ZrO_2纳米涂层修饰改性陶瓷微滤膜吸附机理研究  

Filtration Mechanisms of Ceramic Microfiltration Membranes Modified by Nano-crystalline ZrO_2 Coating

作　　者：陈猛[1] 吴也凡[1] 罗凌虹[1] 石纪军[1] 周健儿[1] 王家衡[2] 汪永清[1] 

机构地区：[1]景德镇陶瓷学院江西省高等学校无机膜重点实验室,景德镇333001 [2]深圳大学,深圳518060

出　　处：《人工晶体学报》2009年第S1期331-334,共4页Journal of Synthetic Crystals

基　　金：江西省教育厅青年科学基金资助(GJJ09539);江西省自然科学基金资助(2007GZC0799)

摘　　要：分别在MgCl2和NaCl稀溶液中,用AFM研究了四方相ZrO2纳米涂层的表面排斥力随作用距离的变化关系。当作用距离较远时,表现为长程排斥力,当作用距离较近时,为强烈的短程排斥力。Mg2+在ZrO2纳米涂层表面具有特征吸附,而Na+表现出惰性电解质的特征。随着MgCl2浓度的增大,渗透通量呈明显下降的趋势。随着NaCl浓度的增大,渗透通量呈稍有增大的趋势。The variation in surface repulsive force of tetragonal Nano-crystalline ZrO2 coating with operation range was investigated by atomic force microscopy(AFM) in the magnesium chloride and sodium chloride dilute solutions respectively.Long-range repulsive force was found to take action as operation range is distant,otherwise,strong short-range repulsive force operated.A characteristic adsorption was found for Mg2+ on the surface of nano-crystalline ZrO2 coating,while Na+ exhibited an inert electrolyte behavior.The water flux of ceramic microfiltration membrane decreased obviously with the increase of magnesium chloride concentrations.But the water flux increased slightly with increasing sodium chloride concentration.

关 键 词：陶瓷膜 ZrO2纳米晶 渗透通量 水簇结构 

分 类 号：TB383.2[一般工业技术—材料科学与工程]