不同制备条件对二氧化钛纳米管阵列及其结构的影响

不同制备条件对二氧化钛纳米管阵列及其结构的影响

高乾;王树林;蹇敦亮;王海锋

【期刊名称】《功能材料》 【年(卷),期】2011(042)003

【摘要】We fabricated highly ordered arrays of TiO2 namo tuhes(NT) by anodizing Ti foil in ethylene glycol and NHrF eleclrolyte. The same time, we studied the effects by changing anodization parameters including the content in electrolyte, voltage and reaction time. Using scanning electron microscopy(SEM) and X-ray diffraction (XRD) we analyzed the nanostructure and morphology of the TiO2 nano-tubes. And we discussed the mechanism of the NT array formation in reference with the current-time curve. The results showed that TiO2 nanotubes diameters and morphologies changed by altering of varying anodization parameters. The crystal type can change after the TiO2 nano-tubes were annealed at different temperatures.%采用阳极氧化法以NH4F/乙二醇为电解液制备高度有序的TiO2纳米管,研究了不同电解液浓度、电解电压、电解时间等参数对TiO2纳米管的影响.在不同温度下对TiO2纳米管进行退火处理.分别利用转靶X射线衍射仪(XRD)和场发射扫描电子显微镜(SEM)对TiO2纳米管阵列的物相结构和形貌变化进行表征.结合氧化过程电流密度变化探讨了TiO2纳米管的生长机理.结果表明,不同的阳极氧化参数对TiO2纳米管的形貌有着一定的影响,不同退火温度可以使TiO2纳米管的晶相结构发生转变.