物理化学学报 >> 2010, Vol. 26 >> Issue (11): 3106-3112.doi: 10.3866/PKU.WHXB20101114

材料物理化学 上一篇    下一篇

阴极等离子体电解法制备氧化铝纳米颗粒

李兆虎, 张志昆, 郭等柱   

  1. 北京大学电子学系,纳米器件物理与化学教育部重点实验室,北京100871
  • 收稿日期:2010-05-24 修回日期:2010-07-22 发布日期:2010-10-29
  • 通讯作者: 郭等柱 E-mail:guodz@pku.edu.cn
  • 基金资助:

    国家自然科学基金(60971002)和国家基础研究重大项目计划(973)(2006CB932402)资助

Fabrication of Al2O3 Nanoparticles by Cathodic Plasma Electrolysis

LI Zhao-Hu, ZHANG Zhi-Kun, GUO Deng-Zhu   

  1. Key Laboratory for Physics and Chemistry of Nanodevices, Ministry of Education, Department of Electronics, Peking University, Beijing 100871, P. R. China
  • Received:2010-05-24 Revised:2010-07-22 Published:2010-10-29
  • Contact: GUO Deng-Zhu E-mail:guodz@pku.edu.cn
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (60971002) and National Key Basic Research Programof China (973) (2006CB932402).

摘要:

以金属铝为阴极材料, 以3 mol·L-1浓度的NH4NO3水溶液为电解液, 采用非对称电极阴极等离子体电解方法制备出氧化铝纳米颗粒. 采用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X 射线能量色散谱(EDX)、X 射线衍射(XRD)和X 射线光电子能谱(XPS)对颗粒的形貌和结构进行了表征.结果表明颗粒以立方相Al2O3为主.还对放电过程的电流变化和发光现象进行了研究. 结合实验结果提出了这种颗粒的生长机制.

 

关键词: 阴极等离子体电解, 氧化铝纳米颗粒, 阴极烧蚀, 溶液氧化, 显微表征

Abstract:

We used aluminum as the cathodic material and an aqueous solution of 3 mol·L-1 NH4NO3 as the electrolyte in our work. Al2O3 nanoparticles were fabricated using asymmetrical electrodes during cathodic plasma electrolysis. The morphology and structure of the particles were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray energy dispersion (EDX), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). We identified cubic Al2O3 as the main component. The changes in current and optical emission phenomena during the cathodic plasma electrolysis were also studied. Based on the experimental results, we discuss the mechanisms responsible for particle formation.

 

Key words: Cathodic plasma electrolysis, Al2O3 nanoparticle, Cathodic ablation, Solution oxidation, Microscopic characterization

MSC2000: 

  • O646.541