One step synthesis of high-efficiency AgBr–Br–g-C(3)N(4) composite catalysts for photocatalytic H(2)O(2) production via two channel pathway

In this work, a two-component modified AgBr–Br–g-C(3)N(4) composite catalyst with outstanding photocatalytic H(2)O(2) production ability is synthesized. XRD, UV-Vis, N(2) adsorption, TEM, XPS, EPR and PL were used to characterize the obtained catalysts. The as-prepared AgBr–Br–g-C(3)N(4) composite catalyst shows the highest H(2)O(2) equilibrium concentration of 3.9 mmol L(−1), which is 7.8 and 19.5 times higher than that of GCN and AgBr. A “two channel pathway” is proposed for this reaction system which causes the remarkably promoted H(2)O(2) production ability. In addition, compared with another two-component modified catalyst, Ag–AgBr–g-C(3)N(4), AgBr–Br–g-C(3)N(4) composite catalyst displays the higher photocatalytic H(2)O(2) production ability and stability.