B-g-C_(3)N_(4)/BiOBr复合材料光催化降解盐酸四环素的研究  

Study on Photocatalytic Degradation of Tetracycline Hydrochloride by B-g-C_(3)N_(4)/BiOBr Composites

作　　者：刘备 李明 刘显 王博海 朱雷[1] 汪恂[1] LIU Bei;LI Ming;LIU Xian;WANG Bohai;ZHU Lei;WANG Xun(College of Urban Construction,Wuhan University of Science and Technology,Wuhan 430065,China;Hubei General Institute of Planning and Design Co.,Ltd.,Wuhan 430071,China)

机构地区：[1]武汉科技大学城市建设学院,湖北武汉430065 [2]湖北省规划设计研究总院有限责任公司,湖北武汉430071

出　　处：《环境科学与技术》2024年第3期199-207,共9页Environmental Science & Technology

基　　金：国家自然科学基金项目:基于选择性光催化钛-铁基复合纳米材料协同降解机制研究(51672196)。

摘　　要：文章通过研磨和煅烧合成掺杂硼的g-C_(3)N_(4)(BCN-n),再通过溶剂热法制备硼掺杂g-C_(3)N_(4)/溴氧铋(BCN-n/BiOBr)材料,用于光催化降解盐酸四环素(TCH)污染物。文章探究了不同复合比、pH值、催化剂投加量及不同污染物浓度下BCN-n/BiOBr材料的光催化性能,并通过TEM、XRD等对材料进行表征分析。实验结果证明,BCN-2(简称BCN)∶BiOBr最佳复合质量比为2∶1。在盐酸四环素溶液浓度为20 mg/L,原液pH=5.5,催化剂投加量0.2 g/L的条件下,BCN/BiOBr(2∶1)材料对盐酸四环素的降解率达到95.1%,与相同条件下BCN和BiOBr材料相比,降解率分别提高了10.7%和14.0%。BCN/BiOBr光催化剂是一种有前景的降解TCH的光催化材料。Boron-doped g-C_(3)N_(4)(BCN-n)was synthesized by grinding and calcination,and then boron-doped g-C_(3)N_(4)/bismuth oxybromide(BCN-n/BiOBr)materials were prepared by solvothermal method for the photocatalytic degradation of tetracy⁃cline hydrochloride(TCH)pollutants.The photocatalytic performance of BCN-n/BiOBr materials was investigated under dif⁃ferent composite ratios,pH,catalyst dosages and different pollutant concentrations,and the materials were characterized and analyzed by TEM and XRD.The experimental results proved that the optimal composite mass ratio of BCN-2(BCN)∶BiOBr was 2∶1.Under the conditions of tetracycline hydrochloride solution concentration of 20 mg/L,stock solution pH 5.5,and catalyst dosage of 0.2 g/L,the degradation rate of tetracycline hydrochloride by BCN/BiOBr(2∶1)material reached 95.1%,compared with BCN and BiOBr materials under the same conditions,the degradation rates increased by 10.7%and 14.0%,respectively.The BCN/BiOBr photocatalyst is a promising photocatalytic material for the degradation of TCH.

关 键 词：B掺杂g-C_(3)N_(4)/BiOBr复合材料 盐酸四环素 光催化 

分 类 号：X703[环境科学与工程—环境工程]