Surface-Enhanced Raman Spectroscopy Using a Silver Nanostar Substrate for Neonicotinoid Pesticides Detection.

Abu Bakar, N; Fronzi, M; Shapter, JG

Surface-Enhanced Raman Spectroscopy Using a Silver Nanostar Substrate for Neonicotinoid Pesticides Detection.

Abu Bakar, N Fronzi, M

Shapter, JG

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Publisher:: MDPI
Publication Type:: Journal Article
Citation:: Sensors (Basel), 2024, 24, (2), pp. 373
Issue Date:: 2024-01-08

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Field	Value	Language
dc.contributor.author	Abu Bakar, N
dc.contributor.author	Fronzi, M https://orcid.org/0000-0001-7855-9216
dc.contributor.author	Shapter, JG
dc.date.accessioned	2024-08-02T02:43:09Z
dc.date.available	2024-01-06
dc.date.available	2024-08-02T02:43:09Z
dc.date.issued	2024-01-08
dc.identifier.citation	Sensors (Basel), 2024, 24, (2), pp. 373
dc.identifier.issn	1424-8220
dc.identifier.issn	1424-8220
dc.identifier.uri	http://hdl.handle.net/10453/179997
dc.description.abstract	Surface-enhanced Raman spectroscopy (SERS) has been introduced to detect pesticides at low concentrations and in complex matrices to help developing countries monitor pesticides to keep their concentrations at safe levels in food and the environment. SERS is a surface-sensitive technique that enhances the Raman signal of molecules absorbed on metal nanostructure surfaces and provides vibrational information for sample identification and quantitation. In this work, we report the use of silver nanostars (AgNs) as SERS-active elements to detect four neonicotinoid pesticides (thiacloprid, imidacloprid, thiamethoxam and nitenpyram). The SERS substrates were prepared with multiple depositions of the nanostars using a self-assembly approach to give a dense coverage of the AgNs on a glass surface, which ultimately increased the availability of the spikes needed for SERS activity. The SERS substrates developed in this work show very high sensitivity and excellent reproducibility. Our research opens an avenue for the development of portable, field-based pesticide sensors, which will be critical for the effective monitoring of these important but potentially dangerous chemicals.
dc.format	Electronic
dc.language	eng
dc.publisher	MDPI
dc.relation	http://purl.org/au-research/grants/arc/DP200101217
dc.relation.ispartof	Sensors (Basel)
dc.relation.isbasedon	10.3390/s24020373
dc.rights	info:eu-repo/semantics/restrictedAccess
dc.subject	0301 Analytical Chemistry, 0502 Environmental Science and Management, 0602 Ecology, 0805 Distributed Computing, 0906 Electrical and Electronic Engineering
dc.subject.classification	Analytical Chemistry
dc.subject.classification	3103 Ecology
dc.subject.classification	4008 Electrical engineering
dc.subject.classification	4009 Electronics, sensors and digital hardware
dc.subject.classification	4104 Environmental management
dc.subject.classification	4606 Distributed computing and systems software
dc.title	Surface-Enhanced Raman Spectroscopy Using a Silver Nanostar Substrate for Neonicotinoid Pesticides Detection.
dc.type	Journal Article
utslib.citation.volume	24
utslib.location.activity	Switzerland
utslib.for	0301 Analytical Chemistry
utslib.for	0502 Environmental Science and Management
utslib.for	0602 Ecology
utslib.for	0805 Distributed Computing
utslib.for	0906 Electrical and Electronic Engineering
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Science
utslib.copyright.status	recently_added	*
dc.date.updated	2024-08-02T02:43:02Z
pubs.issue	2
pubs.publication-status	Published online
pubs.volume	24
utslib.citation.issue	2

Abstract:

Surface-enhanced Raman spectroscopy (SERS) has been introduced to detect pesticides at low concentrations and in complex matrices to help developing countries monitor pesticides to keep their concentrations at safe levels in food and the environment. SERS is a surface-sensitive technique that enhances the Raman signal of molecules absorbed on metal nanostructure surfaces and provides vibrational information for sample identification and quantitation. In this work, we report the use of silver nanostars (AgNs) as SERS-active elements to detect four neonicotinoid pesticides (thiacloprid, imidacloprid, thiamethoxam and nitenpyram). The SERS substrates were prepared with multiple depositions of the nanostars using a self-assembly approach to give a dense coverage of the AgNs on a glass surface, which ultimately increased the availability of the spikes needed for SERS activity. The SERS substrates developed in this work show very high sensitivity and excellent reproducibility. Our research opens an avenue for the development of portable, field-based pesticide sensors, which will be critical for the effective monitoring of these important but potentially dangerous chemicals.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/179997