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Economical and Efficient Electrochemical Sensing of Folic Acid using a Platinum Electrode Modified with Hydrothermally Synthesized Pd and Ag Co-Doped SnO2 Nanoparticles
Journal of The Electrochemical Society ( IF 3.9 ) Pub Date : 2019-08-13 , DOI: 10.1149/2.0261913jes
Asha Sharma , Sandeep Arya

In this work, an economical method of electrochemical sensing for the detection of Folic acid (FA) has been reported. A sol gel assisted hydrothermal technique was used to synthesize undoped, Ag doped and Pd-Ag co-doped, SnO2 nanoparticles. The structure, morphology, shape, and chemical composition of the synthesized nanoparticles were confirmed by XRD, FESEM, TEM, FTIR, and EDS spectroscopic techniques. Cyclic voltammetry (CV) and Differential pulse voltammetry (DPV) studies confirmed that Pd and Ag co-doped SnO2 nanoparticles show significant competency in sensing FA due to their high specific surface and excellent electrical conductivity. The platinum (Pt) electrode was modified with the synthesized nanoparticles to serve as a precise sensing agent. The resulting electrode showed viable sensing performance for detecting FA in a pharmaceutical sample with excellent recovery. The calibration plot is linear in the concentration range of 22 μM–112 μM and has a 3.47 μM detection limit. The assay is outstandingly reproducible, selective and stable.

中文翻译:

使用水热合成Pd和Ag共掺杂SnO2纳米粒子修饰的铂电极对叶酸进行经济高效的电化学传感

在这项工作中,已经报道了一种经济的电化学传感方法来检测叶酸(FA)。溶胶凝胶辅助水热技术用于合成未掺杂的,Ag掺杂的和Pd-Ag共掺杂的SnO 2纳米颗粒。通过XRD,FESEM,TEM,FTIR和EDS光谱技术确定了合成纳米颗粒的结构,形态,形状和化学组成。循环伏安法(CV)和微分脉冲伏安法(DPV)研究证实Pd和Ag共掺杂SnO 2纳米颗粒由于其高的比表面积和出色的导电性而在传感FA中显示出显着的能力。用合成的纳米粒子修饰铂(Pt)电极,以用作精确的传感剂。所得的电极显示出可行的感测性能,可用于以优异的回收率检测药物样品中的FA。校准图在22 μM–112μM的浓度范围内呈线性,检测极限为3.47μM。该测定法具有极高的重现性,选择性和稳定性。
更新日期:2019-08-14
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