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Highly selective and sensitive magnetic silica nanoparticles based fluorescent sensor for detection of Zn~(2+) ions

机译:基于高选择性和灵敏度的磁性二氧化硅纳米粒子的荧光传感器,用于检测Zn〜(2+)离子

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In this work, quinoline group modified multifunctional silica nanoparticles having high magnetization and excellent Zn~(2+) selectivity have been successfully prepared. These multifunctional nanoparticles were characterized by high resolution transmission electron microscopy (HRTEM), Fourier transform infrared spectroscopy (FT-IR). thermal gravimetric analysis (TGA), X-ray powder diffraction (XRD) and vibrating sample magnetometer (VSM). The characterization data indicated that the organic ligand was successfully grafted on the surface of the magnetic silica nanoparticles. The fluorescent properties of the nanosensor were characterized and employed to detect Zn~(2+) with excellent selectivity and sensitivity (0.1 μM) toward Zn~(2+) over other cations even in trace amount.
机译:在这项工作中,已成功制备了具有高磁化强度和Zn〜(2+)选择性的喹啉基改性多功能二氧化硅纳米粒子。这些多功能纳米粒子的特征是高分辨率透射电子显微镜(HRTEM),傅立叶变换红外光谱(FT-IR)。热重量分析(TGA),X射线粉末衍射(XRD)和振动样品磁力计(VSM)。表征数据表明有机配体成功地接枝在磁性二氧化硅纳米颗粒的表面上。表征了纳米传感器的荧光性质,并用于检测Zn〜(2+),即使痕量痕量,其对其他阳离子也具有极好的选择性和对Zn〜(2+)的敏感性(0.1μM)。

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