New Electrode Material GCE/AgNPs‐LS/Hg Based on Nanosilver Produced with the Use of Biopolymers

Abstract

A method of producing nanosilver by using lignosulfonic acid derivative and a new method of the obtained AgNPs‐LS electrode material for developing a chemically modified GCE/AgNPs‐LS/Hg electrode is presented. The data demonstrate that the modified electrode shows enhanced performance in determining Tl+ ions in comparison to unmodified electrode GCE. The stripping anodic peak current of thallium characterized in linearity over its concentration range from 1.22 ⋅ 10−8 to 1.15 ⋅ 10−7 mol dm−3, with detection limit 4.6 ⋅ 10−9 mol dm−3. It is assumed that the novel AgNPs‐LS/Hg2+ complex is suitable for preparing functionalized nanostructured material and can be used as an electrochemical sensing platform for heavy metals.

New electrode material GCE/AgNPs‐D3 as an electrochemical sensor used for the detection of thallium ions

“…A similar example that uses DP-ASV is the modification of a glassy carbon electrode with silver nanostructures GCE/AgNPs-LS/Hg. In this case, the linearity range was from 1.22 • 10 À 8 to 1.15 • 10 À 7 mol • dm À 3 and the LOD was 4.6 • 10 À 9 mol • dm À 3 [8]. Another example that also uses DP-ASV is the modification of a glassy carbon electrode with reduced graphene oxide (RGO).…”