化学
催化作用
光催化
金属有机骨架
猝灭(荧光)
电子转移
电化学
铜
同种类的
氧化还原
营业额
光化学
无机化学
金属
组合化学
物理化学
电极
有机化学
荧光
吸附
物理
热力学
量子力学
作者
Xuanyu Feng,Yunhong Pi,Yang Song,Carter Brzezinski,Ziwan Xu,Zhong Li,Wenbin Lin
摘要
We report here the design of two multifunctional metal-organic frameworks (MOFs), mPT-Cu/Co and mPT-Cu/Re, comprising cuprous photosensitizers (Cu-PSs) and molecular Co or Re catalysts for photocatalytic hydrogen evolution (HER) and CO2 reduction (CO2RR), respectively. Hierarchical organization of Cu-PSs and Co/Re catalysts in these MOFs facilitates multielectron transfer to drive HER and CO2RR under visible light with an HER turnover number (TON) of 18 700 for mPT-Cu/Co and a CO2RR TON of 1328 for mPT-Cu/Re, which represent a 95-fold enhancement over their homogeneous controls. Photophysical and electrochemical investigations revealed the reductive quenching pathway in HER and CO2RR catalytic cycles and attributed the significantly improved performances of MOFs over their homogeneous counterparts to enhanced electron transfer due to close proximity between Cu-PSs and active catalysts and stabilization of Cu-PSs and molecular catalysts by the MOF framework.
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