Preparation of Flower-Like Ag@AgBr/ZnO Photocatalyst and Photocatalytic Degradation Mechanism on Cefuroxime Sodium

Abstract

An Ag@AgBr/ZnO modified photocatalyst was prepared by a simple one-step hydrothermal method. The composites were well characterized by various analytical techniques, and the influence of an Ag@AgBr/ZnO system on the photocatalytic properties was also analyzed. The UV-vis diffuse reflectance spectra results clearly confirmed the red-shifted absorption edges transferred into the visible spectral region. The PL spectra results showed that Ag@AgBr/ZnO has a lower electron hole recombination rate than ZnO. With the cefuroxime sodium solution as the target pollutant, the mechanism of its catalytic effect and efficiency were studied. The results showed that the photocatalytic activity of Ag@AgBr/ZnO modified catalysts were greatly improved under visible light.