A visible-light-responsive metal–organic framework for highly efficient and selective photocatalytic oxidation of amines and reduction of nitroaromatics
self-coupling of primaryamines and oxidative dehydrogenation of secondaryamines to selectively produce imines assisted by the green and economic oxidant of molecular oxygen. Studies reveal that both energy transfer and electron transfer from the photoexcited MOF to molecular oxygen are important for amineoxidation, where the highly reactive species of superoxide radicals and singletoxygen together account
electron and energy transfer, respectively. It is notable that the photocatalyticoxidation of thiols into disulphide have never been reported using a CP photocatalyst prior to this study. Meanwhile, the synthesized CPs exhibits superior photocatalytic performance to other reported ones for amine oxidation due to the synergy of singlet oxygen and superoxide radical species. The work provides an in-depth
transformations. We report herein the synthesis and characterization of a series of isomorphic MOFs which show a novel structure, wide visible-light absorption, high chemical stability, and specific redox potential. The prepared MOFs were explored for the photoinduced single-electron oxidation of thiol compounds, generating reactive thiyl radicals to afford thioethers via a convenient thiol–olefin reaction. Importantly
using an anthracene-based linker, and the photocatalytic properties of this visible-light-responsive compound are evaluated where it shows highly selective photooxidation of sulfides to produce sulfoxides relying on reactive species of singletoxygen.
Highly efficient visible-light-driven CO<sub>2</sub> reduction to formate by a new anthracene-based zirconium MOF via dual catalytic routes
作者:Dashu Chen、Hongzhu Xing、Chungang Wang、Zhongmin Su
DOI:10.1039/c6ta00429f
日期:——
CO2 reduction with a formate formation rate of 183.3 μmol h−1 mmolMOF−1, which is among the highest performances of Zr-MOFs. Both photocatalytic experiments and electron paramagnetic resonance (EPR) studies reveal that both the inorganic building unit Zr6 oxo cluster and the anthracene-based ligand contribute to the highly efficient photocatalysis of CO2 reduction. The dual photocatalytic routes are