3 years ago

RGO-Promoted All-Solid-State g-C3N4/BiVO4 Z-Scheme Heterostructure with Enhanced Photocatalytic Activity toward the Degradation of Antibiotics

RGO-Promoted All-Solid-State g-C3N4/BiVO4 Z-Scheme Heterostructure with Enhanced Photocatalytic Activity toward the Degradation of Antibiotics
Deli Jiang, Min Chen, Di Li, Leqiang Shao, Peng Xiao
A novel all-solid-state RGO/g-C3N4/BiVO4 Z-scheme heterostructure was prepared using a facile hydrothermal method. The as-obtained RGO/g-C3N4/BiVO4 Z-scheme heterostructure exhibited enhanced photocatalytic activity toward the degradation of tetracycline hydrochloride under visible-light irradiation, which was about 1.13, 1.16, and 1.41 times higher than those of binary RGO/g-C3N4, g-C3N4/BiVO4, and RGO/BiVO4, respectively. The enhanced photocatalytic performance can be ascribed to the synergistic effect between the Z-scheme charge-carrier separation and RGO electron mediator, where RGO serves as a promoter for accelerating charge separation at the heterojunction, thus further leading to the improved photocatalytic activity. It is anticipated that the construction of RGO/g-C3N4/BiVO4 Z-scheme heterostructures is an effective strategy for the development of high-performance photocatalysts for the degradation of tetracycline hydrochloride.

Publisher URL: http://dx.doi.org/10.1021/acs.iecr.7b01840

DOI: 10.1021/acs.iecr.7b01840

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