Acta Phys. -Chim. Sin. ›› 2002, Vol. 18 ›› Issue (01): 79-81.doi: 10.3866/PKU.WHXB20020118

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Preparation of NaCl Nanoparticles in Nonaqueous Reverse Microemulsion

Zhang Li;Cheng Hu-Min;Ma Ji-Ming   

  1. College of Chemistry and Molecular Engineering,Peking University,Beijing 100871
  • Received:2001-07-16 Revised:2001-09-12 Published:2002-01-15
  • Contact: Cheng Hu-Min

Abstract: Watersoluble NaCl nanoparticles were prepared by reacting NaAc with HCl in ethanol/Brij 30/hexadecane microemulsion.The particles obtained are crystalline spheres with an average particle size of about 60 nm.In the case of using formamide/AOT/nheptane microemulsion as the reaction medium,NaCl particles can only be obtained by adding precipitant after the reaction.The latter particles are crystalline cubes with a much larger particle size(1 μm).The results show that nonaqueous reverse microemulsion may provide a new medium for the preparation of watersoluble nanoparticles and the choice of the polar solvent is critical to obtain nanosized materials.

Key words: Nanoparticles, Nonaqueous microemulsion, Surfactant, Brij 30, NaCl