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一维CdS纳米材料的制备与表征

发表时间:2012-04-15  浏览量:1197  下载量:505
全部作者: 吴志培,张彦彬,李旦,符秀丽
作者单位: 北京邮电大学理学院
摘 要: 通过化学气相沉积法合成出多种一维CdS纳米结构如CdS纳米带、具有不同表面粗糙度的CdS纳米线及由CdS颗粒完全包覆的CdS纳米线。通过研究沉积温度及载气流量对制备纳米材料的影响,实现对一维纳米结构的可控合成。进而利用扫描式电子显微镜(scanning electron microscope, SEM)、透射电子显微镜(transmission electron microscopy, TEM)、X射线衍射(X-ray diffraction, XRD)等一系列表征手段对所合成的CdS纳米线进行进一步观测和分析。通过结合实验方法和控制条件,对不同CdS纳米线的微光结构进行对比分析,从而深入研究这些纳米结构的生长机制,纳米线的生长遵循传统的气-液-固(vapor-liquid-solid, VLS)生长机制,而纳米带则是VLS与气-固(vapor-solid, VS)生长机制综合作用的结果。
关 键 词: 无机合成化学;化学气相沉积;CdS纳米结构;纳米线
Title: Synthesis and characterization of one-dimensional CdS nanostructure
Author: WU Zhipei, ZHANG Yanbin, LI Dan, FU Xiuli
Organization: School of Science, Beijing University of Posts and Telecommunications
Abstract: Chemical vapor deposition method was developed to fabricate various one-dimensional (1D) CdS nanostructures including CdS nanoribbons, CdS nanowires with different rough surface and CdS nanowires wreathed with irregular CdS particles. The controllable synthesis of the 1D nanostructures was realized by determining the deposition temperature and the flow of carrier gas. And then by use of scanning electron microscope (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and other characterization methods, the synthesized CdS nanowires were further observed and analyzed. Through the experimental method and control requirements, the different CdS nanowires light structure was compared and analyzed .Growth mechanism of the nanostructure was investigated in detail. The 1D CdS nanowires follow a typical vapor-liquid-solid (VLS) growth mechanism and the growth of CdS nanoribbons contains the VLS and vapor-solid (VS) mechanism.
Key words: inorganic synthetic chemistry; chemical vapor deposition; CdS nanostructures; nanowire
发表期数: 2012年4月第7期
引用格式: 吴志培,张彦彬,李旦,等. 一维CdS纳米材料的制备与表征[J]. 中国科技论文在线精品论文,2012,5(7):636-641.
 
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