Femtomolar detection of thiram <i>via</i> SERS using silver nanocubes as an efficient substrate

Bhavya, M. B.; Prabhu, Boselin; Shenoy, Bhamy Maithry; Bhol, Prangya; Swain, Swarnalata; Saxena, Manav; John, Neena S.; Hegde, Gopalkrishna; Samal, Akshaya K.

doi:10.1039/d0en01049a

Cited by 36 publications

(28 citation statements)

References 57 publications

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“…SERS is a powerful technique with promising applications for the detection of molecules [ 56 ]. Raman scattering in molecules is strongly amplified when they are located in the vicinity of nanostructured substrates [ 57 ], allowing for the ultrasensitive detection of target analytes down to subfemtomolar levels of concentration [ 54 , 58 ]. Other advantages of SERS include chemical specificity, non-destructive, and label-free detection.…”

Section: Reviewmentioning

confidence: 99%

Zinc oxide nanostructures for fluorescence and Raman signal enhancement: a review

Marica¹,

Nekvapil²,

Ştefan³

et al. 2022

Beilstein J. Nanotechnol.

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Since the initial discovery of surface-enhanced Raman scattering (SERS) and surface-enhanced fluorescence (SEF), these techniques have shown huge potential for applications in biomedicine, biotechnology, and optical sensors. Both methods rely on the high electromagnetic fields created at locations on the surface of plasmonic metal nanoparticles, depending on the geometry of the nanoparticles, their surface features, and the specific location of analyte molecules. Lately, ZnO-based nanostructures have been exploited especially as SERS substrates showing high enhancement factors and increased charge transfer effect. Additionally, applications focused on enhancing the fluorescence of analyte molecules as well as on tuning the photoluminescence properties of ZnO nanostructures through combination with metal nanoparticles. This review covers the major recent results of ZnO-based nanostructures used for fluorescence and Raman signal enhancement. The broad range of ZnO and ZnO–metal nanostructures synthesis methods are discussed, highlighting low-cost methods and the recyclability of ZnO-based nanosubstrates. Also, the SERS signal enhancement by ZnO-based nanostructures and the influences of lattice defects on the SERS signal are described. The photoluminescence enhancement of ZnO in the presence of noble metal nanoparticles and the molecular fluorescence enhancement in the presence of ZnO alone and in combination with metal nanoparticles are also reviewed.

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Section: Reviewmentioning

confidence: 99%

Zinc oxide nanostructures for fluorescence and Raman signal enhancement: a review

Marica¹,

Nekvapil²,

Ştefan³

et al. 2022

Beilstein J. Nanotechnol.

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“…TRM was detected at an LOD of 3.8 × 10 –9 M using Ag nanoparticle-decorated bacterial nanocellulose . Our previous study achieved an LOD of 10 fM and 1 nM detection of TRM with Ag nanocubes and Ag nanowires, respectively . Kim et al used 2,2,6,6-tetramethylpiperidine-1-oxy-oxidized cellulose nanofibers with Au NRs and achieved TRM detection of up to 2.4 × 10 –8 M/cm 2 .…”

Section: Introductionmentioning

confidence: 86%

“…8 with Ag nanocubes and Ag nanowires, respectively. 9 Kim et al used 2,2,6,6-tetramethylpiperidine-1-oxy-oxidized cellulose nanofibers with Au NRs and achieved TRM detection of up to 2.4 × 10 −8 M/cm 2 . 10 Yu and co-workers fabricated Au NRcoated capillaries as an SERS substrate for TRM detection and achieved an LOD of 9.98 × 10 −9 M/cm 2 .…”

Section: ■ Introductionmentioning

confidence: 99%

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

Bhavvya

Tripathi

et al. 2022

ACS Sustainable Chem. Eng.

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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 −11 M (10 pM) and an enhancement factor of 2.8 × 10 6 along 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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“…6,[12][13][14] Since its discovery, surface-enhanced Raman spectroscopy (SERS) has drastically advanced the research and development for increasing the practical contribution of Raman spectroscopy to multiple fields, including environmental applications. [15][16][17] In theory, any analyte can be detected by SERS if the molecule is polarizable when it interacts with a SERS substrate under suitable optical excitation, allowing as high specificity of analysis as for detection methods coupled with chromatography. 18,19 So far, detection of only a narrow range of phenolic pollutants via SERS was reported.…”

Section: Introductionmentioning

confidence: 99%

Ultrasensitive and multiplex SERS determination of anthropogenic phenols in oil fuel and environmental samples

Eremina

Kapitanova

Ferree

et al. 2022

Environ. Sci.: Nano

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Femtomolar detection of thiram via SERS using silver nanocubes as an efficient substrate

Abstract: Environmental remediation is the significant factor to maintain balance in the nature. Pesticides are one of the main key factors destroying the nature by polluting in many ways and responsible...

Cited by 36 publications

References 57 publications

Zinc oxide nanostructures for fluorescence and Raman signal enhancement: a review

Zinc oxide nanostructures for fluorescence and Raman signal enhancement: a review

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

Ultrasensitive and multiplex SERS determination of anthropogenic phenols in oil fuel and environmental samples

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