Fe-Doping induced divergent growth of Ni-Fe alloy nanoparticles for enhancing the electrocatalytic oxygen reduction
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F21%3A10442270" target="_blank" >RIV/00216208:11310/21:10442270 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=bmAt8VV6mN" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=bmAt8VV6mN</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/d1cy00668a" target="_blank" >10.1039/d1cy00668a</a>
Alternative languages
Result language
angličtina
Original language name
Fe-Doping induced divergent growth of Ni-Fe alloy nanoparticles for enhancing the electrocatalytic oxygen reduction
Original language description
Non-noble metal Ni and its alloy based catalysts are promising alternatives to Pt catalysts for the oxygen reduction reaction (ORR). Control of the exposed crystallographic facets of catalysts is an efficient way of tailoring their activity, but the practicability and the investigation of the underlying mechanisms of this protocol still present challenges for Ni and its alloys. Herein, we succeeded in preparing Ni-Fe alloy nanoparticles (NPs) with different exposed facets via pyrolysis of Fe-substituted Ni-bispyrazolate metal-organic frameworks. Fe-doping induces divergent growth in the two kinds of NPs to afford separate (111)- and (200)-faceted NPs with distinguishable diameters. Density functional theory (DFT) calculations were used to simulate the ORR process on the two facets of the Ni-Fe NPs, revealing that the (200)-faceted NPs show the highest activity due to their large compressive strain effect. The experimental results confirm the enhanced ORR activity of the derived catalysts and superior performance of assembled Zn-air batteries.
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
10403 - Physical chemistry
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Catalysis: Science and Technology
ISSN
2044-4753
e-ISSN
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Volume of the periodical
11
Issue of the periodical within the volume
15
Country of publishing house
GB - UNITED KINGDOM
Number of pages
9
Pages from-to
5171-5179
UT code for WoS article
000670228000001
EID of the result in the Scopus database
2-s2.0-85112369024