Photocatalysts Fabricated by Depositing Ag on Co-g-C3N4 and Its Enhanced Visible-Light Photocatalytic Performance

Abstract

A novel photocatalyst, Ag/Co-g-C3N4, was synthesized by a simple photo-deposition method successfully to increase visible-light absorption efficiency and the separation rate of the photogenerated electron hole pairs. A series of characterization analysis were conducted including XRD, SEM, EDS, FT-IR, DRS and PL. The result of DRS shows that there was much visible-light absorption in Co-g-C3N4 compared with pristine g-C3N4. Cog-C3N4 and Co-g-C3N4 loaded with Ag showed a much lower photo-reduced carriers recombination rate according the data of PL. And the different contents of Ag were investigated in detail. The experiment of RhB visible-light degradation indicated the sequence of photocatalytic performances was: Ag/Co-g-C3N4> Co-g-C3N4> pure g-C3N4. The Ag/Co-gC3N4 in this work would be quite useful for removal of organic pollutants.