Development of electrochemical sensor for the determination of palladium ions (Pd²⁺) using flexible screen printed un-modified carbon electrode

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• 作者：Murugan Velmurugan^a ; Balamurugan Thirumalraj^a ; Shen-Ming Chen^a ; ^b ; ^{smchen78@ms15.hinet.net" class="auth_mail" title="E-mail the corresponding author} ; Fahad M.A. Al-Hemaid^b ; M. Ajmal Ali^b ; Mohamed S. Elshikh^b
• 关键词：Un-modified screen printed carbon electrode ; Adsorption ; Electrochemical determination ; Differential plus voltammetry ; Heavy metal ions biosensor
• 刊名：Journal of Colloid and Interface Science
• 出版年：2017
• 出版时间：1 January 2017
• 年：2017
• 卷：485
• 期：Complete
• 页码：123-128
• 全文大小：1632 K

文摘

To date, the development of different modified electrodes have received much attention in electrochemistry. The modified electrodes have some drawbacks such as high cost, difficult to handle and not eco friendly. Hence, we report an electrochemical sensor for the determination of palladium ions (Pd²⁺) using an un-modified screen printed carbon electrode has been developed for the first time, which are characterized and studied via scanning electron microscope and cyclic voltammetry. Prior to determination of Pd²⁺ ions, the operational conditions of un-modified SPCE was optimized using cyclic voltammetry and showed excellent electro-analytical behavior towards the determination of Pd²⁺ ions. Electrochemical determination of Pd²⁺ ions reveal that the un-modified electrode showed lower detection limit of 1.32 μM with a linear ranging from 3 to 133.35 μM towards the Pd²⁺ ions concentration via differential pulse voltammetry. The developed sensor also applied to the successfully determination of trace level Pd²⁺ ions in spiked water samples. In addition, the advantage of this type of electrode is simple, disposable and cost effective in electrochemical sensors.