我组高晋在Materials Science上发表论文

题目：

Cu atomic clusters on N-doped porous carbon with tunable oxidation state for the highly-selective electroreduction of CO₂

作者：

Jin Gao,^a Hui Wang,^a Kun Feng,^a Chensheng Xiang,^b Huibo Wang,a Huihui Qi,^a Yang Liu,*^a He Tian,*^b Jun Zhong*^a and Zhenhui Kang*

单位：

^aJiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials

(FUNSOM), Soochow University, 199 Ren’ai Road, Suzhou 215123, Jiangsu, People’s Republic of China

^bCenter of Electron Microscopy, State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, Zhejiang, China.

摘要：

Efficient catalysts for the electrochemical CO₂ reduction reaction (CO₂ RR) are highly required for solving the environmental crisis. However, the product selectivity and the catalyst durability for CO₂ RR are still big problems. Here, we synthesized ultra-**all Cu atomic clusters (ACs) dispersed on an N-doped porous carbon (NPC) support (Cu ACs/NPC) for efficient and highly selective CO₂RR to CO. The Cu ACs/NPC catalyst can achieve a maximum faradaic efficiency (FE) of 93.2% for CO production at a low potential of -0.5 V (vs. RHE), without any deactivation during 24 h of electrolysis. To the best of our knowledge, the Cu ACs/NPC catalyst, with high selectivity, low overpotential and excellent stability, represents one of the best Cu-based catalysts ever reported for CO₂RR to CO. The favorable structure of the Cu ACs on the support means that they have large surface active sites to enhance CO₂ adsorption for excellent performance. Moreover, in situ X-ray absorption spectroscopy (XAS) reveals that the Cu ACs/NPC has a tunable oxidation state, which can be easily switched between air-stable Cu²⁺ and highly reductive Cu⁰ for efficient CO₂RR. A combination of favorable structure and tunable oxidation state thus results in high activity towards the CO₂RR.

影响因子：

0.748

分区情况：

4区

链接：  

https://pubs.rsc.org/en/content/articlelanding/2020/ma/d0ma00433b#!divAbstract