期刊
INORGANICS
卷 6, 期 1, 页码 -出版社
MDPI
DOI: 10.3390/inorganics6010022
关键词
CO2 reduction; photocatalysis; NHC-ligated complexes
资金
- NSF [OIA-1539035, OIA-1430364, CHE-1664998]
- Office of Integrative Activities
- Office Of The Director [1539035, 1430364] Funding Source: National Science Foundation
- Office Of The Director
- Office of Integrative Activities [1430280] Funding Source: National Science Foundation
Re(pyNHC-PhCF3)(CO)(3)Br is a highly active photocatalyst for CO2 reduction. The PhCF3 derivative was previously empirically shown to be a robust catalyst. Here, the role of the PhCF3 group is probed computationally and the robust nature of this catalyst is analyzed with regard to the presence of water and oxygen introduced in controlled amounts during the photocatalytic reduction of CO2 to CO with visible light. This complex was found to work well from 0-1% water concentration reproducibly; however, trace amounts of water were required for benchmark Re(bpy)(CO)(3)Cl to give reproducible reactivity. When ambient air is added to the reaction mixture, the NHC complex was found to retain substantial performance (similar to 50% of optimized reactivity) at up to 40% ambient atmosphere and 60% CO2 while the Re(bpy)(CO)(3)Cl complex was found to give a dramatically reduced CO2 reduction reactivity upon introduction of ambient atmosphere. Through the use of time-correlated single photon counting studies and prior electrochemical results, we reasoned that this enhanced catalyst resilience is due to a mechanistic difference between the NHC- and bpy-based catalysts. These results highlight an important feature of this NHC-ligated catalyst: substantially enhanced stability toward common reaction contaminates.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据