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第 35 卷第 9 期 精 细 化 工 Vol.35, No.9
201 8 年 9 月 FINE CHEMICALS Sept. 2018

功能材料
Bi O Br /BiOBr 的控制合成及其光催化性能
24
31
10
3
3*
1*
曾小星 1,2 ，万益群 ，弓晓峰 ，徐招弟
（1. 南昌大学 资源环境与化工学院，江西 南昌 330031；2. 南昌大学 光伏研究院，江西 南昌 330031；
3. 南昌大学 分析测试中心，江西 南昌 330031）

摘要：以十六烷基三甲基溴化铵（CTAB）和 Bi(NO 3 ) 3 ·5H 2 O 为原料，三乙醇胺（TEOA）为 pH 调节剂，通过
溶剂热法制得 Bi 24 O 31 Br 10 /BiOBr。运用 XRD、SEM、BET、UV-vis 等手段对其结构进行了表征。结果表明：改
变 TEOA 的体积，调节 Br 和 Bi 物质的量比可调控所得物质的组成、微结构和形貌。通过在可见光（λ≥420 nm）
下降解环丙沙星（CIP）来评价所制得样品的光催化性能。结果表明，当 TEOA 的体积为 8 mL、Br 和 Bi 物质
2
的量比为 1.0 : 1.0 时，所得样品 Bi 24 O 31 Br 10 /BiOBr (S-1.0-8)具有最佳的光催化性能，比表面积为 28.20 m /g，CIP
降解率为 97.00%，反应速率常数为不加 TEOA 所得纯 BiOBr 的 3.93 倍。S-1.0-8 最佳的光催化性能除了与光生
电子和空穴的迁移有关外，还归因于其高的比表面积和表面丰富的氧空穴。
关键词：溶剂热法；环丙沙星；三乙醇胺；反应速率常数；功能材料
中图分类号：TB34 文献标识码：A 文章编号：1003-5214 (2018) 09-1478-08

Controllable Synthesis of Bi 24O 31Br 10/BiOBr and Its
Photocatalytic Performance

3
1,2
3*
1*
ZENG Xiao-xing , WAN Yi-qun , GONG Xiao-feng , XU Zhao-di
（1. School of Resource Environmental & Chemical Engineering, Nanchang University, Nanchang 330031, Jiangxi.
China; 2. Institute of Photovoltaics, Nanchang University, Nanchang 330031, Jiangxi, China; 3. Center of Analysis and
Testing, Nanchang University, Nanchang 330031, Jiangxi, China）
Abstract: Bi 24O 31Br 10/BiOBr composite was synthesized by a facile solvothermal method with
cetyltrimethyl ammonium bromide (CTAB) and Bi(NO 3) 3·5H 2O as materials, triethanolamine (TEOA) as
pH regulator and characterized by X-ray diffractometer (XRD), scanning electron microscope (SEM),
specific surface area (BET) measurement and UV-vis absorption spectrometer. The results showed that the
composition, microstructure and morphology of sample could be easily controlled by tuning the amount of
TEOA and the atomic ratio of bromide to bismuth in the reaction system. The photocatalytic activities of
samples were evaluated by the degradation of ciprofloxacin (CIP) under visible light irradiation (λ≥420 nm).
When the volume of TEOA was 8 mL and the molar ratio of bromide to bismuth source was 1.0 : 1.0, the
2
obtained Bi 24O 31Br 10/BiOBr (S-1.0-8) composite with a BET surface area of 28.20 m /g exhibited the
highest photocatalytic activity, and the degration of CIP was 97.00%. The reaction rate constant of
composite was about 3.93 times higher than that of pure BiOBr, which was mainly attributed to the charge
transfer between BiOBr and Bi 24O 31Br 10. Besides, the large specific surface area of material and abundant
oxygen vacancies on the surface of composite also contributed to the improvement of photocatalytic
activity.
Key words: solvothermal method; ciprofloxacin; triethanolamine; reaction rate constant;functional
materials
Foundation items: National Natural Science Foundation of China (41761095,21563020); Project of Science

收稿日期：2017-08-20; 定用日期：2017-12-12; DOI: 10.13550/j.jxhg.20170682
基金项目：国家自然科学基金（41761095，21563020）；江西省高等学校科技落地计划项目（KJLD 14007）
作者简介：曾小星（1982—），女，实验师，博士。联系人：弓晓峰（1962—），女，教授，博士生导师，E-mail：xfgong@ncu.edu.cn；
徐招弟（1976—），女，高级实验师，E-mail：xuzhaodi@ncu.edu.cn。