In situ decoration of plasmonic silver nanoparticles on poly(vinylidene fluoride) membrane for versatile SERS detection

2019 ◽  
Vol 43 (18) ◽  
pp. 6965-6972
Author(s):  
Ruiyu Liu ◽  
Jia Tang ◽  
Hui Yang ◽  
Wei Jin ◽  
Mei Liu ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Vinylidene Fluoride ◽  
Pvdf Membrane ◽  
Surface Enhanced ◽  
Poly Vinylidene Fluoride ◽  
New Strategy ◽  
Surface Enhanced Raman ◽  
Sers Detection ◽  
Enhanced Raman Scattering

A new strategy based on a polymer sol was proposed for the in situ fabrication of a poly(vinylidene fluoride) (PVDF) membrane decorated with silver nanoparticles (AgNPs) for application in surface enhanced Raman scattering (SERS).

A versatile platform of catechol-functionalized polysiloxanes for hybrid nanoassembly and in situ surface enhanced Raman scattering applications

2016 ◽  
Vol 4 (38) ◽  
pp. 8903-8910 ◽  
Author(s):  
Yida Liu ◽  
Ali Demirci ◽  
Huie Zhu ◽  
Jinguang Cai ◽  
Shunsuke Yamamoto ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Raman Scattering ◽  
Surface Enhanced Raman Scattering ◽  
Adhesive Property ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Good Adhesive ◽  
Enhanced Raman Scattering

Catechol-functionalized polysiloxanes show a versatile coating on numerous substrates and a good adhesive property with silver nanoparticles, which make the substrate a promising SERS sensor.

scholarly journals Flexible SERS substrate of silver nanoparticles on cotton swabs for rapid in-situ detection of melamine

2022 ◽  
Author(s):  
Wen-Chien Huang ◽  
Ken-Fa Cheng ◽  
Jing-Yuan Shyu
Keyword(s):  
Silver Nanoparticles ◽  
Food Safety ◽  
Raman Scattering ◽  
Sers Substrate ◽  
Fast Method ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
In Situ Detection

It is important to be able to detect melamine via a sensitive and fast method in the field of food safety. Surface-enhanced Raman scattering (SERS) has attracted much attention due...

Tunable nanopillar array on a quartz-fiber tip for surface enhanced Raman scattering (SERS) detection

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Evgeny Melekhov ◽  
Tatjana Penn ◽  
Tobias Weidauer ◽  
Valerius Abb ◽  
Martin Kammler ◽  
...  
Keyword(s):  
Diclofenac Sodium ◽  
Three Dimensional ◽  
Label Free ◽  
Step Method ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Sers Detection ◽  
Enhanced Raman Scattering ◽  
Optical Quartz Glass

Abstract In this work, a simple two-step method to create tunable self-assembled three-dimensional nanostructure array-like nanoantennas directly on the tip of an optical quartz glass fiber is described. The structures are prepared by using dry etching of the fiber tip. For the etching process, gold nanoparticles fabricated by thermal dewetting technique were used as template. The structures are applied as sensors for label-free analysis of organic substances in ppb range, such as drug residues in liquid solutions. The measurements are carried out by a portable Raman device with an exchangeable sensor head utilizing the SERS-effect. This method allows in situ applications. In order to characterize the SERS cells, para-thiocresol and diclofenac sodium are used as model substances. For optimization of the substrate performance, different thicknesses of the dewetting-layer (6, 9, 12 nm), different etching times for formation of the pillars (6, 8, 10 and 12 min), and different thicknesses of SERS-metallization (25, 50, 75 nm) of gold and silver are compared. In order to show the applicability of the structure on the tip of a fiber, measurements from the upper side and from the underside of the substrate on quartz plates are compared. Reproducible SERS enhancement factors up to 10 7 {10^{7}} were achieved.

Electrochemical SERS Detection of Chlorinated Hydrocarbons in Aqueous Solutions

1994 ◽  
Vol 48 (10) ◽  
pp. 1265-1271 ◽  
Author(s):  
John M. E. Storey ◽  
Robert D. Shelton ◽  
Tye E. Barber ◽  
Eric A. Wachter
Keyword(s):  
Chlorinated Hydrocarbons ◽  
Copper Electrode ◽  
Specific Class ◽  
Reaction Products ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Sers Detection ◽  
Enhanced Raman Scattering

An in situ method for the determination of trichloroethylene (TCE), perchloroethylene (PCE), chloroform (CHCl3), and carbon tetrachloride (CCl4) in aqueous solution is described. The method is based on ESERS—a combination of electrochemical methods and surface-enhanced Raman scattering (SERS). Electrochemistry prepares the surface of a copper electrode for SERS and concentrates the analyte on the surface. The formation of common reaction products for chloroalkanes and for chloroalkenes prevents unequivocal differentiation within a specific class of chlorinated hydrocarbons. However, spectroscopic selectivity between the chloroalkane and chloroalkene classes is excellent, while differences in electrochemical response provide a secondary means for differentiating analyte class. Sensitivity was found to be: <1 ppm for TCE; 15 ppm for PCE; 15 ppm for CHCl3; and 10 ppm for CCl4. Application of the method to groundwater contaminated with TCE has been demonstrated. In combination with a fiber-optic waveguide, the ESERS technique offers potential for remote detection of chlorinated hydrocarbons in groundwater and remediation process streams.

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