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Issue 47, 2020, Issue in Progress
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Interfacial engineering by creating Cu-based ternary heterostructures on C3N4 tubes towards enhanced photocatalytic oxidative coupling of benzylamines

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Abstract

Benzylamine coupling is a very important reaction for the synthesis of imine but still faces many challenges. Herein, we present a highly effective strategy towards the coupling reaction by using environmentally friendly catalysts. These catalysts are composed of Cu/Cu2O/Cu3N heterostructures supported by C3N4 tubes and the composites were synthesized by one-step hydrothermal treatment followed by calcination. Cu2O, Cu3N, and C3N4 all are responsive to visible light and the heterojunction formed can greatly enhance the charge separation. When used as photocatalysts for oxidative self-coupling of benzylamine at a low temperature of 323 K in air, Cu/Cu2O/Cu3N/C3N4 was able to give conversion and selectivity values of up to 99% and 98%, respectively. The high efficiency of the catalysts is attributable to their ability to generate large quantities of free radicals (such as ·OH and ·O2) under visible-light irradiation.

Graphical abstract: Interfacial engineering by creating Cu-based ternary heterostructures on C3N4 tubes towards enhanced photocatalytic oxidative coupling of benzylamines

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Supplementary files

Article information


Submitted
08 Apr 2020
Accepted
18 Jul 2020
First published
28 Jul 2020

This article is Open Access

RSC Adv., 2020,10, 28059-28065
Article type
Paper

Interfacial engineering by creating Cu-based ternary heterostructures on C3N4 tubes towards enhanced photocatalytic oxidative coupling of benzylamines

Y. Fu, M. Zheng, Q. Li, L. Zhang, S. Wang, V. V. Kondratiev and B. Jiang, RSC Adv., 2020, 10, 28059
DOI: 10.1039/D0RA03164J

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