Ni^(2+)掺杂对纳米TiO_2薄膜亲水性的影响  

Effect of Doped Ni^(2+) on Hydrophilicity of TiO_2 Thin Film

作　　者：李婷[1] 尹荔松[1] 陈敏涛[1] 高松华[1] 潘吉浪[1] 陈永平[1] 谭敏[1] 

机构地区：[1]中南大学物理科学与技术学院,湖南长沙410083

出　　处：《材料开发与应用》2007年第2期24-28,共5页Development and Application of Materials

基　　金：中国博士后基金资助项目(20060390878)

摘　　要：用溶胶-凝胶法在玻璃上制备了锐钛矿型TiO2和过渡金属镍掺杂TiO2薄膜。采用XRD、原子力显微镜和表面接触角仪等手段对TiO2薄膜进行了表征。结果表明,少量的镍离子掺杂在一定程度上抑制了TiO2晶粒的生长,提高了薄膜的表面能态,从而改善TiO2薄膜亲水性能和光致亲水性能。镍掺杂摩尔分数2.0%、500℃热处理2 h后,较未掺杂薄膜的亲水性能大幅提高,掺杂镍的薄膜在黑暗中放置一周后仍能表现出超亲水性。A series of Ni^2＋ doped TiO2 thin films were prepared by sol-gel method. The effect of doped-Ni content on the hydrophilie properties of the film was studied by means of XRD,AFM and surface contact angle method. The results show that with doped Ni^2＋ ,crystal growing of the TiO2 was inhibited, the surface energy was increased and the photo-induced super-hydrophilieity was improved. The 2.0% mol Ni-doped TiO2 thin film retained super-hydrophilicity even after being placed in darkness for a week.

关 键 词：溶胶凝胶法 二氧化钛薄膜 镍离子掺杂 超亲水性 

分 类 号：TQ57[化学工程—精细化工]