生物传感器
抗坏血酸
纳米结构
检出限
计时安培法
纳米复合材料
循环伏安法
纳米技术
材料科学
电化学气体传感器
电化学
介电谱
纳米颗粒
化学工程
化学
电极
色谱法
物理化学
食品科学
工程类
作者
Baishali Mahanta,Hasan Al Mamun,Madhabi Konwar,Shyamalee Patar,Pranjal Saikia,Lakhya Jyoti Borthakur
标识
DOI:10.1002/slct.202205030
摘要
Abstract Designing an ultra‐sensitive and stable sensor platform for real‐time sensing of dopamine (DA), ascorbic acid (AA) and uric acid (UA) is highly desirable. A simple, green and facile method of synthesis of Ag nanoparticle (AgNP) decorated MoS 2 /rGO nanocomposite for simultaneous electrochemical detection of DA, AA and UA is reported. The unique structural morphology imparts higher electrical conductivity and electrochemical sensitivity to the prepared nanocomposite. The modified electrode material exhibits superior electrocatalytic performance for the detection of DA within a wide linear range of 2.5 to 12.5 μм in presence of interfering electro‐active species AA and UA, with limit of detection (LOD) of 0.009 μм. The sensor exhibits excellent stability with up to 500 repetitive cycles of Cyclic Voltammetry. Chronoamperometry and Electrochemical Impedance reveal sufficient electrochemical stability to find potential diagnostic applications. This nanostructure can emerge as a promising electrode for the detection of DA and UA in human urine samples.
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