4.6 Article

One step synthesis of high-efficiency AgBr-Br-g-C3N4 composite catalysts for photocatalytic H2O2 production via two channel pathway

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RSC ADVANCES
卷 8, 期 64, 页码 36903-36909

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ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ra07749e

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In this work, a two-component modified AgBr-Br-g-C3N4 composite catalyst with outstanding photocatalytic H2O2 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-C3N4 composite catalyst shows the highest H2O2 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 H2O2 production ability. In addition, compared with another two-component modified catalyst, Ag-AgBr-g-C3N4, AgBr-Br-g-C3N4 composite catalyst displays the higher photocatalytic H2O2 production ability and stability.

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