高等学校化学学报 ›› 2015, Vol. 36 ›› Issue (5): 955.doi: 10.7503/cjcu20141073

• 物理化学 • 上一篇    下一篇

多级结构BiOCl的可控制备及对药物废水的有效降解

赵晓霞1, 高晓亚2, 张小超2, 李瑞2, 王雅文2, 王韵芳2, 樊彩梅2()   

  1. 1. 太原科技大学化学与生物工程学院, 太原 030021
    2. 太原理工大学洁净化工研究所, 太原 030024
  • 收稿日期:2014-12-05 出版日期:2015-05-10 发布日期:2015-04-17
  • 作者简介:联系人简介: 樊彩梅, 女, 博士, 教授, 主要从事光催化水处理研究. E-mail: fancm@163.com
  • 基金资助:
    国家自然科学基金(批准号: 21176168, 21303116)资助

Tunable Synthesis of Hierarchical BiOCl Microspheres for Efficient Photocatalytic Degradation of Pharmaceutical Wastewater

ZHAO Xiaoxia1, GAO Xiaoya2, ZHANG Xiaochao2, LI Rui2, WANG Yawen2, WANG Yunfang2, FAN Caimei2,*()   

  1. 1. School of Chemical and Biological Engineering, Taiyuan University of Science and Technology, Taiyuan 030021, China
    2. Institute of Clean Technique for Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
  • Received:2014-12-05 Online:2015-05-10 Published:2015-04-17
  • Contact: FAN Caimei E-mail:fancm@163.com
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.21176168, 21303116)

摘要:

以BiCl3为原料, 二乙二醇(DEG)为介质, 尿素为沉淀剂, 采用溶剂热法合成了不同尺寸的多级结构BiOCl微纳米材料. 通过 X射线衍射仪(XRD)和扫描电子显微镜(SEM)对产物进行了表征. 结果表明, 沉淀剂用量和溶剂热时间对BiOCl的结晶特性和形貌尺寸有重要影响. 控制反应条件制得了粒径大小为1~5 μm的BiOCl多级微球. 降解药物废水测试结果表明, 所制备的催化剂均能有效降解卡马西平(CBZ)和磺胺甲唑(SMZ)溶液, 特别是溶剂热时间为30 min, 沉淀剂尿素与BiCl3的摩尔比为10∶1和15∶1时制得的光催化剂对CBZ和SMZ均表现出最好的光催化活性, 且降解率均高于TiO2(P25).

关键词: 可控合成, 氯氧化铋, 光催化, 卡马西平, 磺胺甲955/img_2.tif49.048.0唑

Abstract:

A series of hierarchical BiOCl microspheres with different sizes was prepared with a diethylene glycol(DEG) mediated solventhermal method using BiCl3 as precursor and urea as a precipitant. The obtained samples were characterized by powder X-ray diffraction(XRD) and scanning electron microscopy(SEM). The results suggest that the crystallinity and size could be influenced by precipitants dosage(molar ratio of urea to BiCl3) and solventhermal time. BiOCl microspheres with sizes of 1—5 μm were synthesized by tuning reaction conditions. The as-prepared BiOCl exhibited high photocatalytic efficiency towards the degradation of carbamazepine(CBZ) and sulfamethoxazole(SMZ) under UV light irradiation. Especially, BiOCl samples obtained at precipitants dosages of 10∶1 and 15∶1 with hydrothermal time of 30 min exhibited superior photocatalytic activity to TiO2(P25). The results indicate that the hierarchical BiOCl microspheres are promising candidate for the removal of the recalcitrant pharmaceutical contaminants.

Key words: Tunable synthesis, BiOCl, Photocatalysis, Carbamazepine(CBZ), Sulfamethoxazole(SMZ)

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