Cobalt selenide nanoflake decorated reduced graphene oxide nanocomposite for efficient glucose electro-oxidation in alkaline medium

Cooray, MCD; Zhang, X; Zhang, Y; Langford, SJ; Bond, AM; Zhang, J

Cobalt selenide nanoflake decorated reduced graphene oxide nanocomposite for efficient glucose electro-oxidation in alkaline medium

Cooray, MCD Zhang, X Zhang, Y Langford, SJ Bond, AM Zhang, J

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Publisher:: ROYAL SOC CHEMISTRY
Publication Type:: Journal Article
Citation:: Journal of Materials Chemistry A, 2017, 5, (36), pp. 19289-19296
Issue Date:: 2017-01-01

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Field	Value	Language
dc.contributor.author	Cooray, MCD
dc.contributor.author	Zhang, X
dc.contributor.author	Zhang, Y
dc.contributor.author	Langford, SJ
dc.contributor.author	Bond, AM
dc.contributor.author	Zhang, J
dc.date.accessioned	2022-10-28T06:58:39Z
dc.date.available	2022-10-28T06:58:39Z
dc.date.issued	2017-01-01
dc.identifier.citation	Journal of Materials Chemistry A, 2017, 5, (36), pp. 19289-19296
dc.identifier.issn	2050-7488
dc.identifier.issn	2050-7496
dc.identifier.uri	http://hdl.handle.net/10453/162832
dc.description.abstract	A simple one pot hydrothermal procedure for the synthesis of cobalt selenide (CoSe) decorated reduced graphene oxide (rGO) is reported along with the application of this hybrid material as a new electrocatalyst for glucose oxidation. In alkaline media, glassy carbon electrodes modified with CoSe-rGO composite dispersed in chitosan display excellent reproducibility for the determination of glucose along with a high sensitivity of 480 μA mM-1 cm-2, a linear dynamic range of up to 10 mM, a lower limit of detection of 2.5 μM and an exceptionally high maximum current density of 5.41 ± 0.03 mA cm-2. Bulk electrolysis measurements carried out with the CoSe-rGO/chitosan modified glassy carbon plate revealed that the oxidation of glucose can proceed beyond the formation of gluconolactone with formate detected by 1H-NMR and CO2 detected by gas chromatography; the latter result showing the ability to achieve complete oxidation of glucose. Studies with ascorbic and uric acid showed that their interference with respect to glucose measurement either is negligible or can be overcome.
dc.language	English
dc.publisher	ROYAL SOC CHEMISTRY
dc.relation.ispartof	Journal of Materials Chemistry A
dc.relation.isbasedon	10.1039/c7ta04742h
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0303 Macromolecular and Materials Chemistry, 0912 Materials Engineering, 0915 Interdisciplinary Engineering
dc.title	Cobalt selenide nanoflake decorated reduced graphene oxide nanocomposite for efficient glucose electro-oxidation in alkaline medium
dc.type	Journal Article
utslib.citation.volume	5
utslib.for	0303 Macromolecular and Materials Chemistry
utslib.for	0912 Materials Engineering
utslib.for	0915 Interdisciplinary Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney/Strength - CCET - Centre for Clean Energy Technology
utslib.copyright.status	closed_access	*
dc.date.updated	2022-10-28T06:58:38Z
pubs.issue	36
pubs.publication-status	Published
pubs.volume	5
utslib.citation.issue	36

Abstract:

A simple one pot hydrothermal procedure for the synthesis of cobalt selenide (CoSe) decorated reduced graphene oxide (rGO) is reported along with the application of this hybrid material as a new electrocatalyst for glucose oxidation. In alkaline media, glassy carbon electrodes modified with CoSe-rGO composite dispersed in chitosan display excellent reproducibility for the determination of glucose along with a high sensitivity of 480 μA mM-1 cm-2, a linear dynamic range of up to 10 mM, a lower limit of detection of 2.5 μM and an exceptionally high maximum current density of 5.41 ± 0.03 mA cm-2. Bulk electrolysis measurements carried out with the CoSe-rGO/chitosan modified glassy carbon plate revealed that the oxidation of glucose can proceed beyond the formation of gluconolactone with formate detected by 1H-NMR and CO2 detected by gas chromatography; the latter result showing the ability to achieve complete oxidation of glucose. Studies with ascorbic and uric acid showed that their interference with respect to glucose measurement either is negligible or can be overcome.

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http://hdl.handle.net/10453/162832