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The efficient magnetic separation of the four biogenic nanoparticles from aqueous media by the unmodified iron oxide nanoparticles
International Journal of Environmental Science and Technology ( IF 3.1 ) Pub Date : 2021-01-07 , DOI: 10.1007/s13762-020-03113-0
S. Ayadi Hassan , V. Gorji , P. Ghadam

By release of nanoparticles with toxic potentials into environment, there is an urgent need for development of keen procedures for their removal. In this research, unmodified iron oxide nanoparticles were applied for the separation of the Ag/AgCl nanoparticles, Ag nanoparticles, Ag–Cu nanoparticles and Cu nanoparticles from the aqueous environment. The samples were subjected to different characterization and spectroscopic analyses before and after being exposed to magnetic separation. Scanning electron microscopy/energy-dispersive x-ray spectroscopy analysis showed the attachment of the biogenic nanoparticles onto the magnetic nanoparticles which were observed by the obvious shift in the color and the turbidity between the sample and its control. The Ag and Cu contents of the separated nanoparticles were measured by inductively coupled plasma mass spectrometry, presenting the highest recovery efficiency for Ag–Cu nanoparticles (96%). However, the other rest of the nanoparticles were trapped by a removal efficiency of more than 80%. When compared to the previous studies, the efficiency of this method was among the highest ones. The ability of this type of the magnetic nanoparticles for the adsorption of the biogenic nanoparticles enunciates them as a fast, green, convenient and keen tool for trapping and the removal of the biogenic nanoparticles from an aqueous media.



中文翻译:

未修饰的氧化铁纳米颗粒从水性介质中有效地磁性分离出四种生物纳米颗粒

通过将具有毒性潜力的纳米颗粒释放到环境中,迫切需要开发敏锐的去除方法。在这项研究中,未改性的氧化铁纳米颗粒被用于从水环境中分离出Ag / AgCl纳米颗粒,Ag纳米颗粒,Ag-Cu纳米颗粒和Cu纳米颗粒。在对样品进行磁分离之前和之后,对样品进行不同的表征和光谱分析。扫描电子显微镜/能量色散X射线光谱分析表明,生物纳米颗粒附着在磁性纳米颗粒上,这是通过样品及其对照之间颜色和浊度的明显变化而观察到的。通过电感耦合等离子体质谱法测量分离出的纳米颗粒中的银和铜含量,这表明银铜纳米颗粒的回收率最高(96%)。但是,其余的纳米颗粒则以超过80%的去除效率被捕获。与以前的研究相比,该方法的效率最高。这种类型的磁性纳米颗粒吸附生物型纳米颗粒的能力表明它们是一种快速,绿色,方便和敏锐的工具,用于从水性介质中捕获和去除生物型纳米颗粒。这种方法的效率是最高的。这种类型的磁性纳米颗粒吸附生物型纳米颗粒的能力表明它们是一种快速,绿色,方便和敏锐的工具,用于从水性介质中捕获和去除生物型纳米颗粒。这种方法的效率是最高的。这种类型的磁性纳米颗粒吸附生物型纳米颗粒的能力表明它们是一种快速,绿色,方便和敏锐的工具,用于从水性介质中捕获和去除生物型纳米颗粒。

更新日期:2021-01-08
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