Doped graphene/Cu nanocomposite: A high sensitivity non-enzymatic glucose sensor for food.

Shabnam, L; Faisal, SN; Roy, AK; Haque, E; Minett, AI; Gomes, VG

Doped graphene/Cu nanocomposite: A high sensitivity non-enzymatic glucose sensor for food.

Shabnam, L Faisal, SN Roy, AK Haque, E Minett, AI Gomes, VG

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: Food Chemistry, 2017, 221, pp. 751-759
Issue Date:: 2017-04-15

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Field	Value	Language
dc.contributor.author	Shabnam, L
dc.contributor.author	Faisal, SN
dc.contributor.author	Roy, AK
dc.contributor.author	Haque, E
dc.contributor.author	Minett, AI
dc.contributor.author	Gomes, VG
dc.date.accessioned	2022-09-02T03:07:14Z
dc.date.available	2016-11-21
dc.date.available	2022-09-02T03:07:14Z
dc.date.issued	2017-04-15
dc.identifier.citation	Food Chemistry, 2017, 221, pp. 751-759
dc.identifier.issn	0308-8146
dc.identifier.issn	1873-7072
dc.identifier.uri	http://hdl.handle.net/10453/161211
dc.description.abstract	An amperometric non-enzymatic glucose sensor was developed based on nitrogen-doped graphene with dispersed copper nanoparticles (Cu-NGr). The sensing element was tested in conjunction with a modified glassy carbon electrode for glucose detection. The Cu-NGr composite was prepared by one pot synthesis from a mixture of graphene oxide, copper nitrate and uric acid, followed by thermal annealing at 900°C for 1h. Detailed characterizations showed homogeneous copper nanoparticle dispersion and the presence of significant proportion of graphitic nitrogen. The developed electrode presented high electrocatalytic activity towards glucose through synergetic effect of copper nanoparticles and nitrogen-doped graphene. Amperometric analysis confirmed high glucose sensitivity and ultra-low detection of 10nM glucose over a linear range. The sensor was tested for direct application to detect glucose in food samples for which the sensor displayed high selectivity with excellent reproducibility and recovery in complex food materials.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	Elsevier
dc.relation.ispartof	Food Chemistry
dc.relation.isbasedon	10.1016/j.foodchem.2016.11.107
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject.classification	Food Science
dc.subject.mesh	Biosensing Techniques
dc.subject.mesh	Copper
dc.subject.mesh	Electrochemical Techniques
dc.subject.mesh	Food Analysis
dc.subject.mesh	Glucose
dc.subject.mesh	Graphite
dc.subject.mesh	Nanocomposites
dc.subject.mesh	Biosensing Techniques
dc.subject.mesh	Copper
dc.subject.mesh	Electrochemical Techniques
dc.subject.mesh	Food Analysis
dc.subject.mesh	Glucose
dc.subject.mesh	Graphite
dc.subject.mesh	Nanocomposites
dc.subject.mesh	Graphite
dc.subject.mesh	Copper
dc.subject.mesh	Glucose
dc.subject.mesh	Food Analysis
dc.subject.mesh	Biosensing Techniques
dc.subject.mesh	Nanocomposites
dc.subject.mesh	Electrochemical Techniques
dc.title	Doped graphene/Cu nanocomposite: A high sensitivity non-enzymatic glucose sensor for food.
dc.type	Journal Article
utslib.citation.volume	221
utslib.location.activity	England
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
utslib.copyright.status	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2022-09-02T03:07:13Z
pubs.publication-status	Published
pubs.volume	221

Abstract:

An amperometric non-enzymatic glucose sensor was developed based on nitrogen-doped graphene with dispersed copper nanoparticles (Cu-NGr). The sensing element was tested in conjunction with a modified glassy carbon electrode for glucose detection. The Cu-NGr composite was prepared by one pot synthesis from a mixture of graphene oxide, copper nitrate and uric acid, followed by thermal annealing at 900°C for 1h. Detailed characterizations showed homogeneous copper nanoparticle dispersion and the presence of significant proportion of graphitic nitrogen. The developed electrode presented high electrocatalytic activity towards glucose through synergetic effect of copper nanoparticles and nitrogen-doped graphene. Amperometric analysis confirmed high glucose sensitivity and ultra-low detection of 10nM glucose over a linear range. The sensor was tested for direct application to detect glucose in food samples for which the sensor displayed high selectivity with excellent reproducibility and recovery in complex food materials.

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http://hdl.handle.net/10453/161211