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The influence of deposition time on electrochemical performance of Prussian blue-modified submicron-structured gold electrodes for hydrogen peroxide sensing

Xiaogang Mei, Siyuan Lu, and Ying Chen

School of Mechanical Engineering and Mechanics, Key Laboratory of Impact and Safety Engineering, Ministry of Education, Ningbo University, Ningbo, People’s Republic of China

 

E-mail: m515889769@163.com

Received: 25 January 2022  Accepted: 3 April 2022

Abstract:

Abstract

Submicron-structured gold (SMG) exhibits promising prospects for the preparation of Prussian blue (PB)-modified amperometric hydrogen peroxide (H2O2) sensor. Herein, the influence of deposition time on the microstructure and electrochemical properties of SMG/PB-modified electrodes was researched through scanning electron microscope (SEM), atomic force microscope (AFM), cyclic voltammograms (CVs), and chronoamperometry methods. It turned out that the thickness of the PB film on the electrode surface is increased in the deposition time, and the SMG/PB-modified electrodes exhibited the widest linear range and best stability under the optimized deposition time of 240 s. It turns out that thicker PB layer can provide more active PB particles on the electrode’s surface, improving the detecting performance of PB-modified SMG electrodes.

Graphical abstract

Keywords: Prussian blue-modified electrodes; Deposition time; Submicron-structured gold; Hydrogen peroxide monitoring

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-022-02212-1

 

Chemical Papers 76 (8) 4763–4775 (2022)

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