Journal
CHEMICAL SCIENCE
Volume 10, Issue 12, Pages 3529-3534Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8sc05315d
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Funding
- Robert A. Welch Foundation [A-0030]
- National Natural Science Foundation of China (NSFC) [21701187]
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The charge repulsion between a catalyst and substrate will significantly reduce the contact occurring between them, resulting in low reactivity. Herein, we report an anionic porous coordination cage that is capable of encapsulating both a cationic catalyst and cationic substrate in its cavity at the same time. After encapsulating the [Ru(bpy)(3)]Cl-2+(2) (bpy = bipyridine) catalyst, the cage/catalyst composite serves as an active heterogeneous catalyst for the photo-degradation of methylene blue (MB). The highly negatively charged cavity of PCC-2 allows for the sequential encapsulation of the cationic methylene blue substrate and the Ru catalyst, which in turn significantly shortens the distance between them, yielding an increased possibility of MB degradation. Moreover, the encapsulated Ru catalyst dramatically outperformed its homogeneous counterpart in terms of overall degradation performance and recyclability.
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