数字农科院2.0

Fast and selective recognizes polysaccharide by surface molecularly imprinted film coated onto aldehyde-modified magnetic nanoparticles

文献类型： 外文期刊

作者： Huang, Weiwei;Yang, Xin;Zhao, Song;Zhang, Min;Hu, Xinglong;Wang, Jing;Zhao, Haitian;Huang, Weiwei;Yang, Xin;Zhang, Min;Wang, Jing;Huang, Weiwei

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关键词： Fast and selective;nanoparticles;modification

期刊名称： ANALYST

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年卷期：

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收录情况： SCI

摘要： In this work, a starch imprinted magnetic nanoparticles composite material has been successfully synthesized. This molecular imprinted material has promising practical utility in capturing polysaccharides for pharmacology applications. First, we synthesized Fe_3O_4 nanoparticles by coprecipitation, followed by the modification of tetraethyl orthosilicate (TEOS) and functional amino group and aldehyde group, respectively. Then we used functionalized Fe_3O_4@SiO_2 as the magnetic cores, starch as the template, 3-aminophenylboronic acid (APBA) as the functional monomer and ammonium persulphate (APS) as the initiator. Magnetic molecularly imprinted nanoparticles (MMIPs) were synthesized by surface-imprinted polymerization under airtight tubes at room temperature for 24 h. MMIPs were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), thermal gravimetric analysis (TGA), X-ray diffraction (XRD) and vibrating sample magnetometer (VSM) analysis. This showed a high saturation magnetization value (5.59 emu g~(-1)) easily reached under an external magnetic field. The binding experiments were shown to have relatively high adsorption capacity (15.45 mg g~(-1)) and selective recognition ability over structurally related compounds. Therefore, MMIPs provide a sensitive and selective approach and offer the potential to become a new key for polysaccharide separation and purification.

分类号： O65

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