1. AgBrO3/Few-Layer g-C3N4 Composites: A Visible-Light-Driven Photocatalyst for Tetracycline Degradation
- Author
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Jia-Rui Zhang, Hui Wang, Tian-Long Chang, Jun-Zhang Su, Chen-Xu Zhang, Yun-Ning Jia, Xin Tong, Mi Zhang, Xiang-Feng Wu, and Yun-Xuan Fu
- Subjects
Light response ,Materials science ,Valence (chemistry) ,Tetracycline ,Composite number ,Biomedical Engineering ,Bioengineering ,02 engineering and technology ,General Chemistry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,medicine ,Photocatalysis ,General Materials Science ,Superoxide radicals ,Composite material ,0210 nano-technology ,Photocatalytic degradation ,medicine.drug ,Visible spectrum - Abstract
The AgBrO3/few-layer g-C3N4 composite photocatalyst has been developed via an in-situ synthetic method. The structure, morphology, light response range, separation and migration efficiency of the photogenerated electron–hole pairs and element valence state of the as-obtained samples have been characterized. The tetracycline was used to discuss the photocatalytic activities of the samples. The photocatalytic degradation mechanism of the as-obtained composites was also researched. The analysis results show that the photocatalytic degradation property of the asobtained composite photocatalyst appears to the tendency of first increasing and then decreasing with increasing the amount of AgBrO3 under visible light illumination. When the mass ratio of AgBrO3 to g-C3N4 is 4:3, in 60 min, the photocatalytic degradation efficiency of the as-obtained composites reaches the maximum of 79%. It is 37% and 45% higher than that of pure AgBrO3 and g-C3N4, respectively. Moreover, the separation and migration efficiency of the photogenerated electron–hole pairs of the as-prepared composites are also enhanced. In addition, superoxide radicals and holes are the dominant active species during the photocatalytic degradation process.
- Published
- 2020