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Synthesis of a novel hedgehog-shaped Bi2S3 nanostructure for a sensitive electrochemical glucose biosensor.
- Source :
- New Journal of Chemistry; 10/21/2021, Vol. 45 Issue 39, p18387-18391, 5p
- Publication Year :
- 2021
-
Abstract
- A novel hedgehog-shaped bismuth sulfide (HS-Bi<subscript>2</subscript>S<subscript>3</subscript>) nanostructure was for the first time explored as an electrode material for biosensing. Using cetyltrimethyl ammonium bromide (CTAB)-trimellitic acid as a composite soft template, the HS-Bi<subscript>2</subscript>S<subscript>3</subscript> nanostructure was synthesized by a hydrothermal route. Using glucose oxidase (GOx) as the model, the HS-Bi<subscript>2</subscript>S<subscript>3</subscript> nanostructure was employed to immobilize GOx for the development of a sensitive electrochemical glucose biosensor. The characterization of HS-Bi<subscript>2</subscript>S<subscript>3</subscript> and the biosensor was performed by scanning electron microscopy, X-ray diffraction spectroscopy, Fourier transform infrared spectroscopy and cyclic voltammetry. The hedgehog-shaped nanostructure of Bi<subscript>2</subscript>S<subscript>3</subscript> has a large specific surface area to trap a large number of enzyme molecules, and at the same time greatly enhances the direct-electron-transfer action of enzymes. The HS-Bi<subscript>2</subscript>S<subscript>3</subscript>-based biosensor shows a wide linear range of 0.005–1.7 mmol L<superscript>−1</superscript> and a low detection limit of 1.6 μmol L<superscript>−1</superscript> for glucose at −0.37 V, which presents much better assay performance in comparison with the glucose biosensor without HS-Bi<subscript>2</subscript>S<subscript>3</subscript>. The present electrochemical biosensor displays high selectivity, good repeatability and stability, which can be used to measure blood glucose in real serum samples. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 11440546
- Volume :
- 45
- Issue :
- 39
- Database :
- Complementary Index
- Journal :
- New Journal of Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 152954984
- Full Text :
- https://doi.org/10.1039/d1nj03392a