物理化学学报 >> 2004, Vol. 20 >> Issue (06): 637-641.doi: 10.3866/PKU.WHXB20040617

研究论文 上一篇    下一篇

阳极氧化铝模板上热扩散法制备MoOx纳米阵列

王凡;张玉玲;卫庆硕;吴凯;谢有畅   

  1. 北京大学化学与分子工程学院,物理化学研究所,分子动态与稳态结构国家重点实验室,北京 100871
  • 收稿日期:2004-01-11 修回日期:2004-03-08 发布日期:2004-06-15
  • 通讯作者: 吴凯 E-mail:kaiwu@chem.pku.edu.cn

Synthesis of MoOx Nano-arrays on Anodic Aluminum Oxide Template by Thermal Diffusion

Wang Fan;Zhang Yu-Ling;Wei Qing-Shuo;Wu Kai;Xie You-Chang   

  1. State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Physical Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871
  • Received:2004-01-11 Revised:2004-03-08 Published:2004-06-15
  • Contact: Wu Kai E-mail:kaiwu@chem.pku.edu.cn

摘要: 采用简单的热扩散法, MoO3可在模板纳米孔道内有序生长, 经还原后获得MoO2和金属Mo纳米管/线阵列. 运用XRD、SEM、TEM、HRTEM等技术对产物进行了表征. 结果表明: 在70 nm孔径的阳极氧化铝模板上, H2/N2气氛下600 ℃时的还原产物为单晶MoO2; 而在50 nm的模板上, 同样条件的还原产物为MoO2微晶聚合体. 乙醇的加入能够大大改善产物的形貌. H2气氛, 650 ℃以上温度下进一步还原得到了金属Mo纳米管阵列.

关键词: 钼, 氧化钼, 阳极氧化铝, 模板, 纳米阵列, 热扩散

Abstract: MoO2 nano-arrays were simply prepared by reduction of thermally diffused MoO3 on anodic aluminum oxide(AAO) template. The structure and morphology of the nano-arrays were studied by XRD, SEM, TEM and HRTEM. The results showed that, after hydrogenation of the evaporates under 600 ℃ in H2/N2 mixture, single crystalline MoO2 nanotubes/nanowires were produced on 70 nm AAO template, while on 50 nm AAO template yielded was the piling-up of MoO2 nanocrystallites in nanotubes. Addition of ethanol into the powdered MoO3 precursors greatly improved the morphology of the nanowires. Further reduction of MoO2 at above 650 ℃ in H2 led to the production of Mo nanotube arrays.

Key words: Mo, MoOx, Anodic aluminum oxide(AAO), Template, Nano-arrays, Thermal diffusion