A nanocomposite prepared from magnetite nanoparticles, polyaniline and carboxy-modified graphene oxide for non-enzymatic sensing of glucose View Full Text


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Article Info

DATE

2019-05

AUTHORS

Razia Batool, Muhammad Asim Akhtar, Akhtar Hayat, Dongxue Han, Li Niu, Muhammad Ashfaq Ahmad, Mian Hasnain Nawaz

ABSTRACT

The authors report on the synthesis of carboxy functionalized graphene oxide (fGO) decorated with magnetite (Fe3O4) nanoparticles. The resulting nanomaterial was used to prepare a composite with polyaniline (PANI) which was characterized by UV-vis, Fourier transform-infrared and Raman spectroscopies. Its surface morphologies were characterized by atomic force and scanning electron microscopies. A screen-printed carbon electrode was then modified with the nanocomposite to obtain an enzyme-free glucose sensor. The large surface of fGO and Fe3O4 along with the enhanced charge transfer capability of PANI warrant a pronounced electrochemical response (typically measured at 0.18 V versus Ag/AgCl) which is suppressed in the presence of glucose. This reduction of current by glucose was used to design a sensitive method for quantification of glucose. The response of the modified SPCE is linear in the 0.05 μM - 5 mM glucose concentration range, and the lower detection limit is 0.01 μM. Graphical abstract Schematic illustration of in-situ anchoring of Iron oxide on functionalized graphene oxide and synthesis of its polymeric nanocomposite for non-enzymatic detection of Glucose. The nanocomposite modified screen printed interface enabled monitoring of glucose at lower potential with higher precision. GO (graphene oxide), fGO (functionalized graphene oxide), PANI (polyaniline). More... »

PAGES

267

References to SciGraph publications

  • 2015-04. Core-shell–CuFe2O4/PPy nanocomposite enzyme-free sensor for detection of glucose in JOURNAL OF SOLID STATE ELECTROCHEMISTRY
  • 2016-07. Amperometric enzyme-free glucose sensor based on the use of a reduced graphene oxide paste electrode modified with electrodeposited cobalt oxide nanoparticles in MICROCHIMICA ACTA
  • 2017-10. Functionalized graphene oxide–polypyrrole–chitosan (fGO–PPy–CS) modified screen-printed electrodes for non-enzymatic hydrogen peroxide detection in JOURNAL OF NANOPARTICLE RESEARCH
  • 2015-04. Enzyme-free sensing of glucose on a copper electrode modified with nickel nanoparticles and multiwalled carbon nanotubes in MICROCHIMICA ACTA
  • 2018-01. Electrochemical nonenzymatic sensing of glucose using advanced nanomaterials in MICROCHIMICA ACTA
  • 2015-07. Enzyme-free glucose sensing based on Fe3O4 nanorod arrays in MICROCHIMICA ACTA
  • 2017-12. Highly Efficient Non-Enzymatic Glucose Sensor Based on CuO Modified Vertically-Grown ZnO Nanorods on Electrode in SCIENTIFIC REPORTS
  • 2016-07. Enzyme-free impedimetric glucose sensor based on gold nanoparticles/polyaniline composite film in JOURNAL OF SOLID STATE ELECTROCHEMISTRY
  • 2015-11. Nonenzymatic sensing of glucose at neutral pH values and low working potential using a glassy carbon electrode modified with platinum-iron alloy nanoparticles on a carbon support in MICROCHIMICA ACTA
  • 2014-02. Amperometric nonenzymatic glucose sensor based on a glassy carbon electrode modified with a nanocomposite made from nickel(II) hydroxide nanoplates and carbon nanofibers in MICROCHIMICA ACTA
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/s00604-019-3364-2

    DOI

    http://dx.doi.org/10.1007/s00604-019-3364-2

    DIMENSIONS

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    PUBMED

    https://www.ncbi.nlm.nih.gov/pubmed/30937549


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