Nonenzymatic multispecies sensor based on Cu-Ni nanoparticle dispersion on doped grapheme

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

Nonenzymatic multispecies sensor based on Cu-Ni nanoparticle dispersion on doped grapheme

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

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: Electrochimica Acta, 2017, 224, pp. 295-305
Issue Date:: 2017-01-10

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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	Minett, AI
dc.contributor.author	Gomes, VG
dc.date.accessioned	2022-09-02T04:35:13Z
dc.date.available	2022-09-02T04:35:13Z
dc.date.issued	2017-01-10
dc.identifier.citation	Electrochimica Acta, 2017, 224, pp. 295-305
dc.identifier.issn	0013-4686
dc.identifier.issn	1873-3859
dc.identifier.uri	http://hdl.handle.net/10453/161213
dc.description.abstract	A non-enzymatic sensing platform was developed for detecting glucose and hydrogen peroxide using nitrogen doped graphene decorated with copper-nickel nanoparticles. The synthesized CuNi-NGr composite presented excellent electrocatalytic interaction with glucose and hydrogen peroxide owing to the synergistic effect of copper, nickel and N-graphene. The enhanced performance of the active materials was due to the presence of nitrogen based active sites with high contents in pyridinic and graphitic N as well as the electrocatalytic activity of distributed copper and nickel nanoparticles on graphene. Amperometric analysis showed that the sensitivity of CuNi-NGr based electrode was 7143 μA.mM−1.cm−2 at low (0.01 μM to 1 mM), and 1030 μA.mM−1.cm−2 at high concentrations (2 to 20 mM) of glucose. The detection responses had corresponding linear ranges as functions of concentration with limit of detection (LOD): 10 nM at S/N = 3. For hydrogen peroxide, the fabricated electrode showed detection sensitivity of 954 μA.mM−1.cm−2 with LOD of 10 μM (S/N = 3) and linear response within 0.01 to 1 mM. On testing, the electrode displayed excellent reproducibility, stability and selectivity for detecting glucose and H2O2 simultaneously in aqueous electrolytes. The sensor was shown to be effective in analyzing glucose and H2O2 present in human urine with excellent recovery.
dc.language	English
dc.publisher	Elsevier
dc.relation.ispartof	Electrochimica Acta
dc.relation.isbasedon	10.1016/j.electacta.2016.12.056
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	02 Physical Sciences, 03 Chemical Sciences, 09 Engineering
dc.subject.classification	Energy
dc.title	Nonenzymatic multispecies sensor based on Cu-Ni nanoparticle dispersion on doped grapheme
dc.type	Journal Article
utslib.citation.volume	224
utslib.for	02 Physical Sciences
utslib.for	03 Chemical Sciences
utslib.for	09 Engineering
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	2022-09-02T04:35:12Z
pubs.publication-status	Published
pubs.volume	224

Abstract:

A non-enzymatic sensing platform was developed for detecting glucose and hydrogen peroxide using nitrogen doped graphene decorated with copper-nickel nanoparticles. The synthesized CuNi-NGr composite presented excellent electrocatalytic interaction with glucose and hydrogen peroxide owing to the synergistic effect of copper, nickel and N-graphene. The enhanced performance of the active materials was due to the presence of nitrogen based active sites with high contents in pyridinic and graphitic N as well as the electrocatalytic activity of distributed copper and nickel nanoparticles on graphene. Amperometric analysis showed that the sensitivity of CuNi-NGr based electrode was 7143 μA.mM−1.cm−2 at low (0.01 μM to 1 mM), and 1030 μA.mM−1.cm−2 at high concentrations (2 to 20 mM) of glucose. The detection responses had corresponding linear ranges as functions of concentration with limit of detection (LOD): 10 nM at S/N = 3. For hydrogen peroxide, the fabricated electrode showed detection sensitivity of 954 μA.mM−1.cm−2 with LOD of 10 μM (S/N = 3) and linear response within 0.01 to 1 mM. On testing, the electrode displayed excellent reproducibility, stability and selectivity for detecting glucose and H2O2 simultaneously in aqueous electrolytes. The sensor was shown to be effective in analyzing glucose and H2O2 present in human urine with excellent recovery.

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http://hdl.handle.net/10453/161213