A simple fabrication of plasmonic surface-enhanced Raman scattering (SERS) substrate for pesticide analysis via the immobilization of gold nanoparticles on UF membrane

2017 ◽  
Vol 407 ◽  
pp. 440-446 ◽  
Author(s):  
Jangho Hong ◽  
Ayato Kawashima ◽  
Noriaki Hamada
Keyword(s):  
Gold Nanoparticles ◽  
Raman Scattering ◽  
Surface Enhanced Raman Scattering ◽  
Sers Substrate ◽  
Pesticide Analysis ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

scholarly journals Gold nanoparticles fabricated by the electrical wire explosion technique, deposited on a porous silicon as an active substrate for surface-enhanced Raman scattering (SERS)

2021 ◽  
Vol 2114 (1) ◽  
pp. 012094
Author(s):  
Ansam F Jaleel ◽  
Ahmed S Wasfi
Keyword(s):  
Gold Nanoparticles ◽  
Raman Scattering ◽  
Surface Enhanced Raman Scattering ◽  
Sers Substrate ◽  
X Ray Diffraction ◽  
Wire Explosion ◽  
X Ray ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

Abstract This study aims to improve the surface-enhanced Raman scattering (SERS) using gold nanoparticles prepared by the wire explosion technique and deposited on an etched silicon substrate. This spectral technique is highly dependent upon physicochemical properties of the substrate material, to detect very low concentrations of the toxic materials. The morphological and structural features of the prepared gold nanoparticles (AuNPs) have been investigated by the field emission scanning electron microscopy (FE-SEM) and X-ray diffraction (XRD). The FE-SEM images illustrated that the deposited AuNPs have a non-uniform spherical shape with a rough surface and there were nanogaps between them acting as hotspots at the surface. While the X-ray diffraction pattern indicated the existence of the (111) plane which confirmed the crystalline nature of the AuNPs. Rh6G dye was used as a probe material to examine the performance of these nanoparticles as a SERS substrate. The Raman scattering spectrum of the rhodamine RH6G dye enhanced greatly due to the existence of these nanoparticles, where the enhancement factor (EF) was 2.23×106 when using a deposited AuNPs of concentration 13.46 ppm which is equal to 3×10-5 M, and a reasonable detection limit for a low dye concentration of 10-14M.

Surface-enhanced Raman scattering substrate based on cysteamine-modified gold nanoparticle aggregation for highly sensitive pentachlorophenol detection

RSC Advances ◽  
2016 ◽  
Vol 6 (88) ◽  
pp. 85285-85292 ◽  
Author(s):  
Qian Ma ◽  
Hongyan Zhang ◽  
Weimin Liu ◽  
Jiechao Ge ◽  
Jiasheng Wu ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Raman Scattering ◽  
Surface Enhanced Raman Scattering ◽  
Sers Substrate ◽  
Nanoparticle Aggregation ◽  
Gold Nanoparticle Aggregation ◽  
Highly Sensitive ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

A new surface-enhanced Raman scattering (SERS) substrate based on cysteamine-modified gold nanoparticles (AuNPs) on the glass surface has been developed for the monitoring of pentachlorophenol (PCP) in water samples.

scholarly journals Immobilization and 3D Hot-Junction Formation of Gold Nanoparticles on Two-Dimensional Silicate Nanoplatelets as Substrates for High-Efficiency Surface-Enhanced Raman Scattering Detection

Nanomaterials ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 324 ◽  
Author(s):  
Yen-Chen Lee ◽  
Chih-Wei Chiu
Keyword(s):  
Gold Nanoparticles ◽  
Raman Scattering ◽  
High Efficiency ◽  
Surface Enhanced Raman Scattering ◽  
Detection Sensitivity ◽  
Sers Substrate ◽  
Two Dimensional ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

