Amorphous NiCu Thin Films Sputtered on TiO2 Nanotube Arrays: A Noble-Metal Free Photocatalyst for Hydrogen Evolution
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15640%2F22%3A73618786" target="_blank" >RIV/61989592:15640/22:73618786 - isvavai.cz</a>
Result on the web
<a href="https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/cctc.202201052" target="_blank" >https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/cctc.202201052</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/cctc.202201052" target="_blank" >10.1002/cctc.202201052</a>
Alternative languages
Result language
angličtina
Original language name
Amorphous NiCu Thin Films Sputtered on TiO2 Nanotube Arrays: A Noble-Metal Free Photocatalyst for Hydrogen Evolution
Original language description
In this work, NiCu co-catalysts on TiO2 are studied for photocatalytic hydrogen evolution. NiCu co-catalyst films are deposited at room temperature by argon plasma sputtering on high aspect-ratio anodic TiO2 nanotubes. To tune the Ni : Cu atomic ratio, alloys of various compositions were used as sputtering targets. Such co-catalyst films are found to be amorphous with small nanocrystalline domains. A series of parameters is investigated, i. e., i) Ni : Cu relative ratio in the sputtered films, ii) NiCu film thickness, and iii) thickness of the TiO2 nanotube layers. The highest photocatalytic activity is obtained with 8 μm long TiO2 nanotubes, sputter-coated with a 10 nm-thick NiCu films with a 1 : 1 Ni : Cu atomic ratio. This photocatalyst reaches a stable hydrogen evolution rate of 186 μL h−1 cm−2, 4.6 and 3 times higher than that of Ni- and Cu-TiO2, respectively, demonstrating a synergistic co-catalytic effect of Ni and Cu in the alloy co-catalyst film.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
21002 - Nano-processes (applications on nano-scale); (biomaterials to be 2.9)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ChemCatChem
ISSN
1867-3880
e-ISSN
1867-3899
Volume of the periodical
14
Issue of the periodical within the volume
23
Country of publishing house
DE - GERMANY
Number of pages
10
Pages from-to
"nečíslováno"
UT code for WoS article
000881730400001
EID of the result in the Scopus database
2-s2.0-85141788311