Surface-enhanced Raman spectroscopy combined with gold nanorods for the simultaneous quantification of nitramine energetic materials

Güven, Burcu; Eryılmaz, Merve; Üzer, Ayşem; Boyaci, İsmail Hakkı; Tamer, Uğur; Apak, Reşat

doi:10.1039/c7ra05844f

Cited by 16 publications

(7 citation statements)

References 77 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Different analytical techniques have been reported for detection of trace explosives such as gas and liquid chromatography coupled with mass spectrometry, ,− high performance liquid chromatography (HPLC), , spectrophotometry, , reflectance spectroscopy, and Raman spectroscopy; on the other hand, many of the sophisticated techniques are relatively expensive, time-consuming, and require qualified personnel. As an alternative to these methods, electrochemical methods are preferable because of their high sensitivity and selectivity, fast response, low cost, easy operation, and portability .…”

mentioning

confidence: 99%

Electrochemical Determination of TNT, DNT, RDX, and HMX with Gold Nanoparticles/Poly(Carbazole-Aniline) Film–Modified Glassy Carbon Sensor Electrodes Imprinted for Molecular Recognition of Nitroaromatics and Nitramines

Sağlam

Üzer

Erçağ³

et al. 2018

Anal. Chem.

Self Cite

View full text Add to dashboard Cite

Since nitroaromatic- and nitramine-type energetic materials, mostly arising from military activities, are persistent pollutants in soil and groundwater, on-site sensing of these hazardous chemicals has gained importance. A novel electrochemical sensor was designed for detecting nitroaromatic- and nitramine-type energetic materials, relying on gold nanoparticles (Au), modified glassy carbon (GC) electrode coated with nitro-energetic memory-poly(carbazole-aniline) copolymer (Cz- co-ANI) film (e.g., TNT memory-GC/P(Cz- co-ANI)-Au modified electrode). Current was recorded against concentration to build the calibration curves that were found to be linear within the range of 100-1000 μg L for 2,4,6-trinitrotoluene (TNT) and 2,4-dinitrotoluene (DNT): 50-1000 μg L for 1,3,5-trinitro-1,3,5-triazacyclohexane (RDX) and octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX). The corresponding limits of detection were 25 μg L for TNT, 30 μg L for DNT, and 10 μg L for both RDX and HMX, using nitro-energetic memory-GC/P(Cz- co-ANI)-Au electrodes. These electrodes were used separately, and specific determinations were made in various mixtures of nitro-energetic materials. The developed method could be efficiently used in electroanalyzing nitroaromatics and nitramines in military explosives (i.e., comp B, octol, and comp A5). The sensor electrodes were specific for the tested nitro-energetic compounds and did not respond to paracetamol-caffeine-based analgesic drug, acetylsalicylic acid (aspirin), sweetener, and sugar that can be used as camouflage materials in passenger belongings. The developed method was statistically validated against the standard LC-MS reference method in contaminated clay soil samples containing TNT and RDX explosives.

show abstract

mentioning

confidence: 99%

Electrochemical Determination of TNT, DNT, RDX, and HMX with Gold Nanoparticles/Poly(Carbazole-Aniline) Film–Modified Glassy Carbon Sensor Electrodes Imprinted for Molecular Recognition of Nitroaromatics and Nitramines

Sağlam

Üzer

Erçağ³

et al. 2018

Anal. Chem.

