• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Der Pharma Chemica: journal for medicinal chemistry, pharmaceutical chemistry and computational chemistry >Immobilization of a titanium complex on the surface of nan magnetite and characterization of the resulted material
【24h】

Immobilization of a titanium complex on the surface of nan magnetite and characterization of the resulted material

机译：将钛配合物固定在纳米磁铁矿的表面上，并对所得材料进行表征

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Nan magnetite is a class of nanoparticles which has intereting behavior using magnetic fields. In such a way, each nanoparticle becomes a single magnetic domain and show superpara magnetic behavior, so it can be attracted to external magnetic field and will be easily redispersed after the removal of this field. Magnetitenanoparticles were prepared by co precipitation of Fe2 + and Fe3+ with NH4OH and then, Silica was coated on to the surface of the magnetite Nan particles by Tetraoethylorthosilicate. Then superpara magnetic magnetite Nan particles were functionalized with 3-amionproplytrimetoxcysilane so that, at the next step, acetyl ferrocene can attach to magnetite nanoparticles with forming bound. The resulted nonmaterial was characterized with different physicochemical techniques such as FT-IR and atomic absorption spectroscopies, X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), vibrating sample magnetometry (VSM) and thrmogravimetric analyses (TGA and DTA). VSM analysis showed super paramagnetic properties of the materials and TEM and SEM analyses indicated the relatively uniform spherical nanoparticles with 15 nm average size.
机译：Nan磁铁矿是一类纳米粒子，利用磁场具有相互作用的行为。以这种方式，每个纳米粒子变成单个磁畴并显示超顺磁性，因此它可以被外部磁场吸引，并且在去除该磁场后将易于重新分散。通过将Fe2 +和Fe3 +与NH4OH共沉淀来制备磁铁矿纳米粒子，然后用原硅酸四乙酯将二氧化硅涂覆在磁铁矿Nan粒子的表面。然后将超顺磁性磁铁矿Nan粒子用3-氨基丙三茂氧硅烷进行官能化处理，以便在下一步中，乙酰基二茂铁可以附着在磁铁矿纳米粒子上并形成结合。所得的非物质通过不同的物理化学技术进行表征，例如FT-IR和原子吸收光谱法，X射线衍射（XRD），扫描电子显微镜（SEM），透射电子显微镜（TEM），振动样品磁法（VSM）和重量分析法（TGA和DTA）。 VSM分析显示出材料具有超顺磁性，TEM和SEM分析显示出相对均匀的球形纳米颗粒，平均粒径为15 nm。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号