期刊
CHEMICAL PAPERS
卷 76, 期 9, 页码 5459-5469出版社
SPRINGER INT PUBL AG
DOI: 10.1007/s11696-022-02254-5
关键词
Silver nanowires; Graphene oxide; Square-wave anodic stripping voltammetry; Lead detection
资金
- Ministry of Science and Technology of Vietnam [NDT.42.KR/18]
- Global Infrastructure Program through the National Research Foundation of Korea - Ministry of Science and ICT [2017K1A3A1A05069766]
- National Research Foundation of Korea [2017K1A3A1A05069766] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
A new method for fabricating high-performance electrochemical sensors for lead ion detection using square-wave anodic stripping voltammetry was developed. The electrode exhibited good conductivity and high stability, suitable for detecting Pb(II).
A new approach for fabricating high-performance electrochemical sensors for lead ion detection using the square-wave anodic stripping voltammetry method was developed. The sensor consisted of a working electrode fabricated from silver nanowires (AgNWs) and graphene oxide (GO) on polyethylene terephthalate substrates. The morphological, electrochemical properties and operational parameters of the electrode were investigated. Owing to the combination of the pressing method and overcoated GO layer, the electrode possessed good conductivity and high stability, suitable for the fabrication of electrochemical sensors for detecting Pb(II). Under the optimum experimental conditions, the calibration curve exhibited a good linear relationship over a wide range of Pb(II) concentrations (0.2-60 mu g L-1), with a correlation coefficient of 0.9983. The detection limit of the sensor for Pb(II) is 0.067 mu g L-1, which is significantly less than the safety limit for drinking water defined by the World Health Organization. The electrochemical sensor exhibited good repeatability and high stability after sixty days of storage. In addition, the prepared electrochemical sensor possesses low cost, simplicity, easy to use, and the large production ability. This study contributes to the application of AgNW/GO hybrid electrodes for Pb(II) detection. [GRAPHICS] .
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