One-Step Fabrication of Ni/TiO2 Core/Shell Nanorod Arrays in Anodic Aluminum Oxide Membranes
One-Step Fabrication of Ni/TiO2 Core/Shell Nanorod Arrays in Anodic Aluminum Oxide Membranes
复制标题
阳极氧化铝膜中 Ni/TiO2 核/壳纳米棒阵列的一步制备
DOI：
10.1021/jp810699n
复制
发表时间：
2009-03
影响因子：
3.7
通讯作者：
Wang, GZ
中科院分区：
文献类型：
--
作者：
Zhu, W;Shen, XS;Hong, X;Wang, GZ
采用一步电沉积技术制备了Ni/TiO 2核/壳纳米棒阵列。同时合成了TiO 2壳和Ni核。此外，这种方法使得Ni核直接与Ni衬底连接而没有阻挡层，这将有利于电子从Ni核到衬底的传输。通过改变TiF 4的浓度，可以在20 ~ 90 nm范围内调节TiO 2壳层的厚度;通过改变沉积电位或沉积时间，可以在2 ~ 60 μm范围内调节Ni/TiO 2核/壳纳米棒的长度。用扫描电镜和透射电镜对Ni/TiO 2核/壳纳米棒进行了表征。能量色散谱和选区电子衍射用于确定Ni/TiO 2核/壳纳米棒的化学组成和晶体结构。本方法可用于合成可变金属/TiO 2核/壳纳米结构。
Synthesis of Ni/TiO2 core/shell nanorod arrays is carried out using a one-step electrodeposition technique. The TiO2 shell and Ni core are synthesized at the same time. Furthermore, this approach makes the Ni core directly connect with the Ni substrate without a barrier layer, which would benefit electron transport from the Ni core to the substrate. The TiO2 shell thickness can be tuned from about 20 to 90 nm by changing the concentration of TiF4, and the length of the Ni/TiO2 core/shell nanorods can be tuned from about 2 to 60 μm by changing the deposition potential or time. The Ni/TiO2 core/shell nanorods are characterized by scanning electron microscopy and transmission electron microscopy. Energy dispersive spectroscopy and selected area electron diffraction are used to determine the chemical composition and crystal structure of the Ni/TiO2 core/shell nanorods. The present approach can be used for synthesizing variable metal/TiO2 core/shell nanostructure.