Construction of Interpenetrated Ruthenium Metal–Organic
Frameworks as Stable Photocatalysts for CO<sub>2</sub> Reduction
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Abstract
Poor stability has long been a major
obstacle to the practical applications of metal–organic framework
(MOF) photocatalysts. This problem can be overcome by the use of structural
interpenetration. In this work, by modifying Ru metalloligands, we
have rationally designed two Ru–polypyridine based MOFs (with
non-interpenetrated and interpenetrated structures, respectively),
both of which exhibit similar photocatalytic activities for CO<sub>2</sub> photoreduction. Remarkably, the interpenetrated Ru-MOF possesses
good photocatalytic durability and recyclability, and shows much higher
thermal and photic stability in comparison with its non-interpenetrated
counterpart. To the best of our knowledge, this is the first time
that the stability of MOF photocatalysts was improved by using structural
interpenetration