Determination of Lead (II) Concentration Using Iminodiacetic Acid-Modified Silver Nanoparticles by Highly Sensitive SERS Technique

NANO ◽  
2017 ◽  
Vol 12 (07) ◽  
pp. 1750090
Author(s):  
Na Li ◽  
Yaoyong Meng ◽  
Yongfang Dong ◽  
Zhiyou Guo ◽  
Nan Li
Keyword(s):  
Silver Nanoparticles ◽  
Limit Of Detection ◽  
Iminodiacetic Acid ◽  
High Sensitivity ◽  
World Health ◽  
Raman Signal ◽  
Highly Sensitive ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Highly Sensitive Detection

A system for the highly sensitive detection of Pb[Formula: see text] ions by surface-enhanced Raman scattering (SERS) was designed based on silver nanoparticles (AgNPs) capped with iminodiacetic acid (IDA)/4-mercaptopyridine (4-MPY). In this system, IDA was absorbed on the surface of the AgNPs to induce the coupling of Pb[Formula: see text] ions for aggregation in the aqueous solution. 4-MPY, which was also attached to the surface of the AgNPs, was used as a Raman reporter. When the concentration of Pb[Formula: see text] ions increased, a stronger 4-MPY Raman signal was detected. The IDA and 4-MPY concentrations were adjusted to maximize the 4-MPY Raman signal. Under this optimal condition, the concentration of Pb[Formula: see text] ions had a linear relationship with 4-MPY Raman signal in the range of 1[Formula: see text][Formula: see text][Formula: see text]108 to [Formula: see text][Formula: see text]mol/L ([Formula: see text]). The limit of detection (LOD) of 1.816[Formula: see text]nmol/L was obtained, which is significantly lower than the World Health Organization’s (WHO) defined limit of 100[Formula: see text][Formula: see text]g/L in drinking water. This system was successfully applied to determine the Pb[Formula: see text] concentration in a contaminated water sample, which is obtained by adding a trace of Pb[Formula: see text] ions to drinking mineral water. The results proved that the IDA/4-MPY-modified AgNPs sensing system had a potential application for the Pb[Formula: see text] measurement with high sensitivity and excellent selectivity.

scholarly journals Highly sensitive detection of estradiol by a SERS sensor based on TiO2 covered with gold nanoparticles

2020 ◽  
Vol 11 ◽  
pp. 1026-1035 ◽  
Author(s):  
Andrea Brognara ◽  
Ili F Mohamad Ali Nasri ◽  
Beatrice R Bricchi ◽  
Andrea Li Bassi ◽  
Caroline Gauchotte-Lindsay ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Dynamic Range ◽  
Limit Of Detection ◽  
Gold Deposition ◽  
Annealing Conditions ◽  
Highly Sensitive ◽  
Surface Enhanced Raman ◽  
17Β Estradiol ◽  
Enhanced Raman Scattering ◽  
Highly Sensitive Detection

We propose the use of gold nanoparticles grown on the surface of nanoporous TiO2 films as surface-enhanced Raman scattering (SERS) sensors for the detection of 17β-estradiol. Gold deposition on top of a TiO2 surface leads to the formation of nanoparticles the plasmonic properties of which fulfil the requirements of a SERS sensor. The morphological and optical properties of the surface were investigated. Specifically, we demonstrate that the TiO2 background pressure during pulsed laser deposition and the annealing conditions offer control over the formation of Au nanoparticles with different sizes, shapes and distributions, yielding a versatile sensor. We have exploited the surface for the detection of 17β-estradiol, an emerging contaminant in environmental waters. We have found a limit of detection of 1 nM with a sensitivity allowing for a dynamic range of five orders of magnitude (up to 100 µM).

scholarly journals Highly sensitive detection of estradiol by a SERS sensor based on TiO2 covered with gold nanoparticles

2020 ◽  
Author(s):  
Andrea Brognara ◽  
Ili F Mohamad Ali Nasri ◽  
Beatrice R Bricchi ◽  
Andrea Li Bassi ◽  
Caroline Gauchotte-Lindsay ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Dynamic Range ◽  
Limit Of Detection ◽  
Gold Deposition ◽  
Annealing Conditions ◽  
Highly Sensitive ◽  
Surface Enhanced Raman ◽  
17Β Estradiol ◽  
Enhanced Raman Scattering ◽  
Highly Sensitive Detection

We propose the use of gold nanoparticles grown on the surface of nanoporous TiO2 films as Surface Enhanced Raman Scattering (SERS) sensors for the detection of 17β-estradiol. Gold deposition on top of TiO2 surfaces leads to the formation of nanoparticles, which plasmonic properties fit the requirements of a SERS sensor well. The morphological and optical properties of this surface were investigated. Specifically, we demonstrated that the TiO2 background pressure during pulsed laser deposition and annealing conditions enabled the formation of a variety of Au nanoparticles with controlled size, shape and distribution thus resulting in a versatile sensor. We have exploited this surface for the detection of 17β-estradiol, an emerging contaminant in environmental waters. We have found a limit of detection of 10 nM with a sensitivity allowing dynamic range of five orders of magnitude (up to 100 µM).

