Signal promoting role of a p-type transition metal dichalcogenide used for the detection of ultra-trace amounts of diclofenac via a labeled aptasensor
作者机构:Department of ChemisttryPayamc Noor University(PNU)TehranIran
出 版 物:《Frontiers of Chemical Science and Engineering》 (化学科学与工程前沿(英文版))
年 卷 期:2019年第13卷第4期
页 面:823-831页
核心收录:
学科分类:0817[工学-化学工程与技术] 08[工学] 0805[工学-材料科学与工程(可授工学、理学学位)] 080502[工学-材料学] 0703[理学-化学]
基 金:Payame Noor University PNU
主 题:labeled aptasensor transition metal dichalcogenide graphene oxide sodium diclofenac
摘 要:A p-type transition metal dichalcogenide(WS2)was synthesized and hybridized with graphene oxide via a simple hydrothermal *** as-prepared material was used to modify a glassy carbon electrode for the fabrication of a simple,stable,and repeatable methylene blue-labeled“signal-offaptasensor used for the sensitive determination of very low amounts of sodium diclofenac(DCF).The synthetic material,modification process,and role of WS2 in the current response enhancement were studied by X-ray diffraction,energy-dispersive X-ray spectroscopy,field emission scanning electron microscopy,high resolution transmission electron microscopy,Hall effect,cyclic voltammetry,differential pulse voltammetry,and electrochemical impedance ***,a wide linear range of DCF concentration(0.5-300 nmol/L),very low limit of detection(0.23 nmol/L),and good selectivity were obtained using the differential pulse voltammetry method with the assembled ***,the fabricated aptasensor was successfully developed for physiological real samples with significant recoveries.