Mixed-Potential-Driven Catalysis: An Electrochemical Mechanism for Room-Temperature CO Oxidation on Gold Catalysts.

ABSTRACT: Gold is an effective catalyst for low-temperature CO oxidation, yet its mechanism remains debated. Among the various proposed mechanisms, increasing attention has been given to a possible electrochemical pathway in recent studies. Here, experimental evidence is reported that CO oxidation at room temperature in electrolytes proceeds via coupled electrochemical CO oxidation and oxygen reduction half-reactions, i.e., the mixed-potential-driven mechanism. A model system is designed with deposited Au nanoparticles (NPs) and nitrogen-doped reduced graphene oxide (NrGO) on carbon paper acting as spatially separated electrodes in a single electrolysis cell. After shorting the two electrodes, the reaction current and mixed potential of the overall CO oxidation are measured without any externally ap

SUBMITTER: Yan M 

PROVIDER: S-EPMC12462927 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature