首页|One-pot Synthesis of MoO3/PI Composite with Enhanced Photocatalytic Performance for Oxidative Coupling of Amines to Imines
One-pot Synthesis of MoO3/PI Composite with Enhanced Photocatalytic Performance for Oxidative Coupling of Amines to Imines
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Organic-inorganic MoO3/PI(MoPI)composites were prepared using a simple one-pot thermal copolymerization method.The resulting composites exhibited enhanced photocatalytic activity for the selective oxidation of benzylamine to N-benzylidene benzylamine(N-BDBA)in ambient air under simulated solar light irradiation compared to pristine MoO3 or polyimide(PI).In particular,the MoPI composite with a 0.3:1 molar ratio of Mo to melamine,referred to as MoPI-0.3,demonstrated the best performance in the photo-oxidation of benzylamine,achieving a benzylamine conversion of 95%with a N-BDBA selectivity exceeding 99%after 3 h irradiation.The enhanced photocatalytic activity of the MoPI-0.3 catalyst was attributed to the formation of a direct Z-scheme heterojunction between MoO3 and PI,facilitating more efficient separation of the photoinduced electrons and holes.Additionally,the MoPI-0.3 composite maintained considerably high activity over four consecutive cycles,highlighting its good stability and recyclability.Furthermore,the MoPI-0.3 composite could photo-oxidize benzylamine derivatives and heterocyclic amines to their corresponding imines,demonstrating the universal applicability of this composite catalyst.
Zhao Wenjie、Du Chengxin、Song Yu、Zhou Yafen、Wang Qing、Zhou Limei、Xu Bin
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Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province,College of Chemistry and Chemical Engineering,China West Normal University,Nanchong,China
Key Laboratory of Green Chemistry of Sichuan Institutes of Higher Education,Sichuan University of Science&Engineering,Zigong,China
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