Synthesis of silver nanowires and their utilization as a SERS substrate for the detection of lidocaine

Uslu, Okan; Ay, K. O.; Dıkmen, Gökhan

doi:10.1016/j.molliq.2022.120618

Cited by 3 publications

(3 citation statements)

References 38 publications

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“…Nanomaterials are often used as substrates for Raman detection because of their simplicity, rapidity and pollution-free synthesis [17][18]. Scienti c research has found that some metal nanomaterials, such as Au and Ag, and nano-oxides, ZnO, TiO 2 , Ni 2 O and CeO 2 can make the signal of surface enhancing Raman amplify [19][20][21][22][23]. When the nanomaterials with rough surface were used as substrate, hot spot formed, and the strong signal can be obtained.…”

Section: Introductionmentioning

confidence: 99%

Construction of Fe 3 O 4 /PDA/Ag Nanoparticles and Coupling with SERS for Detection of Pesticide Residue

Song,

Wu,

Tian

2024

Preprint

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Carbendazim and thiophanate-methyl are highly toxic persistent organic pollutant. Prolonged exposure to them may bring a wide variety of disease. For this, a facile and high sensitive approach (surface-enhanced Raman scattering: SERS) with nanocomposite (Fe3O4/PDA/Ag) as substrates was developed for detection of carbendazim and thiophanate-methyl. The core of Fe3O4 nanoparticles (NPs) were synthesized by coprecipitation method, and it was coated with polydopamine (PDA). Ag NPs was obtained by chemical reduction-oxidation. The three-layer structure of magnetic composite nanomaterial with noble metal, namely Fe3O4/PDA/Ag was fabricated via the interaction between Ag and the amino groups of PDA. The prepared Fe3O4/PDA/Ag composites was characterized by XRD, UV-VIS, IR and VSM. The Fe3O4/PDA/Ag as SERS substrates was employed to detect carbendazim and thiophanate-methyl by Raman technology. It was demonstrated that the number of Raman peaks were obvious increased, and intensity for carbendazim and thiophanate-methyl were significantly enhanced due to the substrate of Fe3O4/GO/Ag. A new substrate for SERS was designed with the detection signal significant amplification. New approach for high sensitive, rapid and facile detection of pesticide residues was developed in the study.

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Section: Introductionmentioning

confidence: 99%

Construction of Fe 3 O 4 /PDA/Ag Nanoparticles and Coupling with SERS for Detection of Pesticide Residue

Song,

Wu,

Tian

2024

Preprint

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“…Having a non-homogeneous substrate leads to large variations in the EF, thereby decreasing the average performance of the SERS substrate. 20 In most cases, the spectra obtained will be dominated by species present in the high EF areas of the substrate and information regarding other species of interest located in lower EF areas of the substrate will be lost. Approaches for producing SERS substrates largely rely on lithographic techniques that can be employed for the fabrication of highly stable, reproducible, and periodic SERS substrates.…”

Section: Introductionmentioning

confidence: 99%

“…However, developing SERS substrates with a high, reproducible, and homogeneous EF is still a significant challenge. Having a non-homogeneous substrate leads to large variations in the EF, thereby decreasing the average performance of the SERS substrate . In most cases, the spectra obtained will be dominated by species present in the high EF areas of the substrate and information regarding other species of interest located in lower EF areas of the substrate will be lost.…”

Section: Introductionmentioning

confidence: 99%

Low-Variance Surface-Enhanced Raman Spectroscopy Using Confined Gold Nanoparticles over Silicon Nanocones

Jonker

Srivastava

Lafuente

et al. 2023

ACS Appl. Nano Mater.

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Surface-enhanced Raman spectroscopy (SERS) substrates are of utmost interest in the analyte detection of biological and chemical diagnostics. This is primarily due to the ability of SERS to sensitively measure analytes present in localized hot spots of the SERS nanostructures. In this work, we present the formation of 67 ± 6 nm diameter gold nanoparticles supported by vertically aligned shell-insulated silicon nanocones for ultralow variance SERS. The nanoparticles are obtained through discrete rotation glancing angle deposition of gold in an e-beam evaporating system. The morphology is assessed through focused ion beam tomography, energy-dispersive X-ray spectroscopy, and scanning electron microscopy. The optical properties are discussed and evaluated through reflectance measurements and finite-difference time-domain simulations. Lastly, the SERS activity is measured by benzenethiol functionalization and subsequent Raman spectroscopy in the surface scanning mode. We report a homogeneous analytical enhancement factor of 2.2 ± 0.1 × 10 7 (99% confidence interval for N = 400 grid spots) and made a comparison to other lithographically derived assemblies used in SERS. The strikingly low variance (4%) of our substrates facilitates its use for many potential SERS applications.

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SERS-based immunoassay for amplified detection of food hazards: Recent advances and future trends

Shan,

Shi,

et al. 2023

Trends in Food Science & Technology

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Synthesis of silver nanowires and their utilization as a SERS substrate for the detection of lidocaine

Cited by 3 publications

References 38 publications

Construction of Fe 3 O 4 /PDA/Ag Nanoparticles and Coupling with SERS for Detection of Pesticide Residue

Construction of Fe 3 O 4 /PDA/Ag Nanoparticles and Coupling with SERS for Detection of Pesticide Residue

Low-Variance Surface-Enhanced Raman Spectroscopy Using Confined Gold Nanoparticles over Silicon Nanocones

SERS-based immunoassay for amplified detection of food hazards: Recent advances and future trends

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