Efficient nonenzymatic hydrogen peroxide sensor in acidic media based on Prussian blue nanoparticles-modified poly(o-phenylenediamine)/glassy carbon electrode

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• 作者：Reza Ojani ; ^{fer-o@umz.ac.ir" class="auth_mail" title="E-mail the corresponding author} ; Parisa Hamidi ; Jahan-Bakhsh Raoof
• 关键词：Self-assembly ; Prussian blue nanoparticles ; Hydrogen peroxide ; Sensor
• 刊名：Chinese Chemical Letters
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：27
• 期：3
• 页码：481-486
• 全文大小：1571 K

文摘

The Prussian blue nanoparticles (PBNPs) were prepared by a self-assembly process, on a glassy carbon (GC) electrode modified with a poly(o-phenylenediamine) (PoPD) film. The stepwise fabrication process of PBNPs-modified PoPD/GCE was characterized by scanning electron microscopy (SEM) and electrochemical impedance spectroscopy. The prepared PBNPs showed an average size of 70 nm and a homogeneous distribution on the surface of modified electrodes. The PBNPs/PoPD/GCE showed adequate mechanical, electrochemical stability and good sensitivity in comparison with other PB based H₂O₂ sensors. The present modified electrode exhibited a linear response for H₂O₂ reduction over the concentration range of 1–58.22 μmol L⁻¹ with a detection limit of ca. 0.8 μmol L⁻¹ (S/N = 3), and sensitivity of 3187.89 mA (mol L⁻¹)⁻¹ cm⁻² using the amperometric method. This sensor was employed for the H₂O₂ determination in real sample and also exhibited good interference resistance and selectivity.