Kim, Cheonghee Jeon, Hyo Sang Eom, Taedaehyeong Jee, Michael Shincheon Kim, Hyungjun Friend, Cynthia M. Min, Byoung Koun Hwang, Yun Jeong 2024-01-20T05:33:40Z 2024-01-20T05:33:40Z 2021-09-03 2015-11-04 0002-7863 https://pubs.kist.re.kr/handle/201004/124764 Selective electrochemical reduction of CO2, is one of the most sought-after processes because of the potential to convert a harmful greenhouse gas to a useful chemical. We have discovered that immobilized Ag nanoparticles supported on carbon exhibit enhanced Faradaic efficiency and a lower overpotential for selective reduction of CO2, to CO. These electrocatalysts were synthesized directly on the carbon support by a facile one-pot method using a cysteamine anchoring agent resulting in controlled monodispersed particle sizes. These synthesized Ag/C electrodes showed improved activities, specifically decrease of the overpotential by 300 mV at 1 mA/cm(2), and 4-fold enhanced CO Faradaic efficiency at -0.75 V vs RHE with the optimal particle size of 5 nm compared to polycrystalline Ag foil. DFT calculations enlightened that the specific interaction between Ag nanoparticle and the anchoring agents modified the catalyst surface to have a selectively higher affinity to the intermediate COOH over CO, which effectively lowers the overpotential. English AMER CHEMICAL SOC RENEWABLE ENERGY GOLD CLUSTERS SIZE CONVERSION Achieving Selective and Efficient Electrocatalytic Activity for CO2 Reduction Using Immobilized Silver Nanoparticles Article 10.1021/jacs.5b06568 1 JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.137, no.43, pp.13844 - 13850 JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 137 43 13844 13850 scie scopus 000364355900026 2-s2.0-84953455885 Chemistry, Multidisciplinary Chemistry Article RENEWABLE ENERGY GOLD CLUSTERS SIZE CONVERSION