Preparation of Bi2O2CO3/BiOBr heterojunction and its application in photocatalytic degradation of tetracycline hydrochloride under visible light irradiation
TANG Xin-de, WANG Zheng-rong, LIU Ning
College of Materials and Chemical Engineering, Hunan Institute of Engineering, Hengyang 421002, China
Abstract: Bi2O2CO3 nanosheets are synthesized by coprecipitation method.Bi2O2CO3/BiOBr heterojunctions are then synthesized by using a chemical etching method.The phase,morphology and optical absorption performance of the heterojunctions are characterized by XRD,TEM and UV-Vis DRS,respectively,and its photocatalytic activity is evaluated through degrading tetracycline hydrochloride under visible light irradiation.It is found that the as-prepared Bi2O2CO3/BiOBr heterojunctions exhibit an enhanced photocatalytic activity than pure Bi2O2CO3 or BiOBr,which may be attributed to the efficient separation of electron-hole pairs caused by the formation of heterojunction between Bi2O2CO3 and BiOBr.Bi2O2CO3/BiOBr heterojunctions show high stability.Superoxide radicals are main active species in the degradation process of tetracycline hydrochloride under visible light irradiation.
唐新德, 王正容, 刘宁. Bi2O2CO3/BiOBr异质结的制备及其可见光降解盐酸四环素的研究[J]. 现代化工, 2019, 39(11): 137-140.
TANG Xin-de, WANG Zheng-rong, LIU Ning. Preparation of Bi2O2CO3/BiOBr heterojunction and its application in photocatalytic degradation of tetracycline hydrochloride under visible light irradiation. Modern Chemical Industry, 2019, 39(11): 137-140.
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