Chemical Research in Chinese Universities ›› 2022, Vol. 38 ›› Issue (5): 1287-1291.doi: 10.1007/s40242-022-2034-9

• Articles • Previous Articles     Next Articles

Metal-Organic Frameworks-derived Indium Clusters/Carbon Nanocomposites for Efficient CO2 Electroreduction

GONG Yu1,2, PAN Jing1, ZHANG Lingling1, WANG Xiao1,2, SONG Shuyan1,2, ZHANG Hongjie1,2,3   

  1. 1. State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China;
    2. School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China;
    3. Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
  • Received:2022-01-30 Online:2022-10-01 Published:2022-10-08
  • Contact: WANG Xiao, SONG Shuyan, ZHANG Hongjie E-mail:wangxiao@ciac.ac.cn;songsy@ciac.ac.cn;hongjie@ciac.ac.cn
  • Supported by:
    This work was supported by the National Key Research and Development Program of China(Nos.2021YFB3500700 and 2016YFA0203200), the National Natural Science Foundation of China(Nos.21771173, 22020102003 and 22025506), and the K. C. Wong Education Foundation(No.GJTD-2018-09).

Abstract: Electrochemical reduction of carbon dioxide into value-added products is a promising way to recycle the greenhouse gas, thus solving the crisis of global warming. Pressing challenges remain in regulating the catalytic selectivity. In this work, we demonstrated a metal-organic frameworks-assisted approach to synthesizing In species loaded on the surface of N doped carbon matrix. By controlling the particle sizes, the catalytic selectivity can be easily altered. The obtained Inc/NC possesses the outstanding capability for converting CO2 into CO. And 80.09% Faraday efficiency (FE) of CO can be achieved at 0.8 V vs. RHE. While the In2O3/C exhibits different catalytic behaviors, the main product is formic acid and the FE is more than 50% at 0.8 V vs. RHE. The selectivity reversal can be attributed to the strong interactions between In clusters and N atoms of carbon supports, which efficiently inhibits the formation of the by-product, formic acid. Our research has paved a new way to modulate catalytic selectivity by manipulating the fine structures of the catalysts.

Key words: Indium cluster, Indium oxide, Electrochemical reduction, CO2 electroreduction