Charge Transfer during the Aluminum-Water Reaction Studied with Schottky Nanodiode Sensors.
Journal
ACS omega
ISSN: 2470-1343
Titre abrégé: ACS Omega
Pays: United States
ID NLM: 101691658
Informations de publication
Date de publication:
10 Dec 2019
10 Dec 2019
Historique:
received:
12
10
2019
accepted:
15
11
2019
entrez:
21
12
2019
pubmed:
21
12
2019
medline:
21
12
2019
Statut:
epublish
Résumé
The aluminum-water reaction is a promising source for hydrogen production. However, experimental studies of this reaction are difficult because of the highly concentrated alkaline solution used to activate the surface of aluminum. Here, we show that the reaction kinetics can be monitored in real time by a Schottky diode sensor, consisting of an ultrathin aluminum film deposited on a semiconductor substrate. Charge resulting from the corrosion of the aluminum film causes an electrical signal in the sensor, which is proportional to the rate of the chemical process. We discuss the possible mechanisms for the reaction-induced charge generation and transfer, as well as the use of Schottky diode based sensors for operando studies of the aluminum-water reaction and similar reactions on metals in concentrated alkaline solutions.
Identifiants
pubmed: 31858070
doi: 10.1021/acsomega.9b03397
pmc: PMC6906933
doi:
Types de publication
Journal Article
Langues
eng
Pagination
20838-20843Informations de copyright
Copyright © 2019 American Chemical Society.
Déclaration de conflit d'intérêts
The authors declare no competing financial interest.
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