| TiO2纳滤膜的制备及其离子截留性能 |
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| 引用本文： | 漆虹,李世大,江晓骆,韩静.TiO2纳滤膜的制备及其离子截留性能[J].无机材料学报,2011(3):305-310. |
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| 作者姓名： | 漆虹 李世大 江晓骆 韩静 |
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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; |
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| 基金项目： | 国家自然科学基金青年基金(20906047); 化学工程联合国家重点实验室开放基金(SKL-ChE-09A01)~~ |
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| 摘 要： | 以钛酸四异丙酯为前驱体,通过聚合溶胶路线制备出平均尺寸约1.2 nm的TiO2溶胶.采用浸浆法,经过一次涂膜,在平均孔径约为3nm的片状γ-Al2O3/α-Al2O3支撑体上制备出完整无缺陷的TiO2纳滤膜.详细考察了煅烧温度对非担载膜(TiO2粉末)和TiO2纳滤膜性能的影响.在350℃的煅烧温度下制备出孔径约为1.5nm的TiO2纳滤膜,该膜对PEG的截留分子量为890,纯水渗透通量为5.3 L/(m2 h)(8×105Pa,20℃);并详细考察了该膜对NaCl、CaCl2、Na2SO4、MgCl2和Ni(NO3)25种溶液的截留性能.结果表明,在pH=4,压力5×105Pa的条件下,Ti-350膜对0.025 mol/L CaCl2和MgCl2溶液的离子截留率分别达到96.5%和92.8%.
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| 关 键 词： | 陶瓷纳滤膜 TiO2 溶胶-凝胶法 离子截留 |
Preparation and Ions Retention Properties of TiO_2 Nanofiltration Membranes |
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| QI Hong,LI Shi-Da,JIANG Xiao-Luo,HAN Jing.Preparation and Ions Retention Properties of TiO_2 Nanofiltration Membranes[J].Journal of Inorganic Materials,2011(3):305-310. |
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| Authors: | QI Hong LI Shi-Da JIANG Xiao-Luo HAN Jing |
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| Affiliation: | QI Hong,LI Shi-Da,JIANG Xiao-Luo,HAN Jing(Membrane Science and Technology Research Center,State Key Laboratory of Materials-Oriented Chemical Engineering,Nanjing University of Technology,Nanjing 210009,China) |
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| Abstract: | A stable TiO2 Sol with a mean particle size of 1.2 nm was synthesized with titanium isopropoxide as a precursor through polymeric Sol-Gel route.Disk-Al2O3 supported mesoporous-Al2O3 membrane with mean pore size of 3 nm was used as support for nanofiltration membranes deposition.Defect-free TiO2 nanofiltration membranes superimposed on these supports were fabricated via dip-coating method followed by drying and calcination.The effect of calcination temperature on properties of unsupported TiO2 membranes(powd... |
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| Keywords: | ceramic nanofiltration membranes titania Sol-Gel method ions retention |
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