scholarly journals Detection of a Sudan dye at low concentrations by surface-enhanced Raman spectroscopy using silver nanoparticles

2019 ◽  
Vol 29 (4) ◽  
pp. 521
Author(s):  
Tran Cao Dao ◽  
Truc Quynh Ngan Luong ◽  
Tuan Anh Cao ◽  
Ngoc Minh Kieu
Keyword(s):  
Raman Spectroscopy ◽  
Silver Nanoparticles ◽  
Good Method ◽  
Surface Enhanced Raman Spectroscopy ◽  
Sers Substrate ◽  
Sudan Dyes ◽  
Sudan I ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Sers Detection

Sudan dyes are red colorants banned from use for food due to their toxic properties. However, because of the cheapness, they are sometimes adulterated into food illegally. Currently surface-enhanced Raman spectroscopy (SERS) is emerging as a good method to detect residues (including trace amounts) of Sudan dyes in food. In this report we present the SERS detection of Sudan I (a type of Sudan dyes) to concentrations as low as 1 ppb, using a very simple SERS substrate, which is made from silver nanoparticles chemically deposited on silicon surface.

Pollutant capturing SERS substrate: porous boron nitride microfibers with uniform silver nanoparticle decoration

Nanoscale ◽  
2015 ◽  
Vol 7 (45) ◽  
pp. 18992-18997 ◽  
Author(s):  
Pengcheng Dai ◽  
Yanming Xue ◽  
Xuebin Wang ◽  
Qunhong Weng ◽  
Chao Zhang ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Silver Nanoparticles ◽  
Boron Nitride ◽  
Silver Nanoparticle ◽  
Surface Enhanced Raman Spectroscopy ◽  
Sers Substrate ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

We designed a novel pollutant capturing surface enhanced Raman spectroscopy (SERS) substrate based on boron nitride microfibers uniformly decorated with silver nanoparticles.

Droplet based microfluidics: spectroscopic characterization of levofloxacin and its SERS detection

2015 ◽  
Vol 17 (33) ◽  
pp. 21236-21242 ◽  
Author(s):  
I. J. Hidi ◽  
M. Jahn ◽  
K. Weber ◽  
D. Cialla-May ◽  
J. Popp
Keyword(s):  
Aqueous Solution ◽  
Raman Spectroscopy ◽  
Silver Nanoparticles ◽  
Spectroscopic Characterization ◽  
Surface Enhanced Raman Spectroscopy ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Sers Detection

The determination of the absorption behavior of levofloxacin (levaquin) on the surface of silver nanoparticles and its determination in aqueous solution by droplet based microfluidics combined with surface enhanced Raman spectroscopy.

Multivariate Analysis Aided Surface-Enhanced Raman Spectroscopy (MVA-SERS) Multiplex Quantitative Detection of Trace Fentanyl in Illicit Drug Mixtures Using a Handheld Raman Spectrometer

2021 ◽  
pp. 000370282110329
Author(s):  
Ling Wang ◽  
Mario O. Vendrell-Dones ◽  
Chiara Deriu ◽  
Sevde Doğruer ◽  
Peter de B. Harrington ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Principal Component ◽  
Surface Enhanced Raman Spectroscopy ◽  
Quantitative Detection ◽  
Least Squares Regression ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Sers Detection ◽  
Current Screening

Recently there has been upsurge in reports that illicit seizures of cocaine and heroin have been adulterated with fentanyl. Surface-enhanced Raman spectroscopy (SERS) provides a useful alternative to current screening procedures that permits detection of trace levels of fentanyl in mixtures. Samples are solubilized and allowed to interact with aggregated colloidal nanostars to produce a rapid and sensitive assay. In this study, we present the quantitative determination of fentanyl in heroin and cocaine using SERS, using a point-and-shoot handheld Raman system. Our protocol is optimized to detect pure fentanyl down to 0.20 ± 0.06 ng/mL and can also distinguish pure cocaine and heroin at ng/mL levels. Multiplex analysis of mixtures is enabled by combining SERS detection with principal component analysis and super partial least squares regression discriminate analysis (SPLS-DA), which allow for the determination of fentanyl as low as 0.05% in simulated seized heroin and 0.10% in simulated seized cocaine samples.

