A Unique Bridging Facet Assembly of Gold Nanorods for the Detection of Thiram through Surface-Enhanced Raman Scattering

M. B., B; B., RP; Tripathi, A; Yadav, S; John, NS; Thapa, R; Altaee, A; Saxena, M; Samal, AK

A Unique Bridging Facet Assembly of Gold Nanorods for the Detection of Thiram through Surface-Enhanced Raman Scattering

M. B., B B., RP Tripathi, A Yadav, S

John, NS Thapa, R Altaee, A

Saxena, M Samal, AK

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Publisher:: AMER CHEMICAL SOC
Publication Type:: Journal Article
Citation:: ACS Sustainable Chemistry and Engineering, 2022, 10, (22), pp. 7330-7340
Issue Date:: 2022-06-06

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Field	Value	Language
dc.contributor.author	M. B., B
dc.contributor.author	B., RP
dc.contributor.author	Tripathi, A
dc.contributor.author	Yadav, S https://orcid.org/0000-0002-2442-8664
dc.contributor.author	John, NS
dc.contributor.author	Thapa, R
dc.contributor.author	Altaee, A https://orcid.org/0000-0001-9764-3974
dc.contributor.author	Saxena, M
dc.contributor.author	Samal, AK
dc.date.accessioned	2023-03-19T23:47:57Z
dc.date.available	2023-03-19T23:47:57Z
dc.date.issued	2022-06-06
dc.identifier.citation	ACS Sustainable Chemistry and Engineering, 2022, 10, (22), pp. 7330-7340
dc.identifier.issn	2168-0485
dc.identifier.issn	2168-0485
dc.identifier.uri	http://hdl.handle.net/10453/167631
dc.description.abstract	Concerns have grown in recent years about the widespread use of the pesticide thiram (TRM), which has been linked to negative effects on local ecosystems. This highlights the critical need for quick and accurate point-of-need pesticide analysis tools for real-time applications. The detection of TRM using gold nanorods (Au NRs) with a limit of detection of 10-11M (10 pM) and an enhancement factor of 2.8 × 106along with 6.2% of signal homogeneity (with respect to the peak at 1378 cm-1) is achieved through surface-enhanced Raman scattering (SERS). The formation of an Au-S bond emphasizes the adsorption of TRM on Au NRs. The addition of Au NRs to TRM of higher and lower concentrations yields a side-by-side assembly (SSA) and a bridging facet assembly (BFA), respectively, and exhibited excellent hotspots for the ultralow detection of TRM. Bridging facets of Au NRs, such as (5 12 0) and (5 0 12) planes, are mainly responsible for the BFA. This kind of interaction is observed for the first time and not reported elsewhere. The detailed facets of Au NRs, namely, side facets, bridging facets, and pyramid facets were demonstrated with the 3D model of Au NRs. The computational studies confirming the SSA and BFA for Au NRs with varying concentrations of TRM are in well agreement with the experimental results. The interaction of Au NRs with TRM is highly sensitive, and the ultralow detection of hazardous TRM through SERS is an ideal technique for environmental protection, real-time applications, and analysis of one-of-a-kind materials.
dc.language	English
dc.publisher	AMER CHEMICAL SOC
dc.relation.ispartof	ACS Sustainable Chemistry and Engineering
dc.relation.isbasedon	10.1021/acssuschemeng.2c01089
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject	0301 Analytical Chemistry, 0502 Environmental Science and Management, 0904 Chemical Engineering
dc.title	A Unique Bridging Facet Assembly of Gold Nanorods for the Detection of Thiram through Surface-Enhanced Raman Scattering
dc.type	Journal Article
utslib.citation.volume	10
utslib.for	0301 Analytical Chemistry
utslib.for	0502 Environmental Science and Management
utslib.for	0904 Chemical 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 Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	open_access	*
utslib.copyright.embargo	2023-06-06T00:00:00+1000Z
dc.date.updated	2023-03-19T23:47:55Z
pubs.issue	22
pubs.publication-status	Published
pubs.volume	10
utslib.citation.issue	22

Abstract:

Concerns have grown in recent years about the widespread use of the pesticide thiram (TRM), which has been linked to negative effects on local ecosystems. This highlights the critical need for quick and accurate point-of-need pesticide analysis tools for real-time applications. The detection of TRM using gold nanorods (Au NRs) with a limit of detection of 10-11M (10 pM) and an enhancement factor of 2.8 × 106along with 6.2% of signal homogeneity (with respect to the peak at 1378 cm-1) is achieved through surface-enhanced Raman scattering (SERS). The formation of an Au-S bond emphasizes the adsorption of TRM on Au NRs. The addition of Au NRs to TRM of higher and lower concentrations yields a side-by-side assembly (SSA) and a bridging facet assembly (BFA), respectively, and exhibited excellent hotspots for the ultralow detection of TRM. Bridging facets of Au NRs, such as (5 12 0) and (5 0 12) planes, are mainly responsible for the BFA. This kind of interaction is observed for the first time and not reported elsewhere. The detailed facets of Au NRs, namely, side facets, bridging facets, and pyramid facets were demonstrated with the 3D model of Au NRs. The computational studies confirming the SSA and BFA for Au NRs with varying concentrations of TRM are in well agreement with the experimental results. The interaction of Au NRs with TRM is highly sensitive, and the ultralow detection of hazardous TRM through SERS is an ideal technique for environmental protection, real-time applications, and analysis of one-of-a-kind materials.

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http://hdl.handle.net/10453/167631