【摘要】 采用电化学阳极氧化法在纯钛片表面制备了高度有序的TiO2纳米管阵列。利用SEM、XRD分别对TiO2纳米管阵列的形貌、晶型进行了表征,并通过线性扫描伏安法对N719染料敏化纳米管阵列电极的光电性能进行了研究。实验结果表明,纳米管阵列的管径和长度随着阳极氧化电压的升高和氧化时间的延长都分别相应增加。同时还发现,通过450℃热处理的TiO2纳米管阵列,具有较好的锐钛矿晶型结构,其光电转化效率为2.1%。更多还原

【Abstract】 Highly ordered TiO2 nanotube arrays were fabricated via electrochemical anodization of pure titanium foil.The morphology,crystal structure of the TiO2 samples were characterized by SEM,XRD.The photovoltaic performances of TiO2 nanotube arrays were sensitized with ruthenium-based dye N719 were evaluated by means of the linear sweep voltammetry measurement.The results showed that the pore-size and length of TiO2 nanotube arrays increased with the increases of anodization voltage and time.At the same time,the samples calcined at 450℃ have a perfect anatase phase crystal structure and showed the highest light conversion efficiency was 2.1%.更多还原