; SUPPORT ; FE2O3 |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/249640 |
专题 | 资源环境科学 |
作者单位 | 1.Fudan Univ, Dept Environm Sci & Engn, Shanghai 200433, Peoples R China; 2.Nanjing Univ Informat Sci & Technol, Jiangsu Collaborat Innovat Ctr Atmospher Environm, Nanjing 210044, Peoples R China |
推荐引用方式 GB/T 7714 | Qu, Weiye,Liu, Xiaona,Chen, Junxiao,et al. Single-atom catalysts reveal the dinuclear characteristic of active sites in NO selective reduction with NH3[J]. NATURE COMMUNICATIONS,2020,11(1). |
APA | Qu, Weiye,Liu, Xiaona,Chen, Junxiao,Dong, Yangyang,Tang, Xingfu,&Chen, Yaxin.(2020).Single-atom catalysts reveal the dinuclear characteristic of active sites in NO selective reduction with NH3.NATURE COMMUNICATIONS,11(1). |
MLA | Qu, Weiye,et al."Single-atom catalysts reveal the dinuclear characteristic of active sites in NO selective reduction with NH3".NATURE COMMUNICATIONS 11.1(2020). |
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