Dinh Thi Thuy Hang, Nguyen Dinh Bang, Nguyen Thanh Binh

Main Article Content

Abstract

The AgCl/Ag/g-C3N4 ternary composites were synthesized by simple methods. The characterizations (XRD, FTIR, TEM, UV-DRS, PL) indicated clearly the existence of Ag, AgCl, and g-C3N4 phases and visible light absorption ability of composites. The photocatalytic activity was evaluated by photoreducing CO2 to CH4. The obtained results showed that the composite 3AC-Ag-CN exhibited the highest activity with CH4 production of 3.38.10-2 mmol.g-1.h-1, which was ~7.5 times higher than that of g-C3N4. This activity enhancement was explained by their Z-scheme heterojunction structure.

Keywords: Graphitic carbon nitride, photoreduction, silver

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