In situ synthesis of pristine-graphene/Ag nanocomposites as highly sensitive SERS substrates

RSC Advances ◽  
2016 ◽  
Vol 6 (94) ◽  
pp. 91579-91583 ◽  
Author(s):  
Xiujuan Wang ◽  
Chuhong Zhu ◽  
Zhulin Huang ◽  
Xiaoye Hu ◽  
Xiaoguang Zhu
Keyword(s):  
Chemical Reduction ◽  
In Situ Synthesis ◽  
Pristine Graphene ◽  
Sers Substrates ◽  
Highly Sensitive ◽  
Methyl Pyrrolidone

In this paper, we proposed a simple in situ method for the synthesis of pristine-graphene/Ag nanocomposites by chemical reduction of Ag ions in a N-methyl pyrrolidone solution in which pristine-graphene had been homogeneously dispersed.

A novel method for in situ synthesis of SERS-active gold nanostars on polydimethylsiloxane film

2017 ◽  
Vol 53 (37) ◽  
pp. 5121-5124 ◽  
Author(s):  
B. Fortuni ◽  
Y. Fujita ◽  
M. Ricci ◽  
T. Inose ◽  
R. Aubert ◽  
...  
Keyword(s):  
In Situ Synthesis ◽  
Step Method ◽  
Sers Substrates ◽  
Gold Nanostars ◽  
Highly Sensitive ◽  
One Step ◽  
Novel Method

A one-step method to form gold nanostars on a polydimethylsiloxane film is proposed for highly-sensitive SERS substrates.

scholarly journals In situ synthesis of Au-shelled Ag nanoparticles on PDMS for flexible, long-life, and broad spectrum-sensitive SERS substrates

2017 ◽  
Vol 53 (82) ◽  
pp. 11298-11301 ◽  
Author(s):  
B. Fortuni ◽  
T. Inose ◽  
S. Uezono ◽  
S. Toyouchi ◽  
K. Umemoto ◽  
...  
Keyword(s):  
In Situ Synthesis ◽  
Sers Substrates ◽  
Highly Sensitive ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
One Step ◽  
Enhanced Raman Scattering ◽  
Oxidation Resistant ◽  
Long Life

A simple, fast, one-step fabrication of silver nanoparticles with atomically thin gold coatings on polydimethylsiloxane affords oxidation-resistant and highly sensitive surface enhanced Raman scattering (SERS) substrates.

scholarly journals In situ synthesis of low-cost and large-scale flexible metal nanoparticle–polymer composite films as highly sensitive SERS substrates for surface trace analysis

RSC Advances ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 2857-2864 ◽  
Author(s):  
Chenghua Zong ◽  
Mengyi Ge ◽  
Hong Pan ◽  
Jing Wang ◽  
Xinming Nie ◽  
...  
Keyword(s):  
Polymer Composite ◽  
Large Scale ◽  
Low Cost ◽  
Composite Films ◽  
In Situ Synthesis ◽  
Metal Nanoparticle ◽  
Sers Substrates ◽  
Highly Sensitive ◽  
Flexible Metal

Facile and large-scale synthesis of flexible metal nanoparticle–polymer composite films as highly sensitive SERS substrates for in situ food inspection.

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.

Speedy and surfactant-free in situ synthesis of nickel/Ag nanocomposites for reproducible SERS substrates

2012 ◽  
Vol 22 (37) ◽  
pp. 19932 ◽  
Author(s):  
Qianqian Ding ◽  
Honglin Liu ◽  
Liangbao Yang ◽  
Jinhuai Liu
Keyword(s):  
In Situ Synthesis ◽  
Sers Substrates

Electrospun flexible poly(bisphenol A carbonate) nanofibers decorated with Ag nanoparticles as effective 3D SERS substrates for trace TNT detection

The Analyst ◽  
2017 ◽  
Vol 142 (24) ◽  
pp. 4756-4764 ◽  
Author(s):  
Yi Li ◽  
Rui Lu ◽  
Jinyou Shen ◽  
Weiqing Han ◽  
Xiuyun Sun ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Ag Nanoparticles ◽  
Chemical Reduction ◽  
Sers Substrate ◽  
Sers Substrates ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Tnt Detection

A flexible 3D hybrid PC/Ag surface-enhanced Raman scattering (SERS) substrate was fabricated through the combination of electrospinning and in situ chemical reduction.

scholarly journals Graphene Aerogels for In Situ Synthesis of Conductive Poly(para-phenylenediamine) Polymers, and Their Sensor Application

Micromachines ◽  
2020 ◽  
Vol 11 (7) ◽  
pp. 626
Author(s):  
Sahin Demirci ◽  
Mehmet Can ◽  
Nurettin Sahiner
Keyword(s):  
Chemical Reduction ◽  
Fold Increase ◽  
In Situ Synthesis ◽  
Conductivity Measurements ◽  
Co2 Gas ◽  
Graphene Aerogels ◽  
Different Types ◽  
Co2 Detection ◽  
Ft Ir

In this study, macroporous graphene aerogels (GAs) were synthesized by chemical reduction of graphene oxide sheets and were used as a support material for in situ synthesis of conductive poly(para-phenylenediamine) (p(p-PDA)). The in situ synthesis of p(p-PDA) in GA was carried out by using a simple oxidation polymerization technique. Moreover, the prepared conductive p(p-PDA) polymers in the networks of GAs were doped with various types of acids such as hydrochloric acid (HCl), nitric acid (HNO3), sulfuric acid (H2SO4), phosphoric acid (H3PO4), respectively. The prepared GA and different acid-doped forms as GA/p(p-PDA) composites were characterized by FT-IR, TGA, and conductivity measurements. The observed FT-IR peaks at 1574 cm−1, and 1491 cm−1, for stretching deformations of quinone and benzene, respectively, confirmed the in situ synthesis of P(p-PDA) polymers within GAs. The conductivity of GAs with 2.17 × 10−4 ± 3.15 × 10−5 S·cm−1 has experienced an approximately 250-fold increase to 5.16 × 10−2 ± 2.72 × 10−3 S·cm−1 after in situ synthesis of p(p-PDA) polymers and with HCl doping. Conductivity values for different types of acid-doped GA/p(p-PDA) composites were compared with the bare p(p-PDA) and their undoped forms. Moreover, the changes in the conductivity of GA and GA/p(p-PDA) composites upon CO2 gas exposure were compared and their sensory potential in terms of response and sensitivity, along with reusability in CO2 detection, were evaluated.

Two-dimensional flower-shaped Au@Ag nanoparticle arrays as effective SERS substrates with high sensitivity and reproducibility for detection of thiram

2020 ◽  
Vol 8 (11) ◽  
pp. 3838-3845 ◽  
Author(s):  
Changchang Xing ◽  
Shichuan Zhong ◽  
Jie Yu ◽  
Xuejiao Li ◽  
An Cao ◽  
...  
Keyword(s):  
Chemical Reduction ◽  
High Sensitivity ◽  
Two Dimensional ◽  
Nanoparticle Arrays ◽  
Ag Nanoparticle ◽  
Sers Substrates

A simple and controllable route is presented for the construction of two-dimensional (2D) flower-shaped Au@Ag nanoparticle (NP) arrays through in situ chemical reduction growth of Ag nanosheets on Au NP arrays.

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