Metal-Organic Frameworks-derived Indium Clusters/Carbon Nanocomposites for Efficient CO2 Electroreduction
Yu Gong , Jing Pan , Lingling Zhang , Xiao Wang , Shuyan Song , Hongjie Zhang
Chemical Research in Chinese Universities ›› 2022, Vol. 38 ›› Issue (5) : 1287 -1291.
Metal-Organic Frameworks-derived Indium Clusters/Carbon Nanocomposites for Efficient CO2 Electroreduction
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.
Indium cluster / Indium oxide / Electrochemical reduction / CO2 electroreduction
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