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BiOCl/CdSe复合材料的制备及可见光催化性能研究

Preparation and Visible-Light Catalytic Performance of BiOCl/CdSe Composites

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【作者】 陈立功孙明明王博威李佳益刘帅方旺旺

【Author】 Chen Ligong;Sun Mingming;Wang Bowei;Li Jiayi;Liu Shuai;Fang Wangwang;School of Chemical Engineering and Technology,Tianjin University;Zhejiang Shaoxing Institute of Tianjin University;Guangdong Laboratory of Chemistry and Fine Chemical Industry Jieyang Center;Tianjin Engineering Research Center of Functional Fine Chemicals;Zhejiang Shaoxing Xingxin New Materials Co.,Ltd.;

【通讯作者】 王博威;

【机构】 天津大学化工学院天津大学浙江绍兴研究院化学与精细化工广东省实验室揭阳分中心天津市功能精细化学品技术工程中心浙江绍兴兴欣新材料股份有限公司

【摘要】 异质结的构建是提高光催化剂性能的有效途径.通过两步法,以BiOCl为基底原位生长CdSe纳米颗粒成功制备了一系列BiOCl/CdSe复合材料.利用XRD、SEM、TEM等对材料进行表征,结果证明CdSe在BiOCl表面均匀分布,并且BiOCl与CdSe之间成功构建了有效的异质结.在可见光照射下,与纯BiOCl和CdSe相比,复合材料在光催化降解四环素方面表现出优异的性能.其中,BC-1在1 h内可有效降解81.7%的四环素.更重要的是,通过循环套用证明,该复合材料重复使用4次后仍有较高的稳定性.自由基捕获实验证明,空穴(h+)和超氧自由基(·O2-)在降解过程中起着主要作用.

【Abstract】 The construction of a heterojunction is an effective strategy to improve the performance of photocatalysts.A series of BiOCl/CdSe composites were successfully prepared by using BiOCl as a substrate for the in situ growth of Cd Se nanoparticles in a two-step process. The composites were characterized via XRD,SEM,and TEM. The results showed that CdSe was evenly distributed on the BiOCl surface along with an effective heterojunction between BiOCl and Cd Se. Compared with pure Bi OCl and Cd Se,the composites exhibited excellent photocatalytic degradation of tetracycline under visible-light irradiation. Among them,BC-1 effectively degraded 81.7% of tetracycline within 1 h.More importantly,the composite was proved to exhibit a high stability after four cycles. Free radical capture experiments showed that holes(h+) and superoxide radicals(·O2-)played an important role in the degradation process.

【基金】 国家自然科学基金资助项目(21978208);中国博士后科学基金资助项目(2020T130465);河北省科学技术厅资助项目(216Z1403G);天津市绿色化学工程重点实验室开放项目(GCEPE201901012)~~
  • 【文献出处】 天津大学学报(自然科学与工程技术版) ,Journal of Tianjin University(Science and Technology) , 编辑部邮箱 ,2023年04期
  • 【分类号】O643.36;TB332;X703
  • 【下载频次】119
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