Anderson polyoxometalate built-in covalent organic frameworks for enhancing catalytic performances
2020
Covalent organic frameworks (COFs) have functional synthon, diverse structure and feature-rich functionality. Herein, the combination of linear linker NH2-{MMo6}-NH2 with 4-connected tetrahedral tetrakis(4-formylphenyl)silicon building units produced three isostructural complexes M-Anderson-COFs with 3-interpenetrated diamondoid network. Among them, Mn-Anderson-COF exhibited the highest catalytic activity in the photodegradation of RhB and MB in water. The addition of different scavengers demonstrated that 1O2 and H2O2 were primary reactive species to degrade the dyes. Moreover, using M-Anderson-COF as catalyst, organic sulfides were almost completely oxidized with 100% sulfoxide/sulfone selectivity.
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