A gold nanoparticle chemically modified gold electrode for the determination of surfactants

RSC Advances ◽  
2016 ◽  
Vol 6 (108) ◽  
pp. 106500-106507 ◽  
Author(s):  
Daniele Merli ◽  
Chiara Ferrari ◽  
Elisa Cabrini ◽  
Giacomo Dacarro ◽  
Piersandro Pallavicini ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Gold Electrode ◽  
Redox Probe ◽  
Chemically Modified

A gold nanoparticles modified gold electrode was developed for the determination of surfactants in solution, using a redox probe and exploiting the tendency of surfactants to adsorb onto the nanoparticles' surface.

scholarly journals Disposable gold nanoparticle functionalized and bare screen-printed electrodes for potentiometric determination of trazodone hydrochloride in pure form and pharmaceutical preparations

RSC Advances ◽  
2018 ◽  
Vol 8 (21) ◽  
pp. 11517-11527 ◽  
Author(s):  
Fathy M. Salama ◽  
Khalid A. Attia ◽  
Ragab A. Said ◽  
Ahmed El-Olemy ◽  
Ahmed M. Abdel-raoof
Keyword(s):  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Electrochemical Sensors ◽  
Pharmaceutical Preparations ◽  
Potentiometric Determination ◽  
Chemically Modified ◽  
Screen Printed Electrodes ◽  
Trazodone Hydrochloride ◽  
Screen Printed

In the present study, screen-printed electrodes unmodified and chemically modified with gold nanoparticles were used as sensitive electrochemical sensors for the determination of trazodone hydrochloride.

β-Cyclodextrin protected gold nanoparticle based cotton swabs as an effective candidate for specific sensing of trace levels of cyanide

2019 ◽  
Vol 11 (1) ◽  
pp. 97-104 ◽  
Author(s):  
Ramar Rajamanikandan ◽  
Malaichamy Ilanchelian
Keyword(s):  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Water Based

In this paper, a rapid colorimetric and easy visual determination of cyanide ions (CN− ions) in water, based on gold nanoparticles (AuNPs) stabilized with β-cyclodextrin (β-CD), is described.

Electrochemical determination of trace copper(ii) based onl-cysteine functionalized gold nanoparticle/CdS nanosphere hybrid

2016 ◽  
Vol 8 (17) ◽  
pp. 3592-3598 ◽  
Author(s):  
Lin-Gang Li ◽  
Meng Chen ◽  
He-Qun Hao ◽  
Qing-Qing Xu ◽  
Ju Wu ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Electrochemical Determination ◽  
Carbon Electrode ◽  
Electrochemical Assay ◽  
Functionalized Gold Nanoparticles ◽  
Sensing Platform

This paper describes a simple and efficient electrochemical assay for the determination of trace Cu(ii) employingl-cysteine functionalized gold nanoparticles/CdS nanospheres/glassy carbon electrode (l-cys/AuNPs/CdS/GCE) as an enhanced sensing platform.

Enhanced electrochemical sensing of dopamine in the presence of AA and UA using a curcumin functionalized gold nanoparticle modified electrode

2019 ◽  
Vol 43 (48) ◽  
pp. 19003-19013 ◽  
Author(s):  
K. Krishna Kumar ◽  
M. Devendiran ◽  
R. A. Kalaivani ◽  
S. Sriman Narayanan
Keyword(s):  
Gold Nanoparticles ◽  
Electrochemical Sensor ◽  
Gold Nanoparticle ◽  
Modified Electrode ◽  
Electrochemical Sensing

In the present study, a electrochemical sensor for the determination of dopamine was developed with green synthesised gold nanoparticles using curcumin as a reducing and, functionalizing agent.

Reusable Electrochemical Biosensor for Sensitive Detection of Single Nucleotide Polymorphisms Based on Gold Nanoparticle Self-Assembly

2014 ◽  
Vol 651-653 ◽  
pp. 293-296
Author(s):  
Song Bai Zhang ◽  
Chun Jiao Tang ◽  
Liao Yong Luo ◽  
Na Liu ◽  
Qin Li Sun ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Single Nucleotide Polymorphisms ◽  
Gold Nanoparticle ◽  
Self Assembly ◽  
Gold Electrode ◽  
Sensitive Detection ◽  
Capture Probe ◽  
Nucleotide Polymorphisms ◽  
Single Nucleotide ◽  
Target Dna

A reusable electrochemical biosensing strategy based on gold nanoparticle involved layer-by-layer self-assembly for sensitive detection of single nucleotide polymorphisms is proposed in this study. Making use of the strong sulfur-Au affinity, ethanthiol and capture probe modified gold nanoparticles are self-assembled onto the surface of gold electrode successively. The target DNA hybridizes with the capture probe and ferrocene labeled signaling probe successively via sandwich hybridization reaction. By measuring ac current voltammetry, the target DNA can be sensitively detected in a linear dynamic range from 4.1-410 nM with a low detection limit of 2 nM. Making use of self-assembled gold nanoparticles layer, a large amount of capture probes can be modified onto the gold electrode, supporting the high sensitivity of the proposed strategy. In addition, good reproducibility, high selectivity and stability are achieved. In particular, the biosensor can be easily regenerated by melting in hot water, making it reusable.

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