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Study of structural, optical and electrochemical properties of GO/TiO2 nanostructures prepared by microwave-assisted technique for its application as a glucose sensor

Study of structural, optical and electrochemical properties of GO/TiO2 nanostructures prepared by... The present work proposes a microwave-assisted technique for the synthesis of graphene oxide and titanium dioxide (GO/TiO2) nanocomposite. XRD, FESEM, EDS, UV, FTIR, Raman, and XPS spectroscopy were employed to study the elemental composition and surface morphology of the nanocomposite. FESEM revealed the spherical morphology of GO/TiO2 nanocomposite. It was observed that nanosized densely packed spherical TiO2 particles were attached to graphene sheets. A modified electrode was prepared using fluorine-doped tin oxide (FTO) substrate for electrochemical detection of the non-enzymatic glucose sensor. Linear sweep voltammetry (LSV) and cyclic voltammetry (CV) were adopted for the electrochemical measurements of GO/TiO2/FTO electrodes. The high sensitivity of 426.5 μA mM−1.cm2, the linear detection range of 0.1 mM to 11 mM, the low detection threshold of 0.1 μM along with quick response time of 6 s towards glucose sensing are some highlights of the prepared electrode. Moreover, the microwave technique used for the preparation of GO/TiO2 composite is rapid and cost-effective. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Advances in Natural Sciences: Nanoscience and Nanotechnology IOP Publishing

Study of structural, optical and electrochemical properties of GO/TiO2 nanostructures prepared by microwave-assisted technique for its application as a glucose sensor

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Publisher
IOP Publishing
Copyright
© 2021 Vietnam Academy of Science & Technology
eISSN
2043-6262
DOI
10.1088/2043-6262/ac2ba4
Publisher site
See Article on Publisher Site

Abstract

The present work proposes a microwave-assisted technique for the synthesis of graphene oxide and titanium dioxide (GO/TiO2) nanocomposite. XRD, FESEM, EDS, UV, FTIR, Raman, and XPS spectroscopy were employed to study the elemental composition and surface morphology of the nanocomposite. FESEM revealed the spherical morphology of GO/TiO2 nanocomposite. It was observed that nanosized densely packed spherical TiO2 particles were attached to graphene sheets. A modified electrode was prepared using fluorine-doped tin oxide (FTO) substrate for electrochemical detection of the non-enzymatic glucose sensor. Linear sweep voltammetry (LSV) and cyclic voltammetry (CV) were adopted for the electrochemical measurements of GO/TiO2/FTO electrodes. The high sensitivity of 426.5 μA mM−1.cm2, the linear detection range of 0.1 mM to 11 mM, the low detection threshold of 0.1 μM along with quick response time of 6 s towards glucose sensing are some highlights of the prepared electrode. Moreover, the microwave technique used for the preparation of GO/TiO2 composite is rapid and cost-effective.

Journal

Advances in Natural Sciences: Nanoscience and NanotechnologyIOP Publishing

Published: Sep 1, 2021

Keywords: microwave heating; Graphene oxide; glucose; biosensor; nonenzymatic; Classification numbers; 2.00; 5.01; 5.15; 6.08; 6.09

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