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【Domestic Papers】Highly Efficient Photocatalytic Degradation of TC-HCl by Morphology Regulation of Ga₂O₃ Nanostructures
日期：2026-02-03阅读：27
Researchers from the Northwest University have published a dissertation titled "Highly Efficient Photocatalytic Degradation of TC-HCl by Morphology Regulation of Ga₂O₃ Nanostructures" in LANGMUIR.
Abstract
Tetracycline antibiotic contaminants have attracted more and more attention due to their high toxicity and the difficulty of their natural decomposition. Here, we have successfully regulated the morphologies of Ga2O3 photocatalysts (Ga2O3 QDs, Ga2O3 hollow spheres, and Ga2O3 micrometer rods) through a simple solvothermal and hydrothermal method and investigated their photocatalytic degradation of tetracycline hydrochloride (TC-HCl). It was found that Ga2O3 QDs showed the best photocatalytic performance due to their large specific surface area (61.1838 m2 g–1), wide bandgap (4.62 eV), etc. After the preparation conditions had been optimized, the Ga2O3 QDs synthesized at 240 °C and 10 h exhibited the best performance in degrading TC-HCl; after 500 W xenon lamp irradiation for 20 min, the degradation efficiency can reach 99% and the degradation rate reached 0.2988 min–1. By trapping experiments, the main active substances in the degradation of TC-HCl by Ga2O3 were identified as a superoxide radical (•O2) and a hole (h+). This study provides a new idea of catalyst morphology regulation and a new method for efficient photocatalytic degradation of TC-HCl.
DOI:
https://doi.org/10.1021/acs.langmuir.5c03557
