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Balamurugan Muthukutty,Jaysiva Ganesamurthi,Tse-Wei Chen,Shen-Ming Chen,Jaysan Yu,Xiaoheng Liu 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.106 No.-
Owing to the enhanced electrical conductivity, sensitivity, selectivity, cost-effective, and simple samplingmethods, rare-earth pyrochlore structured stannates (M2Sn2O7) have been referred to as an elegant systemfor electrochemical sensing applications. Because of this, novel pyrochlore structure lanthanum stannatenanoparticles (La2Sn2O7 NPs) was synthesized via an eco-friendly method and further characterizedthrough various spectroscopic & microscopic techniques. The electrocatalytic property of La2Sn2O7 NPswas examined by fabricating it over a glassy carbon electrode (La2Sn2O7 NPs/GCE) in acidic media as aworking electrolyte. The effect of variables such as the amount of La2Sn2O7 NPs suspension and pH ofthe solution was optimized. Subsequently, after optimizing measurement conditions, the proposedLa2Sn2O7 NPs sensor shows excellent selectivity, sensitivity, linear ranges (0.01 to 127 mM & 127–1437mM), the limit of detection (6 nM) and limit of quantification (0.10 mM). The active sites, presence of metaloxide bonds, higher resistivity, and faster electron mobility paid away for the enhanced electrocatalyticactivity of the proposed sensor. Furthermore, the La2Sn2O7 NPs act as promising electrode modifiers forreal sample investigation of clove samples with accepted recovery rates (86–98%). Hence, the La2Sn2O7NPs sensor act as a hopeful electrode modifier for the determination of eugenol.
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