Enzymeless voltammetric hydrogen peroxide sensor based on the use of PEDOT doped with Prussian Blue nanoparticles

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• 作者：Junjie Wang ; Yu Wang ; Min Cui ; Shenghao Xu ; Xiliang Luo
• 关键词：Electroanalysis ; Chemical sensor ; Electrochemical deposition ; Cyclic voltammetry ; Conducting polymer ; Nanocomposite
• 刊名：Microchimica Acta
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：184
• 期：2
• 页码：483-489
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Nanochemistry; Nanotechnology; Characterization and Evaluation of Materials; Analytical Chemistry; Microengineering;
• 出版者：Springer Vienna
• ISSN：1436-5073
• 卷排序：184

文摘

An electrochemical sensor for H₂O₂ was developed based on electrochemically deposited Prussian blue (PB) nanoparticles doped poly(3,4-ethylenedioxythiophene) (PEDOT). The PEDOT/PB composite was composed of PEDOT wrapped PB nanoparticles, where the conducting polymer PEDOT not only protected the PB particles to warrant high stability, but also connected them to enhance the electron transfer. Owing to the excellent conductivity of PEDOT and unique electrocatalytic activity of PB, the PEDOT/PB modified electrode exhibited good catalytic activity toward the electrochemical reduction of H₂O₂, and was used for the detection of H₂O₂ in concentrations ranging from 0.5 to 839 μM, with a detection limit of 0.16 μM. Moreover, the sensor also demonstrated excellent reproducibility, selectivity and long-term stability, showing great promise for the fabrication of electrochemical sensors and H₂O₂ related biosensors.