Acta Phys. -Chim. Sin. ›› 1999, Vol. 15 ›› Issue (01): 5-9.doi: 10.3866/PKU.WHXB19990102

• ARTICLE • Previous Articles     Next Articles

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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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