Jump to main content
Jump to site search

Issue 2, 2019
Previous Article Next Article

High surface area 3D-MgO flowers as the modifier for the working electrode for efficient detection of 4-chlorophenol

Author affiliations

Abstract

We report for the first time, magnesium oxide (MgO) 3D-flowers, synthesized by a simple reflux method. The synthesized MgO 3D-flowers were characterized by powder X-ray diffraction (PXRD), ultra-violet visible (UV-vis) spectroscopy, scanning electron microscopy (SEM) and energy-dispersive X-ray (EDX) mapping to confirm their purity, morphology and elemental composition. The synthesized MgO 3D-flowers had a very high specific surface area of 218 m2 g−1 as confirmed by the N2 adsorption–desorption isotherm. These MgO 3D-flowers were employed as an electrode modifier for the construction of an electrochemical sensor to detect 4-chlorophenol (4-CP). The active surface area of the glassy carbon electrode (GCE) was modified with MgO 3D-flowers with the assistance of 0.1% Nafion (MgO 3D-flowers/GCE) and the MgO 3D-flowers/GCE sensor shows an excellent electrocatalytic behavior towards 4-CP. The constructed MgO 3D-flowers/GCE sensor exhibits the limits of detection (LOD) of 45 nM, 68 nM, and 52 nM, and sensitivities of 2.84 μA μM−1 cm−2, 5.94 μA μM−1 cm−2, and 10.67 μA μM−1 cm−2 in cyclic voltammetry (CV), differential pulse voltammetry (DPV) and square wave voltammetry (SWV) techniques, respectively. The modified MgO 3D-flowers/GCE sensor displays excellent performance in terms of sensitivity, selectivity, repeatability and reproducibility. The excellent electrocatalytic activity of the proposed MgO 3D-flowers/GCE sensor was attributed to the high specific surface area, surface electron transfer ability and the presence of the edges/corner defects of MgO 3D-flowers.

Graphical abstract: High surface area 3D-MgO flowers as the modifier for the working electrode for efficient detection of 4-chlorophenol

Back to tab navigation

Supplementary files

Publication details

The article was received on 05 Jun 2018, accepted on 04 Nov 2018 and first published on 05 Nov 2018


Article type: Paper
DOI: 10.1039/C8NA00007G
Nanoscale Adv., 2019,1, 719-727
  • Open access: Creative Commons BY-NC license
  •   Request permissions

    High surface area 3D-MgO flowers as the modifier for the working electrode for efficient detection of 4-chlorophenol

    K. Ahmad and Shaikh M. Mobin, Nanoscale Adv., 2019, 1, 719
    DOI: 10.1039/C8NA00007G

    This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material and it is not used for commercial purposes.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
    • For reproduction of material from PCCP:
      [Original citation] - Published by the PCCP Owner Societies.
    • For reproduction of material from PPS:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
    • For reproduction of material from all other RSC journals:
      [Original citation] - Published by The Royal Society of Chemistry.

    Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Search articles by author

Spotlight

Advertisements