Highly sensitive detection of paclitaxel by surface-enhanced Raman scattering

2015 ◽  
Vol 17 (11) ◽  
pp. 114019 ◽  
Author(s):  
Maximilien Cottat ◽  
Nathalie Lidgi-Guigui ◽  
Frédéric Hamouda ◽  
Bernard Bartenlian ◽  
Divya Venkataraman ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Surface Enhanced Raman Scattering ◽  
Sensitive Detection ◽  
Highly Sensitive ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Highly Sensitive Detection

scholarly journals A Biomedical Surface Enhanced Raman Scattering Substrate: Functionalized Three-Dimensional Porous Membrane Decorated with Silver Nanoparticles

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Li Yuan ◽  
Jinghuai Fang ◽  
Yonglong Jin ◽  
Chaonan Wang ◽  
Tian Xu
Keyword(s):  
Silver Nanoparticles ◽  
Raman Scattering ◽  
Three Dimensional ◽  
Surface Enhanced Raman Scattering ◽  
Porous Membrane ◽  
Raman Signal ◽  
Functional Surface ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

We fabricated a simple, cheap, and functional surface enhanced Raman scattering substrate for biomedical application. Hot spots between two close silver nanoparticles distributed in the skeleton of a three-dimensional porous membrane, especially in the pores, were formed. The dual poles of micropores in the membrane were discussed. The pores could protect the silver nanoparticles in the pores from being oxidized, which makes the membrane effective for a longer period of time. In addition,Staphylococcus aureuscells could be trapped by the micropores and then the Raman signal became stronger, indicating that the functional surface enhanced Raman scattering substrate is reliable.

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 Fabrication and SERS Performances of Metal/Si and Metal/ZnO Nanosensors: A Review

Coatings ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 86 ◽  
Author(s):  
Grégory Barbillon
Keyword(s):  
Short Review ◽  
Biological Molecules ◽  
Sers Substrates ◽  
Highly Sensitive ◽  
Gold Silver ◽  
Semiconducting Nanostructures ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Highly Sensitive Detection ◽  
Analytical Tools

Surface-enhanced Raman scattering (SERS) sensors are very powerful analytical tools for the highly sensitive detection of chemical and biological molecules. Substantial efforts have been devoted to the design of a great number of hybrid SERS substrates such as silicon or zinc oxide nanosystems coated with gold/silver nanoparticles. By comparison with the SERS sensors based on Au and Ag nanoparticles/nanostructures, higher enhancement factors and excellent reproducibilities are achieved with hybrid SERS nanosensors. This enhancement can be due to the appearance of hotspots located at the interface between the metal (Au/Ag) and the semiconducting substrates. Thus, in this last decade, great advances in the domain of hybrid SERS nanosensors have occurred. In this short review, the recent advances of these hybrid metal-coated semiconducting nanostructures as SERS sensors of chemical and biological molecules are presented.

scholarly journals Rapid and sensitive detection of uranyl ion with citrate-stabilized silver nanoparticles by the surface-enhanced Raman scattering technique

2018 ◽  
Vol 5 (11) ◽  
pp. 181099 ◽  
Author(s):  
Jiaolai Jiang ◽  
Shaofei Wang ◽  
Hui Deng ◽  
Haoxi Wu ◽  
Jun Chen ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Quantitative Analysis ◽  
Limit Of Detection ◽  
Nuclear Industry ◽  
Internal Reference ◽  
Surface Enhanced ◽  
Scattering Technique ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Relationship Of

Uranium contamination poses a huge threat to human health due to its widespread use in the nuclear industry and weapons. We proposed a simple and convenient wet-state SERS method for uranyl detection based on the citrate-stabilized silver nanoparticles. The effect of citrate on the detection performance was also discussed. By using the citrate as an internal reference to normalize the peak of uranyl, a quantitative analysis was achieved and a good linear relationship of uranyl concentration from 0.2 to 5 µM with the limit of detection of 60 nM was obtained. With its simplicity, convenience and cost-effectiveness, this method has great potential for the detection of other molecules also.

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