A Green Electrochemical Strategy for Removing CO₂ Pollution and Conversion into Valuable Products using Bi Dispersed Ordered Mesoporous Carbon Electro-catalyst

Carbon dioxide constitutes almost three quarters of greenhouse gases and is therefore considered as the main gas responsible for climate change. Among the current methodologies, one of the most promising approaches to reduce the CO۲ level is the electrochemical CO۲ reduction reaction, which can effectively transform waste CO۲ into value-added chemicals and carbon-based fuels using electricity. In this work, a facial method was developed to prepare bismuth dispersed Ordered Mesoporous Carbon (OMC) as electrocatalyst for CO₂ conversion. The OMC was synthesized via carbonization of ۱-methyl-۳-phenethyl-۱H-imidazolium hydrogen sulfate in the presence of ordered mesoporous silica SBA-۱۵ as a structural guide and guanine as nitrogen sources. Nitrogen centers of catalyst facilitate the anchoring of Bi nanoparticles, suitable surface wettability, and improved electron transfer. The electrocatalyst exhibited Faradaic efficiencies as high as ۸۶% to produce ethanol, methanol, acetic acid and formic acid at -۰.۹ V vs. RHE with exhibiting high current density.

کلیدواژه ها:

CO۲ conversion ، Electrocatalyst ، Ordered mesoporous carbon ، Bismuth