无机材料学报

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聚乙烯吡咯烷酮硫脲修饰CdS纳米粒子的制备

姚建曦; 赵高凌; 韩高荣   

  1. 硅材料国家重点实验室浙江大学材料系 杭州 310027
  • 收稿日期:2002-02-28 修回日期:2002-05-27 出版日期:2003-03-20 网络出版日期:2003-03-20

Synthesis and Characterization of CdS Nanoparticles Modified with Organic

YAO Jian-Xi; ZHAO Gao-Ling; HAN Gao-Rong   

  1. State Key Laboratory of Silcon Materials and Department of Materials Science and Engineering; Zhejiang University; Hangzhou 310027; China
  • Received:2002-02-28 Revised:2002-05-27 Published:2003-03-20 Online:2003-03-20

摘要: 用硫脲为表面修饰剂,并用PVP(聚乙烯吡咯烷酮)为稳定剂在乙醇水溶液中合成了粒径分布均匀、性能稳定、有机物修饰的CdS纳米颗粒.重点分析了硫脲的引入对CdS纳米粒子晶体结构、粒径分布、紫外可见吸收光谱、红外光谱、光致荧光光谱(PL)的影响.发现硫脲修饰使得CdS纳米粒子的粒径更小,粒径分布更加均匀,并且有效地抑止了PVP对CdS荧光淬灭,在PL光谱上观察到了CdS的带隙发光.

关键词: CdS纳米粒子, 表面修饰, 硫脲, 聚乙烯吡咯烷酮

Abstract: Surface-modified CdS nanoparticles were synthesized by using thiourea. PVP (poly N-vinyl-2-pyrrolidone) was used as the stabilizer. The structure and characterization of the nanoparticles were characterized by means of TEM, XRD, UV-absorption, FT-IR, and PL spectroscopies. The results demonstrate that the surface-modified CdS nanoparticles have excellent properties in the size distribution and optic qualities.

Key words: CdS nanoparticles, surface-modification, thiourea, PVP

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