材料科学
结晶度
共价有机骨架
共价键
化学工程
选择性
电极
电解质
多孔性
氢
纳米技术
复合材料
有机化学
物理化学
催化作用
化学
工程类
作者
Xian-Xia Yang,Yi-Ran Du,Xiaoqiang Li,Guo‐Yi Duan,Yong Mei Chen,Bao‐Hua Xu
标识
DOI:10.1021/acsami.3c05679
摘要
The electrocatalytic reduction of CO2 to CO with high efficiency is one of the most promising approaches for CO2 conversion due to its considerable economic feasibility and broad application prospects. In this study, three Ag@COF-R (R = −H, −OCH3, −OH) hybrids were facilely fabricated by impregnating silver acetate (AgOAc) into respective covalent organic frameworks (COFs) prepared in advance. They differ significantly in the crystallinity, porosity, distribution, size, and electronic configuration of AgOAc species, which thereby influences both the activity and the selectivity of electrolytic CO2-to-CO transformation. Impressively, Ag@COF-OCH3 provided a high FECO of 93.0% with a high jCO of 213.9 mA cm–2 at −0.87 V (vs reversible hydrogen electrode, RHE) in 1 M KOH using a flow cell. In addition, it exhibited long-term durability at 100 mA cm–2 for 30 h.
科研通智能强力驱动
Strongly Powered by AbleSci AI