Multimetallic Metasurfaces for Enhanced Electrocatalytic Oxidations in Direct Alcohol Fuel Cells
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15640%2F22%3A73618502" target="_blank" >RIV/61989592:15640/22:73618502 - isvavai.cz</a>
Výsledek na webu
<a href="https://onlinelibrary.wiley.com/doi/10.1002/lpor.202200137" target="_blank" >https://onlinelibrary.wiley.com/doi/10.1002/lpor.202200137</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/lpor.202200137" target="_blank" >10.1002/lpor.202200137</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Multimetallic Metasurfaces for Enhanced Electrocatalytic Oxidations in Direct Alcohol Fuel Cells
Popis výsledku v původním jazyce
Plasmonic metasurfaces enable unprecedented manipulation of light by using periodic arrangement of resonant unit cells or nanoantennas. Here, multimetallic metasurfaces made of self-standing Ni/Au-Pt nanostructured films are shown to significantly enhance an electrocatalytic oxidation reaction employed in direct alcohol fuel cells. The Ni/Au metasurfaces support photonic and plasmonic modes, which are leveraged for the site-selective deposition of Pt electrocatalysts within the electromagnetic hot spots, where their reactivity can be strongly increased. The enhanced electrocatalytic activity for the methanol oxidation reaction (MOR) is primarily attributed to electronic effects due to the excitation of hot charge carriers and plasmonic near fields, as supported by electromagnetic simulations and kinetic isotopic experiments. Wavelength-dependent photoelectrochemical investigations suggest that Ni/Au-Pt metasurfaces enhances MOR over a broad spectral range and favors different light-induced reaction mechanisms depending on the selected energy window.
Název v anglickém jazyce
Multimetallic Metasurfaces for Enhanced Electrocatalytic Oxidations in Direct Alcohol Fuel Cells
Popis výsledku anglicky
Plasmonic metasurfaces enable unprecedented manipulation of light by using periodic arrangement of resonant unit cells or nanoantennas. Here, multimetallic metasurfaces made of self-standing Ni/Au-Pt nanostructured films are shown to significantly enhance an electrocatalytic oxidation reaction employed in direct alcohol fuel cells. The Ni/Au metasurfaces support photonic and plasmonic modes, which are leveraged for the site-selective deposition of Pt electrocatalysts within the electromagnetic hot spots, where their reactivity can be strongly increased. The enhanced electrocatalytic activity for the methanol oxidation reaction (MOR) is primarily attributed to electronic effects due to the excitation of hot charge carriers and plasmonic near fields, as supported by electromagnetic simulations and kinetic isotopic experiments. Wavelength-dependent photoelectrochemical investigations suggest that Ni/Au-Pt metasurfaces enhances MOR over a broad spectral range and favors different light-induced reaction mechanisms depending on the selected energy window.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
21002 - Nano-processes (applications on nano-scale); (biomaterials to be 2.9)
Návaznosti výsledku
Projekt
Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2022
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Laser & Photonics Reviews
ISSN
1863-8880
e-ISSN
1863-8899
Svazek periodika
16
Číslo periodika v rámci svazku
7
Stát vydavatele periodika
DE - Spolková republika Německo
Počet stran výsledku
10
Strana od-do
"nečíslováno"
Kód UT WoS článku
000788365900001
EID výsledku v databázi Scopus
2-s2.0-85128957108