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光滑管壁结构与竹子结构氧化钛纳米管在一些应用方面分别表现出各自的优势,比如光滑管壁结构氧化钛纳米管更适合电子的传输,竹子结构氧化钛纳米管增加了纳米管的比表面积.集合了两种结构特点的氧化钛纳米管将会在一些应用方面更加优秀.我们提供了一种通过阳极氧化简单制备多段氧化钛纳米管阵列的方法,这种多段氧化钛纳米管是由光滑管壁结构与竹子结构交替组成的.直流电压与交流电压交替使用分别得到氧化钛纳米管的光滑管壁段和竹子结构段.直流电压与交流电压各自的持续时间可以对段长完全控制.并且我们指出了得到这种多段氧化钛纳米管阵列应该注意的问题.首先,为了避免纳米管段与段之间的分裂,电压切换时氢离子的分布不应该被扰乱;其次,为了避免纳米管各段之间因为直径出现差别而断裂,直流电压的大小应该等于交流电压的大电压.这种多段的纳米管阵列期望在太阳能电池,药物传输等方面得到广泛应用.
Smooth tube wall structure and bamboo structure Titanium oxide nanotubes have their own advantages in some applications, such as smooth tube wall structure of titanium dioxide nanotubes is more suitable for electron transport, bamboo structure of titanium dioxide nanotubes increased nanotubes specific surface area Titanium dioxide nanotubes incorporating two structural features will be superior in some applications.We provide a simple method of preparing multi-section titania nanotube arrays by anodization, which is a smooth Alternating the tube wall structure and the bamboo structure, the DC voltage and the AC voltage are alternately used to obtain smooth tube wall sections and bamboo structure sections of the titanium oxide nanotubes, respectively. The respective durations of the DC voltage and the AC voltage can be completely controlled for the section length. We pointed out the problems that should be noticed when obtaining this multi-segment titanium oxide nanotube array.Firstly, in order to avoid the splitting between the nanotube segments and the segments, the distribution of hydrogen ions should not be disturbed during voltage switching. Secondly, Due to differences in diameter and fracture, the size of the DC voltage should be equal to the large AC voltage . Nanotube array of such multistage desired widely used in solar cells, and other drug delivery.