Charge Transfer during the Aluminum-Water Reaction Studied with Schottky Nanodiode Sensors
Artikel i vetenskaplig tidskrift, 2019

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.

catalytic oxidation

hot electrons

electronic friction

Författare

Ievgen Nedrygailov

Institute for Basic Science

Chalmers, Fysik, Kemisk fysik

Yeob Heo

Institute for Basic Science

Korea Advanced Institute of Science and Technology

Heeyoung Kim

Institute for Basic Science

Korea Advanced Institute of Science and Technology

Jeong Young Park

Institute for Basic Science

Korea Advanced Institute of Science and Technology

ACS Omega

24701343 (eISSN)

Vol. 4 24 20838-20843

Ämneskategorier

Oorganisk kemi

Annan kemiteknik

Organisk kemi

DOI

10.1021/acsomega.9b03397

Mer information

Senast uppdaterat

2020-01-10