食品科学 ›› 2010, Vol. 31 ›› Issue (9): 86-88.doi: 10.7506/spkx1002-6630-201009021

• 基础研究 • 上一篇    下一篇

表面氨基化的Fe3O4/SiO2复合磁性纳米粒子提取白酒中羧酸的研究

朱延松,韩延东,白 丹,辛 广   

  1. 鞍山师范学院化学系
  • 收稿日期:2009-09-29 修回日期:2010-01-09 出版日期:2010-05-01 发布日期:2010-12-29
  • 通讯作者: 朱延松 E-mail:outstandingzhu@163.com
  • 基金资助:

    2007 年鞍山市科委项目

Extraction of Carboxylic Acid from Wine Using Fe3O4/SiO2 Nanoparticles Modified with Amino Groups

ZHU Yan-song,HAN Yan-dong,BAI Dan,XIN Guang   

  1. Department of Chemistry, Anshan Normal University, Anshan 114005, China
  • Received:2009-09-29 Revised:2010-01-09 Online:2010-05-01 Published:2010-12-29
  • Contact: ZHU Yan-song E-mail:outstandingzhu@163.com

摘要:

利用化学共沉淀法制备磁性四氧化三铁纳米粒子,并用SiO2 和3- 氨丙基三乙氧基硅烷(APTES)依次对磁性纳米颗粒进行表面修饰,成功获得表面氨基改性后的磁性Fe3O4/SiO2 复合纳米粒子;采用红外光谱(IR)、透射电子显微镜(TEM)对氨基改性前后的Fe3O4/SiO2 复合纳米粒子的形态、结构进行表征。并利用— NH2 在常温下易与羧基反应的原理,用氨基改性后的磁性Fe3O4/SiO2 复合纳米粒子提取白酒中的羧酸类物质,用气相色谱- 质谱(GC-MS)联用对提取情况进行研究。结果表明:氨基改性后的磁性Fe3O4/SiO2 复合纳米粒子与白酒中的羧基能够发生较好的键合反应,从而实现提取白酒中羧酸的效果。

关键词: 磁性纳米材料, 硅包铁, 氨基修饰, 白酒

Abstract:

In this study, magnetic Fe3O4 nanoparticles were synthesized by chemical co-precipitation method, and aminomodified magnetic Fe3O4/SiO2 nanoparticles were obtained through adding SiO2 and APTES into Fe3O4 nanoparticles; the morphology and structure of pre- and post-modified Fe3O4/SiO2 nanoparticles by amino groups were characterized by infrared absorption spectrum (IR) and transmission electron microscopy (TEM). Gas chromatography-mass spectrum (GC-MS) was used to extract carboxylic acid from wine by magnetic amino-modified Fe3O4/SiO2 nanoparticles based on the reaction between carboxyl groups and amino group at normal temperature. These results demonstrated that magnetic amino-modified Fe3O4/SiO2 nanoparticles could extract carboxylic acid from wine with high efficiency.

Key words: magnetic nano-material, Fe3O4 coated by SiO2, amino modification, wine

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