GOLD NANOPARTICLES-CYSTEINE-MULTIWALL CARBON NANOTUBE MODIFIED ELECTRODE FOR HEAVY METAL IONS DETECTION

1 KOUDELKOVA Zuzana
Co-authors:
1,2 RICHTERA Lukas 1 SVEC Pavel 1,2 ADAM Vojtech
Institutions:
1 Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-61300 Brno, Czech Republic
2 Central European Institute of Technology, Brno University of Technology, Purkyňova 123, CZ-61200 Brno, Czech Republic
Conference:
10th International Conference on Nanomaterials - Research & Application, Hotel Voronez I, Brno, Czech Republic, EU, October 17th - 19th 2018
Proceedings:
Proceedings 10th International Conference on Nanomaterials - Research & Application
Pages:
69-72
ISBN:
978-80-87294-89-5
ISSN:
2694-930X
Published:
28th February 2019
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
118 views / 40 downloads
Abstract

The environmental contamination by heavy metals is one of the global problems that disturb the ecological balance. A platform for the simultaneous electrochemical detection of trace heavy metal ions has been developed based on the gold nanoparticles-cysteine-multiwall carbon nanotubes (AuNPs-Cys-MWCNTs) modified carbon paste electrode using square wave anodic stripping voltammetry. The voltammetric method was optimized with respect to accumulation time, accumulation potential and other parameters. The syntheses of AuNPs-Cys-MWCNTs composite with different AuNPs diameters were described and characterization using Dynamic light scattering and Scanning electron microscopy was performed. The AuNPs-Cys-MWCNTs composite significantly increases the electrode sensitivity towards Cd(II), Pb(II), Cu(II) and Zn(II). The AuNPs-Cys-MWCNTs composite has promising significance for future using, for example as a modification of the screen printed electrodes (SPEs), which would be used for low-cost and fast in situ measurement.

Keywords: gold nanoparticles-cysteine-multiwall carbon nanotube composite, electrochemistry, paste electrode, screen printed electrode, ecological problems, heavy metals

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