物理化学学报 >> 1999, Vol. 15 >> Issue (01): 5-9.doi: 10.3866/PKU.WHXB19990102

研究论文 上一篇    下一篇

亲油性硫化锰纳米微粒的化学制备和结构

马良, 徐洮, 张治军, 赵家政   

  1. 中国科学院兰州化学物理研究所固体润滑开放实验室，兰州 730000|河南大学化学化工学院，开封475001
  • 收稿日期:1998-03-09 修回日期:1998-05-15 发布日期:1999-01-15
  • 通讯作者: 徐洮

Preparation and Stduy on the Structure of Surface-Modified MsS Nanoparticles

Ma Liang, Xu Tao, Zhang Zhi-Jun, Zhao Jia-Zheng   

  1. Laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics,Chinese Academy of Science,Lanzhou 730000|Henan University,Kifeng 475001
  • Received:1998-03-09 Revised:1998-05-15 Published:1999-01-15
  • Contact: Xu Tao

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摘要：

采用表面修饰的方法，在醇水体系中制备了双十八烷基二硫代磷酸（DDP）表面修饰的硫化锰（MnS）纳米微粒. 用XPS、FTIR、TGA、TEM和HREM等技术对用表面修饰法得到的MnS纳米微粒的结构、化学稳定性和热稳定性进行研究，结果表明：表面修饰得到的MnS纳米微粒有较好的化学稳定性和热稳定性，并且微粒的分散件好、不团聚，制备出的MnS纳米晶核具有γ-MnS的晶型结构.

关键词: 表面修饰, 纳米微粒, 硫化锰, DDP

Abstract:

Surface-modified MnS nanoparticles were synthesized in mixed solvent of water-ethanol by the reaction of MnCl2•2H2O, Na2S•9H2O and surface modification agent dialkyldithiophosphate(DDP). The structure of surface-modified MnS nanoparticles was investigated by XPS,FTIR,TGA, XRD, TEM and HREM. The results show that the DDP-capped MnS nanoparticle consists of a layer of DDP molecules and MnS nanoparticles core. The diameter of DDP-capped MnS nanoparticles is 510 nm. The crystalline structure of inorganic MnS nanoparticle core is γ-MnS. Meanwhile, Surface-modified MnS nanoparticles have better chemical stability and thermostability. They are also well dispersed in organic solvents such as trichloromethane, benzene and in liquid paraffin.

Key words: Surface modification agent, MnS nanoparticle, DDP