期刊文献+

阳极氧化ZrO_2纳米管阵列的制备及其生长机制

Preparation and growth mechanism of anodic ZrO_2 nanotube arrays
下载PDF
导出
摘要 在含NH4F的聚乙二醇(PEG-200)电解液中通过阳极氧化制备高度有序的二氧化锆纳米管阵列(ZrO2-NTs)。考察氧化电压、氧化时间以及电解液水含量对 ZrO2-NTs 形貌的影响,并讨论其生长机制,采用等效电路Rs(QfRf)(QdRc)对ZrO2-NTs的电化学阻抗谱进行拟合。结果表明,在该体系中ZrO2-NTs的形成包括氧化、水解形核以及膜溶解过程,氧化电压、氧化时间以及电解液水含量是影响ZrO2-NTs生长的重要因素,在含1.0%NH4F(质量分数)和5% H2O(体积分数)的 PEG-200电解液中,20 V 电压下氧化3 h 可制备得到管径为100~120 nm 的ZrO2-NTs。电化学阻抗谱分析结果表明,ZrO2膜层的界面电荷转移电阻较大。 Highly ordered ZrO2 nanotube arrays (ZrO2-NTs) were prepared by anodic oxidation in PEG-200 electrolyte containing NH4F. The effects of oxidation voltage, oxidation time and water content of the electrolyte on the morphology and structure of ZrO2-NTs were investigated intensively. Furthermore, the growth mechanism of ZrO2-NTs in PEG-200 electrolyte was discussed. Equivalent circuit model Rs(QfRf)(QdRc) was used to analyze the electrochemical impedance of ZrO2-NTs. The results show that the formation of ZrO2-NTs in this system experiences oxidation, hydrolysis-nucleation and oxide film dissolution processes. The oxidation voltage, oxidation time and water content in the electrolyte are important factors on the growth of ZrO2-NTs. Highly ordered ZrO2-NTs with tube diameters arranging from 100 to 120 nm can be obtained in PEG-200 containing 1.0%NH4F (mass fraction) and 5%H2O (volume fraction) at potential of 20 V for 3 h. The impedance analysis results indicate that the interface charge transfer resistance of the ZrO2 film is large.
出处 《中国有色金属学报》 EI CAS CSCD 北大核心 2014年第9期2345-2351,共7页 The Chinese Journal of Nonferrous Metals
基金 国家自然科学基金资助项目(21103150) 教育部高校博士点专项基金资助项目(20113317110002)
关键词 ZrO2纳米管阵列 聚乙二醇 阳极氧化 生长机制 ZrO2 nanotube array polyethylene glycol anodic oxidation growth mechanism
  • 相关文献

参考文献16

二级参考文献40

共引文献46

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部