TiO_2纳米管的光催化性及亲水性的研究

Research on the Photocatalytic Activity and Hydrophilicity of TiO_2 Nanotubes

采用阳极氧化法在纯钛表面制备TiO2纳米管,并通过扫描电子显微镜(SEM)对其表面形貌进行了表征.通过检测被降解的亚甲基蓝溶液的吸光度来表征TiO2纳米管的光催化活性.利用OCA30视频接触角测量仪测量蒸馏水在TiO2纳米管上的接触角,以纯钛为对比来探讨TiO2纳米管的亲水性.结果表明,阳极氧化法成功在纯钛表面制备出排列紧密的TiO2纳米管层,TiO2纳米管具有良好的光催化性能和亲水性能,可使钛材表面具有防污、易洗、易干的自洁功能.

Anodic oxidation was adopted to prepare TiO2 nanotube layers on pure titanium and analysed the surface mor-phology of TiO2 nanotube layers using the scanning electronic microscope（SEM）.The photocatalytic activity of nanotubes was characterized by the absorbance of methylene blue solution of degradation.Compared to pure titanium,the hydrop-hilicity of TiO2 nanotube layers was characterized by measuring the contact angle of distilled water on the TiO2 nanotube layers.The results showed that high-aspect ratio titania nanotube arrays was successfully prepared on the surface of pure titanium by anodic oxidation.TiO2 nanotubes with good photocatalytic properties and hydrophilicity,made the surfaces of titanium have the self-cleaning function that can prevent pollution,washable,easy dry.