石油化工高等学校学报

石油化工高等学校学报 ›› 2015, Vol. 28 ›› Issue (1): 7-11.DOI: 10.3969/j.issn.1006-396X.2015.01.002

• 石油化工 • 上一篇    下一篇

微/纳米Z n O绒球的制备及对混合污水的光降解

荣 华,  王富美,  王 岁,  党云鹏,  王 萍,  佟拉嘎   

  1.  (北京石油化工学院化学工程学院, 北京1 0 2 6 1 7)
  • 收稿日期:2014-09-23 修回日期:2014-11-21 出版日期:2015-02-25 发布日期:2015-03-03
  • 通讯作者: 佟拉嘎( 1 9 6 6 - ) , 男, 博士, 副教授, 从事纳米材料制备及光催化性能研究;E - m a i l : t o n g l a g a@b i p t . e d u. c n。
  • 作者简介:荣华( 1 9 6 6 - ) , 女, 高级实验师, 从事纳米材料制备、 表征方面的研究; E - m a i l : r o n g h u a@b i p t . e d u. c n。
  • 基金资助:
    国家级大学生创新创业计划项目资助( 2 0 1 4 J 0 0 0 8 6) 。

Preparation of Micro/Nano ZnO Pompons and Its Activity on  Photodegradation of Dyeing Sewage

(College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China)   

  • Received:2014-09-23 Revised:2014-11-21 Published:2015-02-25 Online:2015-03-03

摘要: 以自制的谷氨酸 - 氟硼酸( G l u B F 4) 离子液体水溶液为反应介质, 以物质的量比为1∶6的二水合醋酸 锌[ Z n( A c ) 2·2H2O] 和 N a OH为原料, 室温( 2 5℃, 2 0m i n) 制备前驱体, 再微波辅助加热( 8 0℃, 1 0m i n) 制备了纳 米氧化锌粉体, 获得了纳米结构微米尺寸Z n O绒球。利用场发射扫描电子显微镜( F E S EM) 、 X射线衍射( XR D) 、 比 表面积( B E T) 、 能谱( E D S) 等对产物进行了表征。结果表明, 所得产物为六方晶系纤锌矿结构, 粉体粒径2 0. 4n m, 绒 球比表面积为2 7. 6m2/ g。该纳米材料具有较高的光催化降解有机污染物活性。以紫外光为光源, 5 0m g微/纳米 Z n O绒球为光降解催化剂, 取5 0 0mL北京雪莲羊绒股份有限公司排污口混合印染污水进行光降解实验, 在3 0m i n 内光降解效率达到了1 0 0%, 催化剂可回收重复利用, 并对光降解机理进行了初步分析。

关键词: 离子液体, 单一形貌, 微/纳米Z n O绒球, 污水,  , 光催化降解

Abstract: Micro/nano ZnO with pomponlike shapes has been successfully synthesized by using Zn(Ac)2•2H2O and NaOH (mole ratio 1∶6) as the raw materials and the glutamate fluoboric acid ionic liquid aqueous solution as the reaction medium at the room temperature (25 ℃, 20 min) and then under microwave heating (80 ℃,10 min). The synthesized samples were characterized by field emission scanning electron microscopy combined with energy disperse Xray analysis (SEMEDS), Xray powder diffraction (XRD) and the BrunauerEmmettTeller (BET) analysis. The product had hexagonal (wurtzite) structure, the particle size of the powder was about 20.4 nm, and the specific surface area of the pomponlike ZnO was 27.6 m2/g, with high activity on the photocatalytic degradation of organic pollutants. The photodegradation experiments were conducted on mixed printing and dyeing sewage (500 mL) from drain outlets of Beijing SnowLotus Cashmere Co., Ltd., with ultraviolet light as the light source and 50 mg of micro/nano ZnO pompons as the photodegradation catalyst, giving a photodegradation efficiency of 100% within 30 min. Besides that, the catalyst was reusable. The photodegradation mechanism were also discussed.

Key words: Ionic liquid,    , Single morphology,    , Micro/nano ZnO,    ,  Sewage,    , Photodegradation

引用本文

荣 华, 王富美, 王 岁, 党云鹏, 王 萍, 佟拉嘎. 微/纳米Z n O绒球的制备及对混合污水的光降解[J]. 石油化工高等学校学报, 2015, 28(1): 7-11.

Rong Hua, Wang Fumei, Wang Sui, Dang Yunpeng,et al. Preparation of Micro/Nano ZnO Pompons and Its Activity on  Photodegradation of Dyeing Sewage [J]. Journal of Petrochemical Universities, 2015, 28(1): 7-11.

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