Crystalline Te nanotube and Te nanorods-on-CdTe nanotube arrays on ITO via a ZnO nanorod templating-reaction
Crystalline Te nanotube and Te nanorods-on-CdTe nanotube arrays on ITO via a ZnO nanorod templating-reaction
复制标题
通过 ZnO 纳米棒模板反应在 ITO 上制备晶体 Te 纳米管和 CdTe 纳米管上的 Te 纳米棒阵列
DOI：
10.1039/c1ce00010a
复制
发表时间：
2011-04-01
期刊：
影响因子：
3.1
通讯作者：
Li, Quan
中科院分区：
文献类型：
--
作者：
Wang, Xina;Xu, Yeming;Li, Quan
通过 ZnO 纳米棒模板反应方法，在氧化铟锡 (ITO) 基板上展示了垂直排列的 Te 纳米管和由 Te 纳米棒分支的 CdTe 纳米管阵列。通过简单地改变ZnO-CdTe核壳纳米电缆的蚀刻剂类型和蚀刻温度，可以选择性地蚀刻掉ZnO核，并且可以很好地控制从CdTe到Te的化学反应，形成纯CdTe或Te纳米管，或CdTe纳米管上的Te纳米棒纳米复合阵列。结晶良好的Te纳米管和Te纳米棒均为六方相，前者的壁厚、直径和长度分别为～60 nm、～150 nm和～8 μm，后者的直径和长度分别为～17 nm和～80 nm。对 ZnO-CdTe 纳米电缆到 Te 相关纳米结构的结构和形态演化进行了动态研究。讨论了 CdTe 纳米管阵列上的 Te 纳米棒以及纯 Te 和/或 CdTe 纳米管阵列的形成机制。
Vertically aligned Te nanotube and CdTe nanotube arrays branched with Te nanorods were demonstrated on an indium tin oxide (ITO) substrate via a ZnO nanorods templating-reaction method. By simply changing the etchant type and etching temperature of the ZnO–CdTe core–shell nanocables, the ZnO cores can be selectively etched off and the chemical reaction from CdTe to Te can be well controlled to form pure CdTe or Te nanotubes, or Te nanorods-on-CdTe nanotube nanocomposite arrays. Both the well-crystallized Te nanotubes and the Te nanorods are of hexagonal phase, of which the former have respective wall thickness, diameter and length of ∼60 nm, ∼150 nm and ∼8 μm, and the latter have diameter and length of ∼17 nm and ∼80 nm. Dynamic studies on the structural and morphological evolution from ZnO–CdTe nanocables to the Te-related nanostructures were performed. The formation mechanism of the Te nanorods-on-CdTe nanotube arrays and pure Te and/or CdTe nanotube arrays are discussed.