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首页> 外文期刊>RSC Advances >Adsorption of bovine serum albumin on superparamagnetic composite microspheres with a Fe3O4/SiO2 core and mesoporous SiO2 shell
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Adsorption of bovine serum albumin on superparamagnetic composite microspheres with a Fe3O4/SiO2 core and mesoporous SiO2 shell

机译：用Fe3O4 / SiO2核和中孔SiO2壳体在超顺磁性复合微球上吸附牛血清白蛋白

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摘要

Magnetic sandwich structured mesoporous silica microspheres containing a silica-coated Fe3O4 core and a layered mesoporous silica shell have been successfully synthesized by multi-step reactions. The as-prepared Fe3O4/SiO2/mesoporous SiO2 (Fe3O4/SiO2/mSiO(2)) microspheres were characterized via X-ray diffractometry (XRD), transmission electron microscopy (TEM), nitrogen adsorption-desorption and vibrating sample magnetometry (VSM). The results indicate that these materials possess superior porosity with high surface areas and large pore volumes, while still maintaining the microspheres morphologies, which is beneficial for enrichment and purification applications. The microspheres were applied as adsorbents for bovine serum albumin (BSA). The adsorption equilibrium was well explained in the entire experimental region by the Langmuir isotherm model and the maximum adsorption amounts of BSA were calculated as high as 289 mg g(-1). This work provides a promising approach for the design and synthesis of multifunctional microspheres, which can be used for potential applications in a variety of biomedical fields including drug delivery and biosensors.
机译：通过多步反应成功地合成了含有二氧化硅涂覆的Fe3O4核和层状介孔二氧化硅壳的磁性夹层结构化学微球。通过X射线衍射术（XRD），透射电子显微镜（TEM），氮吸附 - 解吸和振动样品磁度（VSM），以X射线衍射法（XRD），透射电子显微镜（VSM）表征为制备的Fe 3 O 4 / SiO 2 /中孔SiO 2（Fe 3 O 4 / SiO 2 / MSIO（2））微球。结果表明，这些材料具有高表面积和大孔体积的优异孔隙率，同时仍然保持微球体形态，这有利于富集和纯化应用。将微球作为牛血清白蛋白（BSA）的吸附剂。通过Langmuir等温线模型在整个实验区中解释了吸附平衡，并且BSA的最大吸附量计算为高达289mg g（-1）。这项工作为多功能微球的设计和合成提供了有希望的方法，可用于包括药物递送和生物传感器的各种生物医学领域的潜在应用。

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  • 来源
    《RSC Advances》 |2015年第126期|共7页
  • 作者

    Hou Xuemei; Xu Hongbo; Pan Lei; Tian Yanlong; Zhang Xiang; Ma Lihua; Li Yao; Zhao Jiupeng;

  • 作者单位

    Harbin Inst Technol Sch Chem Engn &

    Technol Harbin 150006 Peoples R China;

    Harbin Inst Technol Sch Chem Engn &

    Technol Harbin 150006 Peoples R China;

    Harbin Inst Technol Sch Chem Engn &

    Technol Harbin 150006 Peoples R China;

    Harbin Inst Technol Ctr Composite Mat Harbin 150006 Peoples R China;

    Harbin Inst Technol Ctr Composite Mat Harbin 150006 Peoples R China;

    Harbin Inst Technol Sch Chem Engn &

    Technol Harbin 150006 Peoples R China;

    Harbin Inst Technol Ctr Composite Mat Harbin 150006 Peoples R China;

    Harbin Inst Technol Sch Chem Engn &

    Technol Harbin 150006 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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