Photocatalytic Performance of α- and β-Ga2O3 for the Degradation of Tetracycline Hydrochloride in Water

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摘要 α- and β-Ga2O3 were prepared via a precipitation method. The as-prepared α- and β-Ga2O3 were characterized by X-ray diffraction (XRD), N2-sorption BET surface area, UV-vis diffuse reflectance spectra (DRS), photoluminescence spectroscopy (PL) and electron spin resonancespectroscopy (ESR). The photocatalytic activities of Ga2O3 were evaluated by the photocatalytic degradation of tetracycline sydrochloride solution. The results showed that the photocatalytic activity of β-Ga2O3 was higher than that of α-Ga2O3 and β-Ga2O3 obtained at the calcination temperature of 900 ºC, which showed the best photocatalytic activity. The reasons for the differences in photocatalytic activity of Ga2O3 are discussed in terms of crystallinity, surface area, crystals and electronic structures.

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	李国平
	翁文
	李飞明

关键词 ： Ga2O3, tetracycline hydrochloride, photocatalysis

Abstract：α- and β-Ga2O3 were prepared via a precipitation method. The as-prepared α- and β-Ga2O3 were characterized by X-ray diffraction (XRD), N2-sorption BET surface area, UV-vis diffuse reflectance spectra (DRS), photoluminescence spectroscopy (PL) and electron spin resonancespectroscopy (ESR). The photocatalytic activities of Ga2O3 were evaluated by the photocatalytic degradation of tetracycline sydrochloride solution. The results showed that the photocatalytic activity of β-Ga2O3 was higher than that of α-Ga2O3 and β-Ga2O3 obtained at the calcination temperature of 900 ºC, which showed the best photocatalytic activity. The reasons for the differences in photocatalytic activity of Ga2O3 are discussed in terms of crystallinity, surface area, crystals and electronic structures.

Key words： Ga2O3 tetracycline hydrochloride photocatalysis

收稿日期: 2015-09-28 出版日期: 2015-11-11

基金资助:This work was supported by the Funds of Department of Education of Fujian province (No. JA14199)

通讯作者: 545194760@qq.com E-mail: 545194760@qq.com

引用本文:

李国平;翁文;李飞明. Photocatalytic Performance of α- and β-Ga2O3 for the Degradation of Tetracycline Hydrochloride in Water[J]. 结构化学, 2015, 34(11): 1779-1785.
LI Guo-Ping;WENG Wen;LI Fei-Ming. Photocatalytic Performance of α- and β-Ga2O3 for the Degradation of Tetracycline Hydrochloride in Water. CHINESE JOURNAL OF STRUCTURAL CHEMISTRY, 2015, 34(11): 1779-1785.

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http://manu30.magtech.com.cn/jghx/CN/ 或 http://manu30.magtech.com.cn/jghx/CN/Y2015/V34/I11/1779

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