作　　者： ; ; ; ;

机构地区： 华南理工大学化学与化工学院广东省绿色化学产品技术重点实验室

出　　处： 《化工新型材料》 2010年第5期63-65,102,共4页

摘　　要： 以钛酸四丁酯为钛前体,聚乙二醇(PEG)为成孔剂,采用溶胶-凝胶法制备多孔TiO2薄膜。结果表明,该薄膜具有多孔表面特征,表面粗糙不平,在避光的条件下与水接触角小于5°。当煅烧温度为450℃以及煅烧时间为2h时,得到的样品超亲水性能为最佳。同时,还探讨了薄膜超亲水性能的形成机理,薄膜的超亲水特性是由光催化物质以及粗糙表面共同作用的,并且表观接触角是服从Cassie-Baxter模型。 Porous TiO2 film was prepared on glass substrate with polyethylene glycol（PEG） as a pore generating agent by sol-gel process combining with spin-coating technology.The PEG-dopped TiO2 film with rough surface exhibited superhydrophilic characteristic although it is not exposed to ultraviolet irradiation.The results showed that porous surface prepared from tetrabutyl titanate with PEG sintered at 450℃ for 2 h was in anatase form and had maximum average roughness and superhydrophilicity.The surface morphologies and hydrophilicity of as-prepared films were greatly determined by the photeinduced material（TiO2） and porous surface.Finally,the formation mechanism and the property-structure relationship were discussed in details.

关 键 词： 薄膜 聚乙二醇 超亲水 粗糙

领　　域： [化学工程]