Synthesis of Imino Stabilized Iron Oxide Nanosensor for Selective Detection of Lead Ions

Erum Hasan, S. Ali, Ambreen Zia, S. Begum, Salman Tariq Khan, Syed M. Bukhari
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Abstract

The present work describes the successful preparation of iron oxide nanoparticles (NSB1) stabilized with 4-((2-hydroxybenzylidene)amino)benzoic acid. The characterization has been achieved through ultraviolet visible (UV-Vis), fourier transform infra-red (FTIR) spectroscopy and scanning electron microscopy (SEM) with electron dispersive X-ray elemental analysis (EDX). These magnetic nanoparticles have exhibited significant chemosensing properties in the aqueous media to screen Cr3+, Cd2+, Li+, Co2+, Al3+, Pb2+, Ni2+ and Sr2+ ions. However, lead (Pb2+) ions have shown the highest selectivity as compared to other metal ions without any interference in the competitive ion study. The detection limit of Pb2+ ions was found to be 1.7 µM by this nanosensor. The binding ratio and stoichiometry was found to be 1:1 as measured by Job’s plot. The binding strength was also computed through Benesei-Hildebrand equation.
用于铅离子选择性检测的亚胺稳定氧化铁纳米传感器的合成
本文成功制备了4-((2-羟基苄基)氨基苯甲酸稳定的氧化铁纳米颗粒(NSB1)。通过紫外可见(UV-Vis),傅里叶变换红外(FTIR)光谱和扫描电子显微镜(SEM)与电子色散x射线元素分析(EDX)进行了表征。这些磁性纳米颗粒在水介质中表现出显著的化学感应性能,可筛选Cr3+、Cd2+、Li+、Co2+、Al3+、Pb2+、Ni2+和Sr2+离子。然而,在竞争离子研究中,铅(Pb2+)离子与其他金属离子相比,在没有任何干扰的情况下表现出最高的选择性。该传感器对Pb2+离子的检出限为1.7µM。根据约伯图测定,其结合比和化学计量为1:1。结合强度通过Benesei-Hildebrand方程计算。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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