Accelerating test to assess metal release to the environment from nanowire transparent conducting films

Omana, B; Lesven, L; Sobanska, S; Toybou, D; Celle, C; Gilbert, B; Charlet, L; Hofmann, Annette

Document type :

Autre communication scientifique (congrès sans actes - poster - séminaire...): Communication dans un congrès avec actes

Title :

Accelerating test to assess metal release to the environment from nanowire transparent conducting films

Author(s) :

Omana, B [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Lesven, L [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516 [LASIRE]
Sobanska, S [Auteur]
Institut des Sciences Moléculaires [ISM]
Toybou, D [Auteur]
Laboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux [LITEN]
Celle, C [Auteur]
Laboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux [LITEN]
Gilbert, B [Auteur]
Charlet, L [Auteur]
Hofmann, Annette [Auteur correspondant]

Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]

Conference title :

COST ACTION TD 1407_TCE final meeting Zagreb

City :

Zagreb

Country :

Croatie

Start date of the conference :

2019-04-02

Publication date :

2019

English keyword(s) :

Silver nano wires
AgNW

HAL domain(s) :

Chimie

English abstract : [en]

The increasing worldwide use of rare metals, including precious metals and critical metals, has an impacton the geochemical cycles of these elements. At all stages of a product life, these metals and theircompounds can be ...
Show more >The increasing worldwide use of rare metals, including precious metals and critical metals, has an impacton the geochemical cycles of these elements. At all stages of a product life, these metals and theircompounds can be released into the environment and come in contact with the biosphere. The use of raremetals in nanomaterials used in high-tech products can have particular issues for environmental impactbecause of the potentially colloïdal nature of these materials implying mobility, high surface reactivity andincreased solubility .We are focusing on silver nanowires (AgNW). These materials are designed to be incorporated intransparent conductive films, in electronics, microelectrodes, heated surfaces, etc. Although they arecommonly protected by a coating material, there is a risk for release of dissolved or nanoparticulatecompounds either during use or after diposal at end-of-life, because of some degree of permeability of theprotective material either at molecular level or because of mechanical or chemical degradation. Since ionicand nanoparticulate Ag is toxic to the biosphere, there is a need for quantifying potential release from theseproduct components .We developed a method to evaluate the corrosion activity of silver in nanowire transparent conductive filmsunder aqueous environmental conditions. In this method, the corrosion current response obtained fromAgNW coated films is quantified. It is shown that there is a consistent link between the current and thecoatings’ characteristics. The advantage of this approach compared to classical aging studies resides in itsmuch higher speed, 10-20 minutes are sufficient for a diagnostic result. The method is thus seen as anaccelerated corrosion test.We surmise that the method could be easily adapted to conducting films containing speciality elements, inparticular the TCEs.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Collections :

Laboratoire d'Océanologie et de Géosciences (LOG) - UMR 8187

Source :

Harvested from HAL

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