Hydride formation and dynamic phase changes during template-assisted Pd electrodeposition.
Nanotechnology
; 34(50)2023 Oct 11.
Article
en En
| MEDLINE
| ID: mdl-37666238
ABSTRACT
We investigated the structural evolution of electrochemically fabricated Pd nanowiresin situby means of grazing-incidence transmission small- and wide-angle x-ray scattering (GTSAXS and GTWAXS), x-ray fluorescence (XRF) and two-dimensional surface optical reflectance (2D-SOR). This shows how electrodeposition and the hydrogen evolution reaction (HER) compete and interact during Pd electrodepositon. During the bottom-up growth of the nanowires, we show thatß-phase Pd hydride is formed. Suspending the electrodeposition then leads to a phase transition fromß-phase Pd hydride toα-phase Pd. Additionally, we find that grain coalescence later hinders the incorporation of hydrogen in the Pd unit cell. GTSAXS and 2D-SOR provide complementary information on the volume fraction of the pores occupied by Pd, while XRF was used to monitor the amount of Pd electrodeposited.
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Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Nanotechnology
Año:
2023
Tipo del documento:
Article
País de afiliación:
Suecia