| Abstrakt: |
Heterogeneous photocatalysis has become one of the most potential technologies due to its ability to alleviate energy shortages and environmental pollution. In this work, a heterojunction photocatalyst of Ag2WO4/g-C3N4 was synthesized via simple deposition method. The as-prepared samples were characterized by SEM, HRTEM, X-ray photoelectron spectroscopy, UV-vis, photoluminescence, and photocurrent measurements. The photocatalytic performance of the heterojunction photocatalyst for the degradation of tetracycline under visible light was investigated. It is demonstrated in our experiment that by loading a small amount of Ag2WO4 nanoparticles onto g-C3N4, the photocatalytic activity can be improved for tetracycline degradation. The as-prepared heterojunctions have fast interfacial charge transfer speed and exhibit enhanced visible-light-driven photocatalytic activity for tetracycline degradation. Under the irradiation of visible light, the photocatalytic degradation efficiency of TC (tetracycline) by using Ag2WO4/g-C3N4 heterojunction (3AW-CN) prepared under optimized conditions is 1.08 and 0.63 times higher than that by using pure g-C3N4 and pure Ag2WO4, respectively. The significantly enhanced photocatalytic activity is mainly due to the fact that silver nanoparticles could act as reservoirs and donors for electrons, thereby effectively regulating electron transfer and promoting charge separation. [ABSTRACT FROM AUTHOR] |