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, the activity of bimetallic NPs is dependent on the molar ratio of Ag to Au, since a higher Au mole fraction means a greater intensity peak on the SERS spectra [ 60 ]. Guven et al [ 61 ] presented a SERS method for the quantitative determination of nitrites (NO 2 − ) from the alkaline hydrolysis of explosives. For this purpose, 4-aminothiophenol (4-ATP) modified Au-NRs, doped with Ag-NPs, were used as the substrate that increased the signal intensity.…”

Section: Assemblies Of Noble Anisotropic Nanoparticlesmentioning

confidence: 99%

Recent Advances in Metallic Nanoparticle Assemblies for Surface-Enhanced Spectroscopy

Tim

Błaszkiewicz

Kotkowiak

2021

IJMS

View full text Add to dashboard Cite

Robust and versatile strategies for the development of functional nanostructured materials often focus on assemblies of metallic nanoparticles. Research interest in such assemblies arises due to their potential applications in the fields of photonics and sensing. Metallic nanoparticles have received considerable recent attention due to their connection to the widely studied phenomenon of localized surface plasmon resonance. For instance, plasmonic hot spots can be observed within their assemblies. A useful form of spectroscopy is based on surface-enhanced Raman scattering (SERS). This phenomenon is a commonly used in sensing techniques, and it works using the principle that scattered inelastic light can be greatly enhanced at a surface. However, further research is required to enable improvements to the SERS techniques. For example, one question that remains open is how to design uniform, highly reproducible, and efficiently enhancing substrates of metallic nanoparticles with high structural precision. In this review, a general overview on nanoparticle functionalization and the impact on nanoparticle assembly is provided, alongside an examination of their applications in surface-enhanced Raman spectroscopy.

show abstract

“…The SERS response of bacteria on a substrate is however not proportional to the bacterial concentration as it is the case in solution containing metal nanoparticles as SERS markers. [56] Therefore no quantitative information can directly be obtained. However, it is possible to recover a quantification capability, at least in a given concentration range, by combining SERS and mapping techniques, at the expense of a longer time of analysis [57] and properly modelling the trapping of bacteria on the mixed PEGantibody surface.…”

Section: Specific Sensing Of E Coli In Biochip Architecturementioning

confidence: 99%

Rapid and sensitive identification of uropathogenic Escherichia coli using a surface-enhanced-Raman-scattering-based biochip

Andrei

Moraillon

Lau

et al. 2020

Talanta

View full text Add to dashboard Cite

Rapid, selective and sensitive sensing of bacteria remains challenging. We report on a highly sensitive and reproducible surface-enhanced Raman spectroscopy (SERS)-based sensing approach for the detection of uropathogenic Escherichia coli (E. coli) bacteria in urine. The assay is based on the specific capture of the bacteria followed by interaction with cetyltrimethylammonium bromide (CTAB)-stabilised gold nanorods (Au NRS) as SERS markers. High sensitivity up to 10 CFU mL-1 is achieved by optimizing the capture interface based on hydrogenated amorphous silicon a-Si:H thin films. The integration of CH 3 O-PEG 750 onto a-Si:H gives the sensing interface an efficient anti-fouling character, while covalent linkage of antibodies directed against the major type-1 fimbrial pilin FimA of the human pathogen E. coli results in the specific trapping of fimbriated E. coli onto the SERS substrate and their spectral fingerprint identification.

show abstract

Surface-enhanced Raman spectroscopy combined with gold nanorods for the simultaneous quantification of nitramine energetic materials

Abstract: A nanosensing method based on surface-enhanced Raman spectroscopy was proposed for simultaneous quantification of nitramine compounds, HMX and RDX.

Cited by 16 publications

References 77 publications

Electrochemical Determination of TNT, DNT, RDX, and HMX with Gold Nanoparticles/Poly(Carbazole-Aniline) Film–Modified Glassy Carbon Sensor Electrodes Imprinted for Molecular Recognition of Nitroaromatics and Nitramines

Electrochemical Determination of TNT, DNT, RDX, and HMX with Gold Nanoparticles/Poly(Carbazole-Aniline) Film–Modified Glassy Carbon Sensor Electrodes Imprinted for Molecular Recognition of Nitroaromatics and Nitramines

Recent Advances in Metallic Nanoparticle Assemblies for Surface-Enhanced Spectroscopy

Rapid and sensitive identification of uropathogenic Escherichia coli using a surface-enhanced-Raman-scattering-based biochip

Contact Info

Product

Resources

About