Enhancing formate yield through electrochemical CO2 reduction using BiOCl and g-C3N4 hybrid catalyst

BiOCl/g-C3N4 nanocomposties have been prepared using glycine as structural-directing agent. Nanocomposites are active and selective to HCOOH in the electrochemical reduction of CO2. The material with 52.1 wt% of BiOCl produces 300 mmol/g of HCOOH in 1.5h with a Faradic Efficiency of 77% at -1.06V vs RHE. The active phase is strongly modified under operative conditions, evolving into Bi2O2CO3 and metal Bi.