我组高晋在Inorg. Chem. Front上发表论文

题目：

Carbon quantum dot-covered porous Ag withenhanced activity for selective electroreduction ofCO₂ to CO

作者：

Jin Gao,‡ Siqi Zhao,‡ Sijie Guo, Huibo Wang, Yue Sun, Bowen Yao,* Yang Liu,*Hui Huang * and Zhenhui Kang

单位：

†Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory forCarbon-Based Functional Materials & Devices, Soochow University, 199 Ren’ai Road,Suzhou, 215123 Jiangsu, PR China.

摘要：

Ag is a promising efficient catalyst for selective electroreduction of CO2 to CO. However, challenges suchas high overpotential and poor stability for Ag in CO₂ electroreduction still remain unsolved. In this work,we demonstrate that a carbon quantum dot (CQD)-covered porous Ag (p-Ag/CQD) composite canefficiently reduce CO₂ to CO with a maximum CO faradaic efficiency of 83.2% at the potential of −0.8 V(vs. RHE). The p-Ag/CQD composite exhibits a 6.3-fold and 20.8-fold enhancement of CO currentdensity relative to porous Ag and Ag foil, respectively, and shows a more stable current density during the4 h electrolysis. The dramatically enhanced catalytic activity of the p-Ag/CQD composite should beascribed to its porous structure and the existence of CQDs on its surface. The existing CQDs can improvethe abilities of CO₂ adsorption/CO desorption and stabilize the CO₂⁻ intermediate to achieve a loweroverpotential compared with porous Ag and Ag foil. More importantly, the synergistic effect of porous Agand CQDs has a significant catalytic effect on the CO₂ reduction reaction.

影响因子：

5.934

分区情况：

2区

链接：  

https://pubs.rsc.org/en/content/articlehtml/2019/qi/c9qi00217k