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Ag@C core–shell structure composites-decorated Ag nanoparticles: zero current potentiometry for detection of hydrogen peroxide

Huan Hao, Qinglin Sheng, and Jianbin Zheng

Shaanxi Provincial Key Laboratory of Electroanalytical Chemistry, Institute of Analytical Science, Northwest University, Xi’an, China

 

E-mail: qinglinsheng@126.com

Abstract: Ag@C core–shell structure composites were successfully synthesized by hydrothermal method, and then Ag nanoparticles were decorated on the surface of Ag@C by reduction of AgNO3. The morphology, composition and structure of the Ag@C@Ag composites were characterized by scanning electron microscopy (SEM), energy dispersive spectrometry (EDS) and X-ray diffraction (XRD). Cyclic voltammetry and amperometry were used to evaluate the electrocatalytic performance of the Ag@C@Ag/GCE for detection of H2O2. Meanwhile, a new electrochemical method of zero current potentiometry was used for electrochemical detection of H2O2. The linear range and the detection limit were from 0.2 to 10, and 0.07 μM, respectively.

Keywords: Electrochemical sensing; Zero current potentiometry; Core–shell structure; Silver nanoparticles; Hydrogen peroxide

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-016-0001-y

 

Chemical Papers 71 (3) 535–542 (2017)

Friday, July 30, 2021

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