Graphdiyne/copper sulfide heterostructure for active conversion of CO2 to formic acid

被引:9
作者
Cao, Shiyao [1 ]
Xue, Yurui [1 ,2 ]
Chen, Xi [1 ,3 ]
Zhang, Chao [1 ,3 ]
Gao, Yang [1 ,3 ]
Li, Yuliang [1 ,3 ]
机构
[1] Chinese Acad Sci, Inst Chem, CAS Key Lab Organ Solids, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
[2] Shandong Univ, Inst Frontier & Interdisciplinary Sci, Sci Ctr Mat Creat & Energy Convers, Sch Chem & Chem Engn,Shandong Prov Key Lab Sci Mat, Jinan 250100, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
基金
中国国家自然科学基金;
关键词
ELECTROCHEMICAL REDUCTION; HYDROGEN; SURFACE;
D O I
10.1039/d3qm00245d
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The synthesis of electrocatalysts with high selectivity, activity, and stability for the CO2 reduction reaction (CO2RR) is a promising and sustainable route to convert CO2 into value-added chemicals at room temperatures and pressures. Here we report a new heterostructured electrocatalyst of graphdiyne/copper sulfide (GDY/CuSx) via the controlled in situ growth of GDY on the surface of CuSx. Our results show that the introduction of GDY can effectively induce the formation of mixed-valence Cu(i, ii) and incomplete charge transfer between the GDY and Cu atoms, which enhance the conductivity, produce new active sites, and finally result in a higher catalytic performance. In addition, the GDY grown on the surface of the catalysts endows the sample with a high long-term stability. Benefitting from above advantages, GDY/CuSx shows a high CO2-to-formate conversion performance with a high faradaic efficiency (FE) and long-term stability at room temperatures and ambient pressures.
引用
收藏
页码:2620 / 2627
页数:9
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