Photocatalytic properties of Zinc selenide doped with cobalt oxide nanocomposite

In this work, ZnSe/Co₃O₄ was synthesized by hydrothermal method. The samples were characterized by XRD, SEM, TEM, EDS, XPS, BET, UV–vis techniques. The activity of the composite photocatalytic materials was detected by visible light catalytic degradation of methylene blue (MB). The catalytic effect was the most obvious when the composite ratio was 1:10, with the removal rate reaching to 93.6% of 10 ?mg/L MB within 120 ?min of visible light irradiation. After further analysis of the catalyst, ZnSe/Co₃O₄ has a broader application prospect due to its high efficiency and low price.