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202202002.pdf
文章编号： 1672-6987（2022）02-0014-06； DOI： 10.16351/j.1672-6987.2022.02.002
罗时梓， 肖逸帆， 丁婷婷， 肖新颜*（华南理工大学 化学与化工学院，广东 广州 510000）
摘要： 采用水热法合成Bi4O5Br2纳米片的基础上，利用聚乙烯吡咯烷酮（PVP）辅助水热法合成了Bi4O5Br2/BiOCl复合光催化剂。通过X射线衍射光谱技术（XRD）、冷场发射扫描电子显微镜（SEM）、紫外-漫反射光谱（UV-vis DRS）、氮气吸-脱附等温技术（BET）、光电流响应和电化学阻抗（EIS）等测试手段对所制备光催化剂的结构与性能进行了表征。分别以罗丹明B（RhB）和四环素（TC）为目标污染物评价催化剂的光催化活性。结果表明：Bi4O5Br2与BiOCl复合后，大大增加了比表面积，提供了更多的活性位点，从而导致复合物的光催化活性显著提升。
关键词： Bi4O5Br2纳米片； Bi4O5Br2/BiOCl复合光催化剂； 光催化降解; 有机污染物
中图分类号： O 614文献标志码： A
引用格式： 罗时梓， 肖逸帆， 丁婷婷， 等. Bi4O5Br2/BiOCl复合光催化剂的制备及其降解有机污染物的性能［J］. 青岛科技大学学报(自然科学版), 2022, 43(2): 14-19.
LUO Shizi, XIAO Yifan, DING Tingting, et al. Preparation of Bi4O5Br2/BiOCl composite photocatalyst and its performance for degradation of organic pollutant［J］. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2022， 43（2）： 14-19.
Preparation of Bi4O5Br2/BiOCl Composite Photocatalyst and Its Performance for Degradation of Organic PollutantLUO Shizi, XIAO Yifan, DING Tingting, XIAO Xinyan
（College of Chemistry and Chemical Engineering， South China University of Technology， Guangzhou 510000， China）
Abstract: Bi4O5Br2 nanosheets were synthesized by hydrothermal method first, and then Bi4O5Br2/BiOCl composite photocatalysts were synthesized with the assistance of PVP. Various characterization methods, such as X-ray diffraction (XRD), scanning electron microscopy (SEM), UV-vis diffuse reflectance spectroscopy (UV-vis DRS), nitrogen adsorption-desorption isotherm (BET), transient photocurrent response and electrochemical impedance spectroscopy (EIS) were used to characterized the structure and properties of the photocatalyst. The photocatalytic activity of the catalysts was evaluated with rhodamine B (RhB) and tetracycline (TC) as the target degradation product, respectively. The results showed that Bi4O5Br2/BiOCl composite had larger specific surface area and provided more active sites compared with Bi4O5Br2 and BiOCl, which greatly improve photocatalytic activity.
Key words: Bi4O5Br2 nanosheets; Bi4O5Br2/BiOCl composite photocatalyst; photocatalytic degradation; organic pollutant
收稿日期： 2021-04-06
基金项目： 国家自然科学基金项目(21376099,21878115)；广东省基础与应用基础研究基金项目(2021A1515010245).
作者简介： 罗时梓(1996—)，男，硕士研究生.*通信联系人.