We synthesize a high-efficiency substrate for surface-enhanced Raman scattering (SERS) measurements, which is composed of gold nanoparticles (AuNPs) on two-dimensional silicate nanoplatelets acting as an inorganic stabilizer, via the in-situ reduction of hydrogen tetrachloroaurate (III) by sodium citrate in an aqueous solution. Silicate platelets of ~1-nm thickness and various sizes, viz. laponite (50 nm), sodium montmorillonite (Na+–MMT, 100 nm), and mica (500 nm), are used to stabilize the AuNPs (Au@silicate), which are formed with uniform diameters ranging between 25 and 30 nm as confirmed by transmission electron microscopy (TEM). In particular, the laponite SERS substrate can be used in biological, environmental, and food safety applications to measure small molecules such as DNA (adenine molecule), dye (Direct Blue), and herbicide (paraquat) as it shows high detection sensitivity with a detection limit of 10−9 M for adenine detection. These highly sensitive SERS substrates, with their three-dimensional hot-junctions formed with AuNPs and two-dimensional silicate nanoplatelets, allow the highly efficient detection of organic molecules. Therefore, these Au@silicate nanohybrid substrates have great potential in biosensor technology because of their environmentally-friendly and simple fabrication process, high efficiency, and the possibility of rapid detection.

Hydrophilic-hydrophobic graphitic carbon nitride@silver hybrid substrate for recyclable surface-enhanced Raman scattering-based detection without coffee ring effect

The Analyst ◽  
2021 ◽  
Author(s):  
Yanjia Jiang ◽  
Huimin Sun ◽  
Chenjie Gu ◽  
Yongling Zhang ◽  
Tao Jiang
Keyword(s):  
Raman Scattering ◽  
Carbon Nitride ◽  
Surface Enhanced Raman Scattering ◽  
Graphitic Carbon Nitride ◽  
Sers Substrate ◽  
Organic P ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Coffee Ring Effect

There is a growing interest in developing a multifunctional surface-enhanced Raman scattering (SERS) substrate to deal with the challenge of the pretreatment-free detection and degradation of hazardous molecules in organic...

SERS-active metal–organic frameworks with embedded gold nanoparticles

The Analyst ◽  
2017 ◽  
Vol 142 (14) ◽  
pp. 2640-2647 ◽  
Author(s):  
Xiaolin Cao ◽  
Sihui Hong ◽  
Zejun Jiang ◽  
Yongxin She ◽  
Shanshan Wang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Raman Scattering ◽  
Metal Organic Frameworks ◽  
Surface Enhanced Raman Scattering ◽  
Active Metal ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Metal Organic ◽  
Enhanced Raman Scattering

Surface-enhanced Raman scattering (SERS) has been widely used in the detection of targets and strongly depends on the interaction and the distance between the targets and nanoparticles.

scholarly journals Development of Effectual Substrates for SERS by Nanostructures-on flexible surfaces

2021 ◽  
Vol 2114 (1) ◽  
pp. 012084
Author(s):  
Hammad R. Humud ◽  
Fatimah Jumaah Moaen
Keyword(s):  
Raman Scattering ◽  
Ag Nanoparticles ◽  
Surface Enhanced Raman Scattering ◽  
Wave Number ◽  
Plasmonic Nanostructures ◽  
Sers Substrate ◽  
Two Dimensional ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

Abstract The current study examines recent advancements in surface-enhanced Raman scattering (SERS), a technique that employs flexible surfaces as an active substrate, this surfaces consist from two-dimensional thermo-plasmonic grating. With 53 nm Au layer (was deposited on the 2D grating structure of the PDMS by the PVD method). The explosive wire technique was used to preparing Ag nanoparticles that were used for the purpose of SERS. The effect of the plasmonic nanostructures on the absorption spectra and Surface - Enhanced Raman Scattering (SERS) activities was examined. Rhodamine 6G dye was used as a probe molecule. X-Ray diffraction (XRD) was used to examine the structural characteristics of the nanoparticles. The morphology was assessed using Field Emission Scanning Electron Microscopy(FESEM). A twin beam UV-Vis Spectrophotometer was used to measure the absorption of the combined Rh6G dye (concentration 1×10“–6M) with the nanostructures. a Sunshine Raman microscope system and a 50mm objective lens, used for investigating the Raman spectra of the Rh6G combined with nanostructures. The results showed that the enhancement factor (EF) for SERS of R6G (1×M) reached to (2.2×10 3) When using Ag nanoparticles and (0.08 × 103) when R6G deposited directly on the flexible substrates without nanostructures at the wave number (1650 cm−1), we produced a recyclable, homogeneous, and highly sensitive SERS substrate with dependable reproducibility. For the SERS substrate, a surface made up of two-dimensional (2D) flexible grating substrates was chosen to provide multiple modalities in electrical and medicinal applications.

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