| Morphological characterization of Al_2O_3 membrane fabricated by sol-gel dip-coating method |
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| 作者单位： | Department of Chemistry College of Sciences Shanghai University，Department of Chemistry College of Sciences Shanghai University，Department of Chemistry College of Sciences Shanghai University，Department of Chemistry College of Sciences Shanghai University，Department of Chemistry College of Sciences Shanghai University，Zhejiang Alunite Comprehensive Utilization Research Institute，Shanghai 200444 P. R. China Shanghai 200444 P. R. China Shanghai 200444 P. R. China Shanghai 200444 P. R. China Shanghai 200444 P. R. China Wenzhou 325028 P. R. China |
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| 摘 要： | 1 Introduction Alumina membrane has received considerable atten-tion for its thermal ,chemical and mechanical stabilityin filtration applications .Alumina membraneis usuallyprepared by sol-gel process ,in which uniform nano-meter-sized particles can be pr…
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Morphological characterization of Al_2O_3 membrane fabricated by sol-gel dip-coating method |
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| Authors: | XU Zhan-feng ZHANG Liang-miao CHEN Nian-yi LU Wen-cong ZHANG Zhen WU Zu-xin |
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| Institution: | XU Zhan-feng ZHANG Liang-miao CHEN Nian-yi LU Wen-cong ZHANG Zhen WU Zu-xin1. Department of Chemistry,College of Sciences,Shanghai University,Shanghai 200444,P. R. China2. Zhejiang Alunite Comprehensive Utilization Research Institute,Wenzhou 325028,P. R. China |
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| Abstract: | Alumina membranes without pinholes and cracks were prepared by the sol-gel process using ammonium aluminium sulphate as the starting material. The effects of different preparing conditions on morphology characteristics of the membrane were investigated by scanning electron microscopy and 3D rotational microscopy. The preparing conditions include the amounts of drying control chemical additives (DCCA), sintering procedure and sol-gel concentration. The results showed that PVA is a good crack-preventing reagent and the morphology of supported membranes was affected by many factors, including Al_2O_3 concentration, PVA/Al_2O_3 ratio, heating rate, membrane thickness and intrinsic defects of the substrate surface. |
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| Keywords: | supported Al_2O_3 membrane ammonium aluminium sulphate sol-gel method morphology |
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