高等学校化学学报

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闪锌矿结构CdS纳米晶的制备

许荣辉1,2, 汪勇先1, 贾广强3, 徐万帮1,2, 尹端沚1   

    1. 中国科学院上海应用物理研究所放射性药物中心, 上海 201800;
    2. 中国科学院研究生院, 北京100049;
    3. 上海大学仪器分析与研究中心, 上海 200444
  • 收稿日期:2006-04-28 修回日期:1900-01-01 出版日期:2007-02-10 发布日期:2007-02-10
  • 通讯作者: 汪勇先

Synthesis of Zinc Blende CdS Nanocrystallites Using 3-Mercaptopropionic Acid as Precursor by Hydrothermal Method

XU Rong-Hui1,2, WANG Yong-Xian1, JIA Guang-Qiang3, XU Wan-Bang1,2, YIN Duan-Zhi1

  

    1. Radiopharmaceutical Centre of Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;
    2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China;
    3. Instrumental Analysis and Research Centre of Shanghai University, Shanghai 200444, China
  • Received:2006-04-28 Revised:1900-01-01 Online:2007-02-10 Published:2007-02-10
  • Contact: WANG Yong-Xian

摘要: 以3-巯基丙酸为硫源, 采用水热法制备了尺寸小于10 nm、具有强光致荧光的闪锌矿型立方CdS半导体纳米晶. 用EDS能谱、透射电镜(TEM)、高分辨透射电镜(HRTEM)和XRD对晶体的化学成分、大小及结构进行了表征, 并分析了影响纳米晶尺寸的因素, 研究了闪锌矿型硫化镉纳米晶的荧光激发与发射谱.

关键词: 硫化镉(CdS), 纳米晶, 闪锌矿结构, 水热合成法, 光致荧光

Abstract: Zinc blende CdS nanocrystals with a size about 5 nm were synthesized using 3-mercaptopropionic acid and cadmium acetate as precursor directly via hydrothermal synthesis method. Narrow size-distribution nanocrystals were produced by controlling some main affecting factors. The nanocrystals emit highly symmetric fluorescence. X-ray diffraction, transmission electron microscopy, high resolution electron microscopy, and fluorescence excitation and emission spectroscopy were used to characterize the chemical composition, size, shape, structure and photophysical property of the product. The zinc blende CdS might be of potential value in bio-imaging area.

Key words: Cadmium sulphide, Nanocrystallite, Zinc blende, Hydrothermal method, Photoluminescence

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