利用纳米多孔氧化铝模板电化学制备钛酸锶纳米线。

Electrochemical fabrication of SrTiO3 nanowires with nanoporous alumina template.

作者信息

Kang Jinwook, Ryu Jaemin, Ko Eunseong, Tak Yongsug

机构信息

Department of Chemical Engineering, Inha University, Inchon 402-751, Korea.

出版信息

J Nanosci Nanotechnol. 2007 Nov;7(11):4194-7. doi: 10.1166/jnn.2007.111.

DOI:10.1166/jnn.2007.111

PMID:18047149

Abstract

Strontium titanate nanowires were electrochemically synthesized with nanoporous alumina template. Both chemical and electrical variables such as electrolyte pH, temperature, and current waveform were modulated to investigate the synthesis process of SrTiO3 nanowires. Superimposed cathodic pulse and diffusion time accelerated the growth of SrTiO3 nanowires, which suggested that the concentration of H+ and Sr2+ ion inside alumina template had a strong influence on the formation of SrTiO3 nanowires. Morphology and crystallinity of SrTiO3 nanowires were investigated with scanning electron microscope, X-ray diffractometer and energy dispersive X-ray spectroscopy.

摘要

钛酸锶纳米线通过纳米多孔氧化铝模板进行电化学合成。对诸如电解质pH值、温度和电流波形等化学和电学变量进行调节，以研究SrTiO₃纳米线的合成过程。叠加的阴极脉冲和扩散时间加速了SrTiO₃纳米线的生长，这表明氧化铝模板内部H⁺和Sr²⁺离子的浓度对SrTiO₃纳米线的形成有很大影响。利用扫描电子显微镜、X射线衍射仪和能量色散X射线光谱仪对SrTiO₃纳米线的形态和结晶度进行了研究。