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现代化工  2019, Vol. 39 Issue (11): 137-140    DOI: 10.16606/j.cnki.issn0253-4320.2019.11.029
  科研与开发 本期目录 | 过刊浏览 | 高级检索 |
Bi2O2CO3/BiOBr异质结的制备及其可见光降解盐酸四环素的研究
唐新德, 王正容, 刘宁
湖南工学院材料与化学工程学院, 湖南 衡阳 421002
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
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摘要 通过共沉淀法制备Bi2O2CO3纳米片,采用化学蚀刻法制备异质结型光催化剂Bi2O2CO3/BiOBr。利用XRD、TEM和UV-Vis DRS等手段对其物相、形貌及光吸收性能进行表征,并对其可见光降解盐酸四环素溶液的性能和稳定性进行了评估。结果表明,与纯Bi2O2CO3和BiOBr相比,异质结光催化剂Bi2O2CO3/BiOBr展现了增强的可见光降解活性,这归因于Bi2O2CO3与BiOBr之间异质结的形成有效分离了光生电子和空穴。Bi2O2CO3/BiOBr具有较高的稳定性,其在可见光降解盐酸四环素过程中的主要活性物种是超氧自由基。
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唐新德
王正容
刘宁
关键词:  Bi2O2CO3/BiOBr  异质结  光降解  盐酸四环素    
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.
Key words:  Bi2O2CO3/BiOBr    heterojunction    photo-degradation    tetracycline hydrochloride
收稿日期:  2019-01-16      修回日期:  2019-09-08           出版日期:  2019-11-20
O643.32  
  TB39  
基金资助: 湖南省自然科学基金项目(2015JJ2043);湖南省应用特色学科材料科学与工程学科资助项目([2018]469)
通讯作者:  唐新德(1973-),男,博士,教授,主要从事功能催化材料的制备与性能研究,通讯联系人,0734-3452163,txd738011@126.com。    E-mail:  txd738011@126.com
引用本文:    
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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https://www.xdhg.com.cn/CN/10.16606/j.cnki.issn0253-4320.2019.11.029  或          https://www.xdhg.com.cn/CN/Y2019/V39/I11/137
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