Silver oxide model surface improves computational simulation of surface-enhanced Raman spectroscopy on silver nanoparticles

2021 ◽  
Author(s):  
Scott G. Harroun ◽  
Yaoting Zhang ◽  
Tzu-Heng Chen ◽  
Huan-Tsung Chang ◽  
Alexis Vallée-Bélisle
Keyword(s):  
Raman Spectroscopy ◽  
Silver Nanoparticles ◽  
Silver Oxide ◽  
Accurate Result ◽  
Computational Simulation ◽  
Surface Enhanced Raman Spectroscopy ◽  
Model Surface ◽  
Surface Enhanced ◽  
Model Surfaces ◽  
Surface Enhanced Raman

For simulation of SERS on silver nanoparticles, Ag2O can provide a more accurate result than standard model surfaces such as Ag+, Ag, Ag4+ and Ag4.

scholarly journals Reusable Surface-Enhanced Raman Spectroscopy Substrates Made of Silicon Nanowire Array Coated with Silver Nanoparticles Fabricated by Metal-Assisted Chemical Etching and Photonic Reduction

Nanomaterials ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1531 ◽  
Author(s):  
Shi Bai ◽  
Yongjun Du ◽  
Chunyan Wang ◽  
Jian Wu ◽  
Koji Sugioka
Keyword(s):  
Silver Nanoparticles ◽  
Chemical Etching ◽  
Silicon Nanowire ◽  
Nanowire Array ◽  
Surface Enhanced Raman Spectroscopy ◽  
Sers Substrate ◽  
Silicon Nanowire Array ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Metal Assisted Chemical Etching

Surface-enhanced Raman spectroscopy (SERS) has advanced over the last four decades and has become an attractive tool for highly sensitive analysis in fields such as medicine and environmental monitoring. Recently, there has been an urgent demand for reusable and long-lived SERS substrates as a means of reducing the costs associated with this technique To this end, we fabricated a SERS substrate comprising a silicon nanowire array coated with silver nanoparticles, using metal-assisted chemical etching followed by photonic reduction. The morphology and growth mechanism of the SERS substrate were carefully examined and the performance of the fabricated SERS substrate was tested using rhodamine 6G and dopamine hydrochloride. The data show that this new substrate provides an enhancement factor of nearly 1 × 108. This work demonstrates that a silicon nanowire array coated with silver nanoparticles is sensitive and sufficiently robust to allow repeated reuse. These results suggest that this newly developed technique could allow SERS to be used in many commercial applications.

SERS Tags Derived from Silver Nanoparticles and Aryl Diazonium Salts for Cell Raman Imaging

Nanoscale ◽  
2022 ◽  
Author(s):  
Da Li ◽  
Philippe Nizard ◽  
Delphine Onidas ◽  
Aazdine Lamouri ◽  
Jean Pinson ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Silver Nanoparticles ◽  
Surface Functionalization ◽  
Surface Enhanced Raman Spectroscopy ◽  
Raman Imaging ◽  
Diazonium Salts ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Silver Nps ◽  
Sers Tags

The surface functionalization of silver nanoparticles (NPs) by Raman reporters has stimulated a wide interest in recent years for the design of Surface-Enhanced Raman Spectroscopy (SERS) labels. However, silver NPs...

Graphene/silver nanoparticles‐based surface‐enhanced Raman spectroscopy detection platforms: Application in the study of DNA molecules at low pH

2019 ◽  
Vol 50 (12) ◽  
pp. 1849-1860
Author(s):  
Cristina M. Muntean ◽  
Nicoleta E. Dina ◽  
Maria Coroş ◽  
Nicoleta Toşa ◽  
Alexandru I. Turza ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Silver Nanoparticles ◽  
Surface Enhanced Raman Spectroscopy ◽  
Low Ph ◽  
Dna Molecules ◽  
Surface Enhanced ◽  
Surface Enhanced Raman
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