Biomass carbon modified Z-scheme g-C3N4/Co3O4 heterojunction with enhanced visible-light photocatalytic activity

A novel biomass carbon (BC) modified Z-scheme g-C3N4/Co3O4 heterojunction photocatalyst (BC/g-C3N4/Co3O4) has been constructed via a facile approach. In addition, various kinds of characterization methods, including TEM, XPS, UV-vis DRS, VSM, photoluminescence spectra, photocurrent response, electrochemical impedance spectroscopy, etc. are applied to investigate the morphology structure, optical property, magnetic properties and electronic properties of BC/g-C3N4/Co3O4. The BC/g-C3N4/Co3O4 is applied as novel photocatalyst to degrade various pollutants and it exhibits remarkable photocatalytic activity and stability as compared to pure g-C3N4 and Co3O4. Furthermore, the BC/g-C3N4/Co3O4 can be effectively separated from solution in favor of practical applications.