Spectacular Oxygen Evolution Reaction Enhancement Through Laser Processing of the Nickel-Decorated Titania Nanotubes

Jakub Wawrzyniak; Jakub Karczewski; Emerson Coy; Igor Iatsunskyi; Jacek Ryl; Maria Gazda; Katarzyna Grochowska; Siuzdak Katarzyna

doi:10.1002/admi.202001420

Spectacular Oxygen Evolution Reaction Enhancement Through Laser Processing of the Nickel-Decorated Titania Nanotubes

Abstract

The selective, laser-induced modification of the nickel-decorated titania nanotubes provides remarkable enhancement toward oxygen evolution reaction. Particularly, the irradiation of the laterally spaced crystalline TiO2 nanotubes, results in the formation of the tight closure over irradiated end, preserving their hollow interior. The shape of the absorbance spectra is modulated along with applied energy, and the new absorption band appears at 500 nm, where the local minimum can be found for bare nanotubes. The high-resolution X-ray photoelectron spectra indicate the presence of both metallic and hydroxide forms of nickel species. The electrode material treated with 355 nm pulses at 50 mJ cm−2 shows significantly improved current densities in the anodic regime, reaching nearly 300 mA cm−2 while exposed to solar radiation, whereas the untreated sample barely comes to 1.5 mA cm−2 in the same conditions. The tailored titania photoanode also exhibits two orders of magnitude higher donor concentration in comparison to the primary substrate as verified by Mott–Schottky analysis. The electrochemical analysis confirms the key role of laser annealing in enhancing the effectiveness of light-driven water splitting.

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Authors (8)

Jakub Wawrzyniak
- Instytut Maszyn Przepływowych PAN
Jakub Karczewski dr hab. inż.
Emerson Coy
- Adam Mickiewicz University
Igor Iatsunskyi
- Adam Mickiewicz University
Jacek Ryl dr hab. inż.
Maria Gazda prof. dr hab. inż.
Katarzyna Grochowska
- Instytut Maszyn Przepływowych PAN
Siuzdak Katarzyna dr hab. inż
- Instytut Maszyn Przepływowych PAN

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Publication version: Accepted or Published Version
DOI:: Digital Object Identifier (open in new tab) 10.1002/admi.202001420
License: Copyright (2020 Wiley-VCH GmbH)

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Category:: Articles
Type:: artykuły w czasopismach
Published in:: Advanced Materials Interfaces no. 8,
ISSN: 2196-7350
Language:: English
Publication year:: 2021
Bibliographic description:: Wawrzyniak J., Karczewski J., Coy E., Iatsunskyi I., Ryl J., Gazda M., Grochowska K., Katarzyna S.: Spectacular Oxygen Evolution Reaction Enhancement Through Laser Processing of the Nickel-Decorated Titania Nanotubes// Advanced Materials Interfaces -,iss. 8 (2021), s.210149-
DOI:: Digital Object Identifier (open in new tab) 10.1002/admi.202001420
Verified by:: Gdańsk University of Technology