2015/06/05 by Jonathan Rosen, Gregory S. Hutchings, Qi Lu +4 · 3 citations
Energy · Materials Science · #CO2 Reduction Techniques and Catalysts #Advanced Thermoelectric Materials and Devices #Electrocatalysts for Energy Conversion
paper · doi:10.1021/acscatal.5b00840
openalex publication_date 2015/06/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/09
Electroreduction of CO 2 in a highly selective and efficient manner is a crucial step toward CO 2 utilization. Nanostructured Ag catalysts have been found to be effective candidates for CO 2 to CO conversion. In this report, we combine experimental and computational efforts to explore the electrocatalytic reaction mechanism of CO 2 reduction on nanostructured Ag catalyst surfaces in an aqueous electrolyte. In contrast to bulk Ag catalysts, both nanoparticle and nanoporous Ag catalysts show enhanced ability to reduce the activation energy of the CO 2 to COOH ads intermediate step through the low-coordinated Ag surface atoms, resulting in a reaction mechanism involving a fast first electron and proton transfer followed by a slow second proton transfer as the rate-limiting step.