Synthesis of ZnO/Ag2O nanocomposites as a highly efficient visible active photocatalyst for toxic dyes

Abstract

By combining hydrothermal technology and deposition, it is possible to synthesize ZnO/Ag2O nanocomposites simply and effectively. The structures, compositions and morphologies of ZnO/Ag2O composites were characterized by XRD, EDS, SEM and TEM. The photocatalytic performance of the photocatalyst for degrading methylene blue (MB) has been evaluated under visible light. Specifically, The results showed that the most photocatalytic activity of MB in ZnO/Ag2O nanocomposites is two times higher than pure ZnO. Under irradiation with light. The increase in photocatalytic activity is due to the formation of heterostructures between Ag2O and ZnO, strong visible light absorption and better separation efficiency of photo-induced e––h+ pairs. In addition, the nanocomposite ZnO/Ag2O appeared to be completely stable against photodegradation under wight light. Finally, after washing dyes on the surface with high efficiency, the photooxidation process was repeated four times in the same ZnO/Ag2O nanocomposite.

Imprint

Fatima Allawi. Synthesis of ZnO/Ag2O nanocomposites as a highly efficient visible active photocatalyst for toxic dyes. Cardiometry; Issue 30; February 2024; p.119-126; DOI: 10.18137/cardiometry.2024.30.119126; Available from: https://www.cardiometry.net/issues/no30-february-2024/synthesis-nanocomposites