Ag/BiOI/C enhanced photocatalytic activity under visible light irradiation

The Ag/BiOI/C composite photocatalyst was synthesized by high-temperature tube furnace calcination method. The Ag/BiOI/C (0.5:2:3) sample showed the greater competence for the photocatalytic remove of the typical methylene blue dye compared with the pristine BiOI and BiOI/C under visible light exposure. The characterization was confirmed the Ag and C could synergistically enhance the photocatalytic performance. Among, the Ag and C worked as electron acceptors enhanced separation effectiveness of photo-induced electron-hole pairs and suppressed their recombination. Further, trapping experiments displayed that the center dot O-2(-) and h(+) were the major function in the photo-degradation of methylene blue. A possible mechanism was proposed for the novel photocatalyst.

Automated summary

The Ag/BiOI/C composite photocatalyst synthesized by high-temperature tube furnace calcination method exhibited superior photocatalytic performance in removing methylene blue dye under visible light exposure. The synergistic effect of Ag and C enhanced the separation of photo-induced electron-hole pairs and suppressed their recombination, with O-2(-) and h(+) playing a major role in the degradation of methylene blue. A possible mechanism for the novel photocatalyst was proposed based on trapping experiments.