Facile preparation of ZnO:g-C3N4 heterostructures and their application in amiloride photodegradation and CO2 photoreduction

Semiconductor heterojunctions are interesting strategies for the development of efficient photocatalysts. In this paper we report the synthesis of ZnO:g-C3N4 heterostructures with different percentages of g-C3N4 (15%, 50% and 85%) using an easy and new method: precipitation of ZnO by alkaline solution at room temperature on g-C3N4 surface. The nucleation of ZnO nanoparticles had effective interaction on the g-C3N4 surface, showing good crystallinity and uniformity, which improved the heterostructure stability and the separation of photogenerated charge carriers, consequently increasing the photo-catalytic efficiency for both the degradation of the amiloride (AML) drug and the conversion of CO2 into products such as CO, CH4 and C2H4. (C) 2020 Elsevier B.V. All rights reserved.

Automated summary

The research explores an effective method for synthesizing ZnO:g-C3N4 heterostructures, which can potentially play a significant role in drug degradation and CO2 conversion by improving the stability of heterostructures and the separation of photogenerated charge carriers, thus increasing the photocatalytic efficiency.