Different Electrochemical Sensor Designs Based on Diazonium Salts and Gold Nanoparticles for Pico Molar Detection of Metals

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ID: 111886
2020
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Abstract
We report a comparison of sensors’ performance of different hybrid nanomaterial architectures modifying an indium tin oxide (ITO) electrode surface. Diazonium salts and gold nanoparticles (AuNPs) were used as building units to design hybrid thin films of successive layers on the ITO electrode surface. Different architectures of hybrid thin films were prepared and characterized with different techniques, such as TEM, FEG-SEM, XPS, and EIS. The prepared electrodes were used to fabricate sensors for heavy metal detection and their performances were investigated using the square wave voltammetry (SWV) method. The comparison of the obtained results shows that the deposition of AuNPs on the ITO surface, and their subsequent functionalization by diazonium salt, is the best performing architecture achieving a high sensitivity in terms of the lower detection limit of pico molar.
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ait-touchente2020moleculesdifferent Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Zouhair Ait-Touchente;Sana Falah;Erika Scavetta;Mohamed M. Chehimi;Rachid Touzani;Domenica Tonelli;Abdelhafed Taleb;Ait-Touchente, Zouhair;Falah, Sana;Scavetta, Erika;Chehimi, Mohamed M.;Touzani, Rachid;Tonelli, Domenica;Taleb, Abdelhafed;
Journal molecules
Year 2020
DOI
10.3390/molecules25173903
URL
https://www.mdpi.com/1420-3049/25/17/3903
Keywords
au nanoparticles diazonium salts electrochemical sensor design copper detection

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