Incorporation of multilayered silver nanoparticles into polymer brushes as 3-dimensional SERS substrates and their application for bacteria detection

2017 ◽  
Vol 407 ◽  
pp. 185-191 ◽  
Author(s):  
Qian Zhang ◽  
Xiang-Dong Wang ◽  
Ting Tian ◽  
Li-Qiang Chu
Keyword(s):  
Silver Nanoparticles ◽  
Polymer Brushes ◽  
Bacteria Detection ◽  
3 Dimensional ◽  
Sers Substrates

Highly Sensitive and Reproducible SERS Substrates Based on Ordered Micropyramid Array and Silver Nanoparticles

2021 ◽  
Author(s):  
Chengpeng Zhang ◽  
Shuai Chen ◽  
Zhaoliang Jiang ◽  
Zhenyu Shi ◽  
Jilai Wang ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Sers Substrates ◽  
Highly Sensitive

Immobilization of Silver Nanoparticles on Responsive Polymer Brushes

2008 ◽  
Vol 41 (8) ◽  
pp. 2874-2879 ◽  
Author(s):  
Smrati Gupta ◽  
Petra Uhlmann ◽  
Mukesh Agrawal ◽  
Severine Chapuis ◽  
Ulrich Oertel ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Polymer Brushes ◽  
Responsive Polymer

In situ and facile synthesis of silver nanoparticles on baby wipes and their applications in catalysis and SERS

RSC Advances ◽  
2016 ◽  
Vol 6 (6) ◽  
pp. 5016-5023 ◽  
Author(s):  
Bharat Baruah
Keyword(s):  
Silver Nanoparticles ◽  
Composite Materials ◽  
Heterogeneous Catalyst ◽  
Facile Synthesis ◽  
Sers Substrates ◽  
Efficient Heterogeneous Catalyst

Silver nanoparticles were immobilized on fibers to create composite materials. The composites are shown to be efficient heterogeneous catalyst with very good recyclability. These composite materials are also proven to be good SERS substrates.

scholarly journals Silver nanoparticles: green synthesis, self-assembled nanostructures and their application as SERS substrates

2015 ◽  
Vol 39 (4) ◽  
pp. 2839-2846 ◽  
Author(s):  
Elias de Barros Santos ◽  
Natiara Vaughn Madalossi ◽  
Fernando Aparecido Sigoli ◽  
Italo Odone Mazali
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Probe Molecules ◽  
Citrus Peel ◽  
Sers Substrates ◽  
Self Assembled ◽  
Raman Probe

Plasmonic silver nanoparticles synthesized using citrus peel extracts exhibit SERS activity for different Raman probe molecules.

scholarly journals In-Situ Grown Silver Nanoparticles on Nonwoven Fabrics Based on Mussel-Inspired Polydopamine for Highly Sensitive SERS Carbaryl Pesticides Detection

Nanomaterials ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 384 ◽  
Author(s):  
Zhiliang Zhang ◽  
Tiantian Si ◽  
Jun Liu ◽  
Guowei Zhou
Keyword(s):  
Silver Nanoparticles ◽  
Collection Efficiency ◽  
High Sensitivity ◽  
Sers Substrate ◽  
Analytical Sensitivity ◽  
Sers Substrates ◽  
Rapid Sampling ◽  
Highly Sensitive ◽  
Highly Sensitive Detection

The rapid sampling and efficient collection of target molecules from a real-world surface is fairly crucial for surface-enhanced Raman scattering (SERS) to detect trace pesticide residues in the environment and in agriculture fields. In this work, a versatile approach was exploited to fabricate a flexible SERS substrate for highly sensitive detection of carbaryl pesticides, using in-situ grown silver nanoparticles (AgNPs)on non-woven (NW) fabric surfaces based on mussel-inspired polydopamine (PDA) molecules. The obtained NW@PDA@AgNPs fabrics showed extremely sensitive and reproducible SERS signals toward crystal violet (CV) molecules, and the detection limit was as low as 1.0 × 10−12 M. More importantly, these NW@PDA@AgNPs fabrics could be directly utilized as flexible SERS substrates for the rapid extraction and detection of trace carbaryl pesticides from various fruit surfaces through a simple swabbing approach. It was identified that the detection limits of carbaryl residues from apple, orange, and banana surfaces were approximately decreased to 4.02 × 10−12, 6.04 × 10−12, and 5.03 × 10−12 g, respectively, demonstrating high sensitivity and superior reliability. These flexible substrates could not only drastically increase the collection efficiency from multifarious irregular-shaped matrices, but also greatly enhance analytical sensitivity and reliability for carbaryl pesticides. The fabricated flexible and multifunctional SERS substrates would have great potential to trace pesticide residue detection in the environment and bioscience fields.

