氟碳铝板表面溶胶-凝胶法低温制备TiO_2纳米膜聚乙二醇对膜性能的影响  

Effect of Polyethylene Glycol on Microstructure and Photocatalytic Performance of Nanoscale Titanium Dioxide Film Prepared on Fluorocarbon Aluminum Plate by Low Temperature Sol-Gel Process

作　　者：艾凡荣[1] 李勇[1] 闫洪[1] 

机构地区：[1]南昌大学机电工程学院,江西南昌330031

出　　处：《材料保护》2012年第12期22-23,32,共3页Materials Protection

基　　金：国家自然科学基金(51102131;51165032);江西省教育厅科技项目(GJJ12036);江西省博士后研究人员科研项目资助

摘　　要：用传统的溶胶-凝胶法制膜,晶化热处理温度达500℃,不适合耐热性较差的基体。采用过量水体系的溶胶-凝胶法低温制备了纳米TiO2薄膜,研究了聚乙二醇(PEG)质量分数、分子量对纳米TiO2膜在氟碳铝表面成膜特性的影响。结果表明:制备的纳米TiO2膜表面较平整、均匀,表现为锐钛矿型结构,对亚甲基蓝溶液具有良好的光降解作用,但膜会产生裂纹;随着PEG质量分数和分子量的增加,纳米TiO2膜的开裂倾向减小。Nanoscale titanium dioxide(nano-TiO2) film was prepared on the surface of fluorocarbon aluminum plate by sol-gel process involving excessive water.The effect of polyethylene glycol(PEG) on the microstructure and photocatalytic performance of nano-TiO2 film was investigated.Results show that as-prepared nano-TiO2 film is smooth and uniform and consists of anatase-TiO2.Besides,as-prepared nano-TiO2 film has good photocatalyic performance for the degradation of methylene blue solution,but it contains cracks on the surface.Fortunately,increasing dosage of PEG and molecular weight of PEG both contribute to retard the formation of cracks on the surface of as-prepared nano-TiO2film.

关 键 词：纳米TIO2膜 光催化活性 过量水体系溶胶-凝胶法 低温 氟碳铝板 PEG 形貌 组构 

分 类 号：TB383.2[一般工业技术—材料科学与工程]