高等学校化学学报 ›› 2012, Vol. 33 ›› Issue (06): 1264.doi: 10.3969/j.issn.0251-0790.2012.06.024

• 物理化学 • 上一篇    下一篇

CTAB作用下纳米复合材料Ag/ZnO-SnO2 的制备与光催化降解罗丹明B

李莉, 禚娜, 高宇, 赵月红, 李恩帅, 赵立杰   

  1. 齐齐哈尔大学化学与化学工程学院, 齐齐哈尔 161006
  • 收稿日期:2012-01-12 出版日期:2012-06-10 发布日期:2012-06-10
  • 通讯作者: 李 莉, 女, 博士, 教授, 主要从事纳米复合材料的制备与光催化性能研究. E-mail: qqhrll@163.com E-mail:qqhrll@163.com
  • 基金资助:

    黑龙江省自然科学基金(批准号: B201200556)、黑龙江省教育厅科学技术研究项目(批准号: 12511592, 11541396)、黑龙江省政府博士后资助经费(批准号: LBH-Z11108)、黑龙江省研究生创新科研项目(批准号: YJSCX2011-199HLJ)和齐齐哈尔大学创新科研项目(批准号: YJSCX2010-017X)资助.

Preparation of Ag/ZnO-SnO2 by CTAB-assisted and Photocatalytic Degradation of Rhodamine B

LI Li, ZHUO Na, GAO Yu, ZHAO Yue-Hong, LI En-Shuai, ZHAO Li-Jie   

  1. Faculty of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, China
  • Received:2012-01-12 Online:2012-06-10 Published:2012-06-10

摘要: 在模板剂溴化十六烷基三甲基胺(CTAB)作用下, 采用溶胶-凝胶法再结合程序升温溶剂热法制备了纳米复合材料Ag/ZnO-SnO2(CTAB), 其中Ag, Zn, Sn摩尔比为0.1: 2: 1. 利用X射线衍射(XRD)、X射线光电子能谱(XPS)、透射电子显微镜(TEM)、扫描电子显微镜配合X射线能量色散谱(SEM-EDS)和N2吸附-脱附测定等方法对复合材料的组成、结构及形貌等进行了表征. 结果表明, 该复合材料具有纤锌矿和金红石结构, Ag以单质形式存在. 与未经CTAB作用的样品相比, Ag/ZnO-SnO2(CTAB)颗粒分布更均匀, 且呈现规则的纳米棒状结构. 复合材料在紫外光和可见光作用下对罗丹明B(RhB)的光催化降解结果显示, 样品Ag/ZnO-SnO2(CTAB)的光催化活性明显高于Ag/ZnO-SnO2、ZnO-SnO2、ZnO和商用P-25.

关键词: 溴化十六烷基三甲基胺, 溶胶-凝胶法, Ag/ZnO-SnO2, 光催化, 罗丹明B

Abstract: The nano-composite Ag/ZnO-SnO2 under cetyltrimethylammonium bromide(CTAB) was prepared with a molar ratio of Ag, Zn and Sn of 0.1: 2: 1 by the sol-gel method combined with temperature-programmed treatment. The phase composition, structures and morphologies of the nanocomposite Ag/ZnO-SnO2(CTAB) were characterized by X-ray diffraction(XRD), X-ray photoelectron spectroscopy(XPS), transmission electron microscopy(TEM), N2 adsorption-desorption tests and scanning electron microscopy assisted X-ray energy dispersive spectroscopy(SEM-EDS). The results show that the nanocomposite Ag/ZnO-SnO2 is well wurtzite and rutile structures, and Ag in the nano-composite Ag/ZnO-SnO2 is metallic Ag0. Compared with no CTAB-assisted nanocomposite, the nanocomposite Ag/ZnO-SnO2(CTAB) has uniformly distribution and shows regularly nano-rods. By the photocatalytic degradation of RhB, under UV and visble light irradiation, the photocatalytic activity of Ag/ZnO-SnO2 under CTAB-assisted is enhanced, of which is higher than that of Ag/ZnO-SnO2, ZnO-SnO2, ZnO and Degussa P-25.

Key words: Cetyltrimethylammonium bromide, Sol-gel method, Ag/ZnO-SnO2, Photocatalysis, Rhodamine B

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