scholarly journals SERS Activity of Silver Nanosphere, Triangular Nanoplates, Hexagonal Nanoplates and Quasi-Spherical Nanoparticles: Effect of Shape and Morphology

Coatings ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 288 ◽  
Author(s):  
Marco Zannotti ◽  
Andrea Rossi ◽  
Rita Giovannetti
Keyword(s):  
Methylene Blue ◽  
Silver Nanoparticles ◽  
Raman Scattering ◽  
Vinyl Pyrrolidone ◽  
Sers Substrates ◽  
Vis Spectroscopy ◽  
Surface Enhanced Raman ◽  
One Step ◽  
Poly Vinyl Pyrrolidone ◽  
Hexagonal Nanoplates

In this work, we prepared different morphologies of silver nanoparticles: nanosphere, triangular nanoplates, hexagonal nanoplates, and quasi-spherical shapes, through one-step synthesis. Hydrogen peroxide was used as the oxidizing agent during the reduction of silver nitrate by sodium borohydride, in the presence of tri-sodium citrate and poly-vinyl-pyrrolidone. The obtained silver nanoparticles were fully characterized by UV-Vis spectroscopy, Dynamic Light Scattering and Scanning Electron Microscopy, and successfully used as Surface Enhanced Raman Scattering (SERS) substrates. The effect of shape and morphology on the Raman scattering enhancement was evaluated by using methylene blue as target molecules. The Raman measurements demonstrated that the prepared substrates are reliable and sensitive with analytical enhancement factors, estimated to be around 105 with a concentration of methylene blue 1 μM. When triangular and hexagonal nanoplates were tested with different concentrations of analyte, they demonstrated a good linearity in Raman intensity with a good detection of methylene blue 0.1 μM.

Immobilization of silver nanoparticles into POEGMA polymer brushes as SERS-active substrates

2016 ◽  
Vol 49 (4) ◽  
pp. 316-322 ◽  
Author(s):  
Qian Zhang ◽  
Jun-Jiao Yin ◽  
Feng Liu ◽  
Xue-Na Zou ◽  
Li-Qiang Chu
Keyword(s):  
Silver Nanoparticles ◽  
Polymer Brushes

Tailoring Size and Coverage Density of Silver Nanoparticles on Monodispersed Polymer Spheres as Highly Sensitive SERS Substrates

2016 ◽  
Vol 11 (17) ◽  
pp. 2428-2435 ◽  
Author(s):  
Yougen Hu ◽  
Tao Zhao ◽  
Pengli Zhu ◽  
Yu Zhu ◽  
Xianwen Liang ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Sers Substrates ◽  
Coverage Density ◽  
Highly Sensitive ◽  
Polymer Spheres

Three-Dimensional Surface-Enhanced Raman Scattering Substrate Fabricated Using Chemical Decoration of Silver Nanoparticles on Electrospun Polycarbonate Nanofibers

2016 ◽  
Vol 71 (5) ◽  
pp. 879-887 ◽  
Author(s):  
Murugesan Balamurugan ◽  
Jyisy Yang
Keyword(s):  
Silver Nanoparticles ◽  
Raman Scattering ◽  
High Efficiency ◽  
Three Dimensional ◽  
Surface Enhanced Raman Scattering ◽  
Simple Method ◽  
Sers Substrates ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

In this work, a simple method via decoration of silver nanoparticles (AgNPs) on electrospun polycarbonate nanofibers (PCNFs) was proposed to prepare highly sensitive three-dimensional (3D) substrates for surface-enhanced Raman scattering (SERS) measurements. The method proposed in this work gave a high sensitive Ag@PCNFs substrate, which resulted from a successful production of high surface area of PCNFs with a high efficiency in the decoration of AgNPs. To produce PCNFs suitable for SERS application, parameters in fabrication of PCNFs were systematically examined and correlated with their corresponding scanning electron microscope (SEM) images. Examined parameters included the concentration of PC solution, the solvent to form PC solution, the applied voltage, and the rotating speed of a drum collector. Using the optimized condition, the bead-free PCNFs with a diameter in the range of 200–400 nm were successfully produced. To increase the efficiency in decoration of AgNPs, the surface properties of PNCFs were altered with an organic solvent, which was selected experimentally with guidance of Hildebrand solubility parameter. Results indicated that methanol was the most suitable solvent to effectively decorate AgNPs on PCNFs. By probing with para-hydroxythiophenol (pHTP), prepared SERS substrates of Ag@PCNFs provided an enhancement factor to the order of 7, which is at least an order of magnitude larger than the reported values in the literature for SERS substrates prepared with the electrospinning technique.

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