光敏剂
光催化
共价键
光化学
卟啉
化学
量子产额
钌
共价有机骨架
吡啶
金属
催化作用
组合化学
有机化学
荧光
物理
量子力学
作者
Meng Lu,Shuai‐Bing Zhang,Mingyi Yang,Yufei Liu,Jia‐Peng Liao,Pei Huang,Mi Zhang,Shun‐Li Li,Zhong‐Min Su,Ya‐Qian Lan
标识
DOI:10.1002/ange.202307632
摘要
Abstract In this work, we innovatively assembled two types of traditional photosensitizers, that is pyridine ruthenium/ferrum (Ru(bpy) 3 2+ /Fe(bpy) 3 2+ ) and porphyrin/metalloporphyrin complex (2HPor/ZnPor) by covalent linkage to get a series of dual photosensitizer‐based three‐dimensional metal‐covalent organic frameworks (3D MCOFs), which behaved strong visible light‐absorbing ability, efficient electron transfer and suitable band gap for highly efficient photocatalytic hydrogen (H 2 ) evolution. Rubpy‐ZnPor COF achieved the highest H 2 yield (30 338 μmol g −1 h −1 ) with apparent quantum efficiency (AQE) of 9.68 %@420 nm, which showed one of the best performances among all reported COF based photocatalysts. Furthermore, the in situ produced H 2 was successfully tandem used in the alkyne hydrogenation with ≈99.9 % conversion efficiency. Theoretical calculations reveal that both the two photosensitizer units in MCOFs can be photoexcited and thus contribute optimal photocatalytic activity. This work develops a general strategy and shows the great potential of using multiple photosensitive materials in the field of photocatalysis.
科研通智能强力驱动
Strongly Powered by AbleSci AI