Jump to main content
Jump to site search

Issue 12, 2017
Previous Article Next Article

Ni–Al/layered double hydroxide/Ag nanoparticle composite modified carbon-paste electrode as a renewable electrode and novel electrochemical sensor for hydrogen peroxide

Author affiliations

Abstract

In the present study, a simple and highly sensitive electrochemical method was developed for the determination of hydrogen peroxide (H2O2) through a Ni–Al/layered double hydroxide/Ag nanoparticle composite modified carbon-paste electrode (Ni–Al/LDH/Ag NPs/CPE) as a renewable electrode in 0.1 M phosphate buffer solution (PBS, pH = 7.0). Scanning electron microscopy (SEM), atomic force microscopy (AFM), and X-ray diffraction (XRD) were performed for the characterization of the Ni–Al/LDH/Ag NP composite. The electrocatalytic activity of the Ni–Al/LDH/Ag NPs/CPE for H2O2 reduction was studied by cyclic voltammetry and chronoamperometric (at an applied potential of −0.9 V) methods. The prepared renewable modified electrode as a H2O2 sensor shows good electrocatalytic activity, fast response time, good stability and reproducibility. The present sensor also displays a linear range from 10 μM to 10 mM concentration of H2O2 with a detection limit of 6 μM (S/N = 3) and sensitivity of 1.863 μA mM−1 cm−2. This sensor was employed successfully for the determination of H2O2 in real samples by the chronoamperometric method, which indicates its applicability in practical analysis.

Graphical abstract: Ni–Al/layered double hydroxide/Ag nanoparticle composite modified carbon-paste electrode as a renewable electrode and novel electrochemical sensor for hydrogen peroxide

Back to tab navigation

Publication details

The article was received on 22 Dec 2016, accepted on 25 Feb 2017 and first published on 27 Feb 2017


Article type: Paper
DOI: 10.1039/C6AY03421G
Citation: Anal. Methods, 2017,9, 1956-1964
  •   Request permissions

    Ni–Al/layered double hydroxide/Ag nanoparticle composite modified carbon-paste electrode as a renewable electrode and novel electrochemical sensor for hydrogen peroxide

    B. Habibi, F. F. Azhar, J. Fakkar and Z. Rezvani, Anal. Methods, 2017, 9, 1956
    DOI: 10.1039/C6AY03421G

Search articles by author

Spotlight

Advertisements