HomeNanotechnologyHeterostructured Bi-Cu2S Nanocrystals for Environment friendly CO2 Electroreduction to Formate

Heterostructured Bi-Cu2S Nanocrystals for Environment friendly CO2 Electroreduction to Formate


Electrochemical CO2 discount response (ECO2RR) pushed by renewable electrical energy holds promise to retailer intermittent power in chemical bonds whereas producing value-added chemical compounds and fuels sustainably. Sadly, it stays a grand problem to concurrently obtain excessive Faradaic effectivity (FE), low overpotential, and excessive present density of ECO2RR. Herein, we report the synthesis of heterostructured Bi-Cu2S nanocrystals by way of a one-pot solution-phase technique. The epitaxial development of Cu2S on Bi results in considerable interfacial websites and the resultant heterostructured Bi-Cu2S nanocrystals allow extremely environment friendly ECO2RR with largely lowered overpotential (240 mV decrease than Bi), near-unity FE (>98%) for formate manufacturing, and excessive partial present density (2.4- and 5.2-fold increased JHCOO- than Cu2S and Bi at -1.0 V vs. reversible hydrogen electrode, RHE). Density useful principle (DFT) calculations present that the electron switch from Bi to Cu2S on the interface results in the preferential stabilization of the formate-evolution intermediate (*OCHO).

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