A disposable sticky electrode for the detection of commercial silver NPs in seawater

The ability to perform efficient and affordable field detection and quantification of nanoparticles in aquatic environmental systems remains a significant technical challenge. Recently we reported a proof of concept of using 'sticky' electrodes for the detection of silver nanoparticles (Ts...

Full description

Saved in:
Bibliographic Details
Published in:Nanotechnology 2013-12, Vol.24 (50), p.505501-505501
Main Authors: Cheng, W, Stuart, E J E, Tschulik, K, Cullen, J T, Compton, R G
Format: Article
Language:English
Subjects:
Cross-disciplinary physics: materials science
rheology
Cysteine
Electrodes
Environmental monitoring
Exact sciences and technology
Materials science
Nanocrystalline materials
Nanoparticles
Nanoscale materials and structures: fabrication and characterization
Nanotechnology
Physics
Sea water
Silver
Stripping
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The ability to perform efficient and affordable field detection and quantification of nanoparticles in aquatic environmental systems remains a significant technical challenge. Recently we reported a proof of concept of using 'sticky' electrodes for the detection of silver nanoparticles (Tschulik et al 2013 Nanotechnology 29 295502). Now a disposable electrode for detection and quantification of commercial Ag nanoparticles in natural seawater is presented. A disposable screen printed electrode is modified with cysteine and characterized by sticking and stripping experiments, with silver nanoparticle immobilization on the electrode surface and subsequent oxidative stripping, yielding a quantitative determination of the amount of Ag nanoparticles adhering to the electrode surface. The modified electrode was applied to natural seawater to mimic field-based environmental monitoring of Ag NPs present in seawater. The results demonstrated that commercial Ag NPs in natural seawater can be immobilized, enriched and quantified within short time period using the disposable electrodes without any need for elaborate experiments.
ISSN:0957-4484
1361-6528
DOI:10.1088/0957-4484/24/50/505501