Morphological characterization of Al_2O_3 membrane fabricated by sol-gel dip-coating method  

作　　者：徐占锋 张良苗 陈念贻 陆文聪 张振 吴祖燊 

机构地区：[1]Department of Chemistry, College of Sciences, Shanghai University [2]Zhejiang Alunite Comprehensive Utilization Research Institute

出　　处：《Journal of Shanghai University(English Edition)》2006年第6期553-557,共5页上海大学学报（英文版）

基　　金：Project supported by National Natural Science Foundation ofChina (Grant No .20373040) ;Science Foundation of Science andTechnology Commission of Zhejiang Province ( Grant No .0252nm101) ;Science Foundation of Shanghai MunicipalCommission of Science and Technology (Grant No .0452nm019)

摘　　要：Alumina membranes without pinholes and cracks were prepared by the sol-gel process using anunordum 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 ninny factors, including Al2O3 concentration, PVA/Al2O3 ratio, heating rate, membrane thickness and intrinsic defects of the substrate surface.Alumina membranes without pinholes and cracks were prepared by the sol-gel process using anunordum 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 ninny factors, including Al2O3 concentration, PVA/Al2O3 ratio, heating rate, membrane thickness and intrinsic defects of the substrate surface.

关 键 词：supported Al2O3 membrane ammonium aluminium sulphate sol-gel method morphology. 

分 类 号：O614.31[理学—无机化学]