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2006 , Vol. 21 >Issue 3: 725 - 730

DOI: https://doi.org/10.3724/SP.J.1077.2006.00725

研究论文

纳米 TiO2涂层对 Al2O3微滤膜的改性研究

  • 周健儿 ,
  • 吴建青 ,
  • 汪永清 ,
  • 梁健 ,
  • 张小珍 ,
  • 操瑞北
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  • 1. 华南理工大学, 广州 510641;
    2. 景德镇陶瓷学院, 景德镇 333001

收稿日期: 2005-06-30

  修回日期: 2005-09-05

  网络出版日期: 2006-05-20

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Modification of Al2O3 Microfiltration Membrane by Nano-crystalline TiO2 Coating

  • ZHOU Jian-Er ,
  • WU Jian-Qing ,
  • WANG Yong-Qing ,
  • LIANG Jian ,
  • ZHANG Xiao-Zhen ,
  • CAO Rui-Bei
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  • 1. South China University of Technology, Guangzhou 510641, China;
    2. Jingdezhen Ceramic Institute, Jingdezhen 333001, China

Received date: 2005-06-30

  Revised date: 2005-09-05

  Online published: 2006-05-20

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摘要

以硫酸钛、尿素为主要原料, 采用均相沉淀法对α-Al2O3微滤复合膜进行了纳米TiO2的涂覆改性, 着重考察了反应温度、反应物浓度与涂覆次数对改性作用的影响. 实验结果表明, 制备的TiO2改性涂层光滑致密, 晶粒尺寸为10～15nm, 使改性后的Al2O3微滤复合膜水通量提高了19%以上. 用TEM、Zeta电位分析手段对改性涂层进行了测试分析, 探讨了改性的机理.

关键词： 均相沉淀法; 微滤膜; 氧化钛; 改性涂层

本文引用格式

周健儿 , 吴建青 , 汪永清 , 梁健 , 张小珍 , 操瑞北 . 纳米 TiO2涂层对 Al2O3微滤膜的改性研究[J]. 无机材料学报, 2006 , 21(3) : 725 -730 . DOI: 10.3724/SP.J.1077.2006.00725

Abstract

For the modification of α-Al2O3 microfiltration membrane, the nano-crystalline TiO2 coating was obtained by a homogeneous precipitation method using titanium sulfate and urea as raw materials. The effects of reaction temperature, reactant concentration and coating times on the modification of the membrane were investigated systematically. The micro-structure of nano-crystalline TiO2 coating and its modifying mechanism were also studied by means of TEM, Zeta electric potential analyzer etc. The results show that nano-crystalline TiO2 modifying coating composed of 10～15nm grains is smooth and dense, and the water flux of the modified membrane is increased by more than 19% over the membrane before modification.

Key words： homogeneous precipitation method; microfiltration membrane; titanium oxide; modifying coating

参考文献

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