改进的颗粒溶胶工艺制备高性能ZrO2-TiO2复合纳滤膜

doi:10.11949/j.issn.0438-1157.20150936

化工学报 ›› 2015, Vol. 66 ›› Issue (9): 3769-3775.DOI: 10.11949/j.issn.0438-1157.20150936

• 材料化学工程与纳米技术 • 上一篇下一篇

改进的颗粒溶胶工艺制备高性能ZrO₂-TiO₂复合纳滤膜

陆亚伟, 陈献富, 闻娟娟, 邱鸣慧, 范益群

南京工业大学化工学院, 材料化学工程国家重点实验室, 国家特种分离膜工程技术研究中心, 江苏南京 210009

收稿日期:2015-06-16 修回日期:2015-06-23 出版日期:2015-09-05 发布日期:2015-09-05
通讯作者: 范益群
基金资助:
国家高技术研究发展计划项目(2012AA03A606);江苏高校优势学科建设工程;江苏省“六大人才高峰”项目。

Fabrication of high performance ZrO₂-TiO₂ NF membranes via a modified colloidal sol-gel process

LU Yawei, CHEN Xianfu, WEN Juanjuan, QIU Minghui, FAN Yiqun

College of Chemical Engineering, State Key Laboratory of Materials-oriented Chemical Engineering, National Engineering Research Center for Special Separation Membranes, Nanjing Tech University, Nanjing 210009, Jiangsu, China

Received:2015-06-16 Revised:2015-06-23 Online:2015-09-05 Published:2015-09-05
Supported by:
supported by the National High Technology Research and Development Program of China (2012AA03A606), the Project of Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), the "Peak Specialists in Six Industries" High-level Specialist Fund of Jiangsu Province (2012JNHB016).

摘要/Abstract

摘要：

以水为溶剂,采用改进的颗粒溶胶工艺,通过溶胶制备参数的调控优化,制备得到平均粒径为3 nm的ZrO₂-TiO₂复合颗粒溶胶。采用浸浆法,在平均孔径为5 nm的管式α-Al₂O₃底膜上,经过一次涂膜制备得到完整无缺陷的ZrO₂-TiO₂复合纳滤膜。ZrO₂-TiO₂复合纳滤膜的平均膜厚约为200 nm,纯水渗透率约为23 L·m^-2·h^-1·(0.1 MPa)^-1,对PEG的截留分子量为600。在pH 3,压力0.9 MPa的条件下,该膜对低浓度的Co²⁺、Sr²⁺、Cs⁺的截留率分别达到99.6 %、99.2 %和75.5 %。

关键词: 陶瓷纳滤膜, 颗粒溶胶, ZrO₂-TiO₂, 离子截留

Abstract:

The optimized ZrO₂-TiO₂ composite colloidal sols with an average particle size of 3 nm were successfully synthesized via a modified colloidal sol-gel process by using water as solvent. Tubular α-Al₂O₃ membranes with a mean pore size of 5 nm were used as the intermediate layers. Defect-free ZrO₂-TiO₂ NF membranes were then fabricated on the interlayer surface via a dip-coating method. The ZrO₂-TiO₂ NF membranes with an average toplayer thickness of 200 nm showed the relatively high pure water permeability of about 23 L·m^-2·h^-1·(0.1 MPa)^-1 and low MWCO of about 600. Meanwhile, the ZrO₂-TiO₂ NF membranes indicated the high retention rates for Co²⁺, Sr²⁺ and Cs⁺ of 99.6%, 99.2% and 75.5% at the condition of low salts concentration, pH 3 and the transmembrane pressure of 0.9 MPa, respectively.

Key words: ceramic NF membranes, colloidal sols, ZrO₂-TiO₂, ions rejection

中图分类号:

TQ028.5

陆亚伟, 陈献富, 闻娟娟, 邱鸣慧, 范益群. 改进的颗粒溶胶工艺制备高性能ZrO₂-TiO₂复合纳滤膜[J]. 化工学报, 2015, 66(9): 3769-3775.

LU Yawei, CHEN Xianfu, WEN Juanjuan, QIU Minghui, FAN Yiqun. Fabrication of high performance ZrO₂-TiO₂ NF membranes via a modified colloidal sol-gel process[J]. CIESC Journal, 2015, 66(9): 3769-3775.

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改进的颗粒溶胶工艺制备高性能ZrO₂-TiO₂复合纳滤膜

Fabrication of high performance ZrO₂-TiO₂ NF membranes via a modified colloidal sol-gel process

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