The Hallmarks of Copper Single Atom Catalysts in Direct Alcohol Fuel Cells and Electrochemical CO2 Fixation
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F21%3A10247935" target="_blank" >RIV/61989100:27640/21:10247935 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/61989592:15640/21:73607356
Výsledek na webu
<a href="https://onlinelibrary.wiley.com/doi/10.1002/admi.202001822" target="_blank" >https://onlinelibrary.wiley.com/doi/10.1002/admi.202001822</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/admi.202001822" target="_blank" >10.1002/admi.202001822</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
The Hallmarks of Copper Single Atom Catalysts in Direct Alcohol Fuel Cells and Electrochemical CO2 Fixation
Popis výsledku v původním jazyce
Single-atom catalysts (SACs) are highly enviable to exploit the utmost utilization of metallic catalysts; their efficiency by utilizing nearly all atoms to often exhibit high catalytic performances. To architect the isolated single atom on an ideal solid support with strong coordination has remained a crucial trial. Herein, graphene functionalized with nitrile groups (cyanographene) as an ideal support to immobilize isolated copper atoms G(CN)-Cu with strong coordination is reported. The precisely designed mixed-valence single atom copper (G(CN)-Cu) catalysts deliver exceptional conversions for electrochemical methanol oxidation (MOR) and CO2 reduction (CO2RR) targeting a "closed carbon cycle." An onset of MOR and CO2RR are obtained to be ALMOST EQUAL TO0.4 V and ALMOST EQUAL TOMINUS SIGN 0.7 versus Ag/AgCl, respectively, with single active sites located in an unsaturated coordination environment, it being the most active Cu sites for both studied reactions. Moreover, G(CN)-Cu exhibited significantly lower resistivity and higher current density toward MOR and CO2RR than observed for reference catalysts. (C) 2021 The Authors. Advanced Materials Interfaces published by Wiley-VCH GmbH
Název v anglickém jazyce
The Hallmarks of Copper Single Atom Catalysts in Direct Alcohol Fuel Cells and Electrochemical CO2 Fixation
Popis výsledku anglicky
Single-atom catalysts (SACs) are highly enviable to exploit the utmost utilization of metallic catalysts; their efficiency by utilizing nearly all atoms to often exhibit high catalytic performances. To architect the isolated single atom on an ideal solid support with strong coordination has remained a crucial trial. Herein, graphene functionalized with nitrile groups (cyanographene) as an ideal support to immobilize isolated copper atoms G(CN)-Cu with strong coordination is reported. The precisely designed mixed-valence single atom copper (G(CN)-Cu) catalysts deliver exceptional conversions for electrochemical methanol oxidation (MOR) and CO2 reduction (CO2RR) targeting a "closed carbon cycle." An onset of MOR and CO2RR are obtained to be ALMOST EQUAL TO0.4 V and ALMOST EQUAL TOMINUS SIGN 0.7 versus Ag/AgCl, respectively, with single active sites located in an unsaturated coordination environment, it being the most active Cu sites for both studied reactions. Moreover, G(CN)-Cu exhibited significantly lower resistivity and higher current density toward MOR and CO2RR than observed for reference catalysts. (C) 2021 The Authors. Advanced Materials Interfaces published by Wiley-VCH GmbH
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10400 - Chemical sciences
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
2021
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Advanced Materials Interfaces
ISSN
2196-7350
e-ISSN
—
Svazek periodika
8
Číslo periodika v rámci svazku
8
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
11
Strana od-do
2001822
Kód UT WoS článku
000605169400001
EID výsledku v databázi Scopus
2-s2.0-85099037905