Abstract
Herein, we report a novel trifluoromethanesulfonic acid vapor-assisted solid phase synthetic method to construct nanoporous covalent triazine frameworks with highly ordered hollow interconnected pores under mild reaction conditions.
Highlights
Hollow nanoporous covalent triazine frameworks via acid vapor-assisted solid phase synthesis for enhanced visible light photoactivity†
The limited utilization of Covalent triazine frameworks (CTFs) in photocatalysis is likely caused by the harsh synthesis condition, which could lead to partial carbonization of the polymer, making the conduction band (CB) and valence band (VB)
The results suggested that solid vapor synthesis under mild reaction conditions was an efficient preparation method of nanoporous CTFs with de ned optical and electronic property and ordered hollow structure
Summary
Hollow nanoporous covalent triazine frameworks via acid vapor-assisted solid phase synthesis for enhanced visible light photoactivity†. We report a novel trifluoromethanesulfonic acid vapor-assisted solid phase synthetic method to construct nanoporous covalent triazine frameworks with highly ordered hollow interconnected pores under mild reaction conditions. In addition to the chemical composition variation, morphology control of heterogeneous photocatalysts has been considered an important tool for optimizing catalytic efficiency.[20,21,22] Among various morphologies, hollow architectures are of particular interest They have been shown to facilitate mass transfer and increase absorption efficiency by multiple light re ection during the catalytic process and subsequently enhance photocatalytic activity.[23] The liquid-phase reaction conditions of CTFs, either in molten ZnCl2 or tri uoromethanesulfonic acid (TfOH) solution, are not advantageous to construct highly ordered hollow nanostructures. A photoactive and electron donor–acceptor type monomer, 4,40-(benzothiadiazole-4,7-diyl)dibenzonitrile (BT–Ph2–CN2), in solid phase mixed with tightly packed SiO2
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