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Article dans une revue

Electrogeneration of Diiodoaurate in Dimethylsulfoxide on Gold Substrate and Localized Patterning

Ahmed Kandory 1, 2 Reda Yahiaoui 3 Etienne Herth 3 Hélène Cattey 4 Tijani Gharbi 1 Guillaume Herlem 1, *
* Auteur correspondant
1 NIT / NANOMEDECINE - Nanomédecine, imagerie, thérapeutique - UFC (EA 4662)
2 Department of Chemistry, College of Science, University of Diyala
3 FEMTO-ST - Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174)
4 ICMUB - Institut de Chimie Moléculaire de l'Université de Bourgogne [Dijon]
Abstract : A localized etching of gold surface by scanning electrochemical microscope technique is presented where a dimethylsulfoxide-based electrolyte charged with iodine is used. The electrogenerated triiodide ion at the platinum ultramicroelectrode tip (feedback mode) acts as an oxidant for gold surface. The effects of electrode diameter and the bias time have been investigated. The approach curve method was used to hold the electrode tip close to the gold surface. A scanning electron microscope is used to observe the etched gold surfaces where disk-shaped dots are generated. The diameter of these holes depends directly on the Pt electrode diameter and the bias time.
Keywords : iodine-iodide feedback mode ionic liquid dissolution kinetics electron-beam lithography self-assembled monolayers scanning electrochemical microscopy utramicroelectrode gold etching silver iodine-iodide DFT SECM EQCM films bis(trifluoromethanesulfonyl)imide
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https://hal-univ-bourgogne.archives-ouvertes.fr/hal-01429802
Contributeur : Icmub - Université de Bourgogne <>
Soumis le : lundi 9 janvier 2017 - 10:52:05
Dernière modification le : mercredi 11 août 2021 - 09:39:37

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UNIV-BOURGOGNE | CNRS | UNIV-FCOMTE | UNIV-BM | FEMTO-ST | UNIV-BM-THESE | INC-CNRS | ICMUB

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Ahmed Kandory, Reda Yahiaoui, Etienne Herth, Hélène Cattey, Tijani Gharbi, et al.. Electrogeneration of Diiodoaurate in Dimethylsulfoxide on Gold Substrate and Localized Patterning. International Journal of Electrochemical Science, ESG 2016, 11 (9), pp.7540 - 7552. ⟨10.20964/2016.09.58⟩. ⟨hal-01429802⟩

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