小尺寸单分散铂纳米粒子的制备

材料导报, 2013, 27(14): 70-73.

小尺寸单分散铂纳米粒子的制备

苑娟 ^1, , 余刚 ^2, , 刘艳菊 ^3, , 王霞 ^4, , 梦方醒 ^5,

1.河南中医学院药学院,郑州450046

2.湖南大学化学化工学院化学生物传感国家重点实验室,长沙410082

3.河南中医学院药学院,郑州450046

4.河南中医学院药学院,郑州450046

5.河南中医学院药学院,郑州450046

基金项目: 国家自然科学基金(51271074) 校级创新项目(CXXM[2012]03)

关键词：铂纳米粒子 , 微乳液 , 尺寸 , 分散性

Preparation of Platinum Nanoparticles with Monodisperse Small Size

YUAN Juan ^1, , YU Gang ^2, , LIU Yanju ^3, , WANG Xia ^4, , MENG Fangxing ^5,

1.河南中医学院药学院,郑州450046

2.湖南大学化学化工学院化学生物传感国家重点实验室,长沙410082

3.河南中医学院药学院,郑州450046

4.河南中医学院药学院,郑州450046

5.河南中医学院药学院,郑州450046

Keywords： Pt nanoparticles , microemulsion , size , dispersion

为提高铂催化剂的催化活性,降低催化剂成本,在水/TX-4(壬基酚聚氧乙烯醚)/正丁醇/环己烷微乳液体系中成功制备了粒径2～4 nm的单分散铂纳米粒子,并对其进行了TEM和EDS表征.微乳液体系的相图表明,Kw=5:3,m(S-As)/m(O)=3∶2是制备小尺寸铂纳米粒子的最佳配比.H2 PtC16和NaBH4(过量时)浓度增大时,对产物粒径影响不大,但使粒径的均匀性降低;增溶水量ω增大,粒子粒径增大.CH2 PtCl6≤25 mmol·L-1,CNaBH4≥100 mmol·L-1,ω≤2是制备小尺寸、单分散铂纳米粒子的关键,粒子尺寸可通过改变ω值调节.

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