Quaternized chitosan/silver nanoparticles composite as a SERS substrate for detecting tricyclazole and Sudan I

2015 ◽  
Vol 351 ◽  
pp. 466-473 ◽  
Author(s):  
Kaihang Chen ◽  
Zuguang Shen ◽  
Jiwen Luo ◽  
Xiaoying Wang ◽  
Runcang Sun
Keyword(s):  
Silver Nanoparticles ◽  
Sers Substrate ◽  
Quaternized Chitosan ◽  
Sudan I

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.

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.

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.

Nanoporous gold decorated with silver nanoparticles as large area efficient SERS substrate

2017 ◽  
Author(s):  
Denis Garoli ◽  
Eugenio Calandrini ◽  
Paolo Ponzellini ◽  
Matteo Ardini ◽  
Sandro Cattarin ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Nanoporous Gold ◽  
Sers Substrate ◽  
Large Area ◽  
Area Efficient

scholarly journals A P/N type silicon semiconductor loaded with silver nanoparticles used as a SERS substrate to selectively drive the coupling reaction induced by surface plasmons

2020 ◽  
Vol 2 (8) ◽  
pp. 3460-3466
Author(s):  
Yuanchun Zhao ◽  
Qijia Zhang ◽  
Liping Ma ◽  
Peng Song ◽  
Lixin Xia
Keyword(s):  
Silver Nanoparticles ◽  
Surface Plasmons ◽  
Coupling Reaction ◽  
Optoelectronic Properties ◽  
Semiconductor Materials ◽  
Sers Substrate ◽  
Type Silicon

Semiconductor materials are favoured in the field of SERS catalysis due to their unique optoelectronic properties.

Porous carbon films decorated with silver nanoparticles as a sensitive SERS substrate, and their application to virus identification

2017 ◽  
Vol 184 (9) ◽  
pp. 3505-3511 ◽  
Author(s):  
Zhihui Luo ◽  
Lina Chen ◽  
Chunjie Liang ◽  
Qingmin Wei ◽  
Yuan Chen ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Porous Carbon ◽  
Carbon Films ◽  
Sers Substrate ◽  
Virus Identification
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