| Ti/Zr复合纳滤膜的制备及其性能 |
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| 引用本文： | 朱瓌之,郭红林,姜迁,漆虹. Ti/Zr复合纳滤膜的制备及其性能[J]. 化工学报, 2015, 66(4): 1600-1606. DOI: 10.11949/j.issn.0438-1157.20141645 |
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| 作者姓名： | 朱瓌之 郭红林 姜迁 漆虹 |
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| 作者单位： | 南京工业大学膜科学技术研究所, 材料化学工程国家重点实验室, 江苏 南京 210009 |
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| 基金项目： | 国家自然科学基金项目(21276123);国家高技术研究发展计划项目(2012AA03A606);江苏省“六大人才高峰”项目;江苏高校优势学科建设工程项目~~ |
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| 摘 要： | 通过聚合溶胶路线制备出稳定的Ti/Zr(摩尔比=1:1)复合溶胶。采用浸浆法,在平均孔径为5～6 nm的片状a-Al2O3/g-Al2O3载体上制备出完整无缺陷的Ti/Zr复合纳滤膜。详细考察了焙烧温度对Ti/Zr粉体的影响,并考察了Ti/Zr复合纳滤膜的性能。结果表明:在较高烧成温度下(500℃),Ti/Zr粉体依然呈无定形态且保持微孔结构。在400℃烧成温度下制备出孔径为1.49 nm的Ti/Zr复合纳滤膜,该膜的截留分子量(MWCO)为880,纯水通量为4.3 L·m-2·h-1·MPa-1。在pH=6,压力0.8 MPa的条件下,该膜对0.005 mol·L-1的MgCl2、CaCl2的截留率分别为85%和78%。
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| 关 键 词： | 陶瓷纳滤膜 Ti/Zr复合 离子截留 溶胶-凝胶法 |
| 收稿时间： | 2014-11-03 |
| 修稿时间： | 2015-01-13 |
Fabrication and properties of Ti/Zr composite nanofiltration membrane |
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| ZHU Guizhi;GUO Honglin;JIANG Qian;QI Hong. Fabrication and properties of Ti/Zr composite nanofiltration membrane[J]. Journal of Chemical Industry and Engineering(China), 2015, 66(4): 1600-1606. DOI: 10.11949/j.issn.0438-1157.20141645 |
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| Authors: | ZHU Guizhi GUO Honglin JIANG Qian QI Hong |
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| Affiliation: | Membrane Science and Technology Research Center, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, Jiangsu, China |
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| Abstract: | A stable Ti/Zr composite polymeric sol with Ti:Zr molar ratio of 1:1 was synthesized through the polymeric sol route. Disk a-Al2O3 supported mesoporous g-Al2O3 membrane with an average pore size of 5-6 nm was used as support for nanofiltration membranes deposition. A defect-free Ti/Zr composite nanofiltration membrane superimposed on the support was fabricated via the dip-coating method followed by drying and calcination. The influence of calcination temperature on Ti/Zr powders was studied. The properties of Ti/Zr composite nanofiltration membrane were also investigated. Ti/Zr powders maintained amorphous state and microporous structure up to a calcination temperature of 500℃. The MWCO, mean pore size and pure water flux of Ti/Zr composite nanofiltration membrane calcined at 400℃ were 880, 1.49 nm and 4.3 L·m-2·h-1·MPa-1, respectively. Under the condition of pH=6 and transmembrane pressure 0.8 MPa, the retention properties of Ti/Zr composite membrane towards 0.005 mol·L-1 MgCl2 and CaCl2 solutions were 85% and 78%, respectively. |
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| Keywords: | ceramic nanofiltration membranes Ti/Zr composite ions retention sol-gel method |
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