Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/77909
Title: Effect of pH on the microstructure of β-Ga2O3 and its enhanced photocatalytic activity for antibiotic degradation
Authors: Liu, J
Lu, W 
Zhong, Q
Wu, H
Li, Y
Li, L
Wang, Z
Keywords: Ga2O3
Metronidazole
Oxygen vacancy
Photocatalysis
Tetracycline
Issue Date: 2018
Publisher: Academic Press
Source: Journal of colloid and interface science, 2018, v. 519, p. 255-262 How to cite?
Journal: Journal of colloid and interface science 
Abstract: Semiconductor photocatalysis has become the focus of recent research on antibiotic treatment because it is a green and efficient technology. In this study, α-GaOOH with several novel microstructures has been synthesized at a low temperature and its subsequent thermal transformation. The influence of pH on the synthesis of α-GaOOH is studied, and the results indicate that pH played an important role in the microstructures of α-GaOOH and β-Ga2O3. All Ga2O3 samples possess macro-mesoporous network structures and exhibits a remarkable photocatalytic activity for antibiotic degradation. The photoelectron chemical tests show that the separation efficiency of photogenerated charge carriers of Ga2O3-7.0 is higher than that of other Ga2O3. The enhanced photocatalytic activity of Ga2O3-7.0 is mainly ascribed to its morphology and oxygen vacancy. The active species trapping and photoluminescence measurement experiments indicate that [rad]OH and [rad]O2 − are the major active species contributing to the photocatalytic process. This study will bring about the potential application in treatment of the antibiotic pollutants.
URI: http://hdl.handle.net/10397/77909
ISSN: 0021-9797
EISSN: 1095-7103
DOI: 10.1016/j.jcis.2018.02.070
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