物理化学学报 >> 2002, Vol. 18 >> Issue (01): 79-81.doi: 10.3866/PKU.WHXB20020118

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非水反相微乳中NaCl纳米粒子的制备

张丽;程虎民;马季铭   

  1. 北京大学化学与分子工程学院,北京　100871
  • 收稿日期:2001-07-16 修回日期:2001-09-12 发布日期:2002-01-15
  • 通讯作者: 程虎民 E-mail:hmcheng@chem.pku.edu.cn

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 E-mail:hmcheng@chem.pku.edu.cn

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摘要： 在乙醇/Brij 30/十六烷反相微乳中利用无水NaAc与HCl反应制备了水可溶性晶态NaCl纳米粒子,平均粒径为 60 nm.与在甲酰胺/AOT/正庚烷反相微乳中制备的粒径约为1 μm的NaCl粒子进行比较,表明在特定条件下,非水微乳可以作为合成水可溶性纳米粒子的有效介质.

关键词: 纳米粒子, 非水微乳, 表面活性剂, C12H25(OCH2CH2)4OH(Brij 30), NaCl

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