液相法合成分等级CuO纳米片  

Liquid-phase Synthesis of CuO Hierarchical Nanosheets

作　　者：刘新建[1] 孙广[2] 郑立坤[1] 赵宏霞[1] 

机构地区：[1]信阳师范学院物理电子工程学院,河南信阳464000 [2]河南质量工程职业学院基础部,河南平顶山467000

出　　处：《信阳师范学院学报（自然科学版）》2008年第1期118-121,共4页Journal of Xinyang Normal University(Natural Science Edition)

基　　金：国家自然科学基金项目(20207002)

摘　　要：在溶液的pH值接近中性(7.5)、环境温度接近室温(30℃)的条件下,利用液相法合成了分等级CuO纳米片.用扫描电子显微镜(SEM)和X射线衍射(XRD)对CuO纳米片进行了表征,结果显示:合成的CuO纳米片由无数小纳米级粒子组成.合成过程中,间断地用SEM进行检测,研究了CuO纳米片的形成机制.利用UV-vis光谱分析法估计纳米片的能带隙,结果显示:计算的带隙为1.94 eV.这种结构对于气体传感器、锂离子电极材料、场发射装置以及太阳能电池的制造等具有重要意义.Hierarchical CuO nanosheets were successfully synthesized by liquid phase synthesis method with the pH near neutral （7.5） and temperature close to room temperature （ 30 ℃ ）. SEM and TEM resutls showed that the as-synthesized CuO nanosheets were composed of numerous tiny nanoparticles. The growth mechanism of CuO nanosheets can be explained by SEM detection in synthesis. The spectral Analysis of UV-vis was used to estimate the band gap of the nanosheets, and the band gap was calcutaled to be about 1.94 eV. This structure is important for the fabrication of gas sensors, lithium ion electrode materials ,field-emission devices and solar cells.

关 键 词：CuO纳米片 纳米结构 半导体 化学合成 

分 类 号：TB383[一般工业技术—材料科学与工程]