Atomically Dispersed Cerium Sites Immobilized on Vanadium Vacancies of Monolayer Nickel-Vanadium Layered Double Hydroxide: Accelerating Water Splitting Kinetics
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F23%3A10253522" target="_blank" >RIV/61989100:27710/23:10253522 - isvavai.cz</a>
Result on the web
<a href="https://www.scopus.com/record/display.uri?eid=2-s2.0-85174973946&origin=resultslist&sort=plf-f&src=s&sid=881db3789ccc847267fb37586bc37fff&sot=b&sdt=cl&s=AUTHOR-NAME%28M.H.+rummeli%29&sl=25&sessionSearchId=881db3789ccc847267fb37586bc37fff&relpos=18#funding-details" target="_blank" >https://www.scopus.com/record/display.uri?eid=2-s2.0-85174973946&origin=resultslist&sort=plf-f&src=s&sid=881db3789ccc847267fb37586bc37fff&sot=b&sdt=cl&s=AUTHOR-NAME%28M.H.+rummeli%29&sl=25&sessionSearchId=881db3789ccc847267fb37586bc37fff&relpos=18#funding-details</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/adfm.202308533" target="_blank" >10.1002/adfm.202308533</a>
Alternative languages
Result language
angličtina
Original language name
Atomically Dispersed Cerium Sites Immobilized on Vanadium Vacancies of Monolayer Nickel-Vanadium Layered Double Hydroxide: Accelerating Water Splitting Kinetics
Original language description
Rational design of efficient single-atom catalysts is a potential avenue to mitigate the sluggish oxygen evolution reaction (OER) kinetics. Adopting appropriate matrixes to stabilize the single-atom active centers with the optimized geometric and electronic structure plays an essential role in enhancing catalytic activities. Herein, massive isolated Ce atoms are successfully anchored on monolayer nickel-vanadium layered double hydroxide support (Ce SAs/m-NiV LDH) via the vanadium defects trapping strategy, resulting in stabilized Ce single-atom with the maximum loading of 8.07 wt.%. Benefitting from the strong synergetic electronic interaction between Ce single atoms and monolayer NiV LDH matrix, thus-prepared catalyst possesses favorable OER (209 mV @ 10 mA cm-2) and water electrolysis performance (1.47 V @ 10 mA cm-2), surpassing other catalysts and even the commercial RuO2 catalyst. Density functional theory (DFT) calculations in combination with in situ electrochemical impedance spectroscopy analysis reveal that the immobilization of monatomic Ce can effectively narrow the band gap and strengthen the density states near the Fermi level as well as more easily adsorb the surficial OH-, leading to a lower charge transfer barrier and faster water splitting kinetics. The novel V vacancies trapped Ce single-atom catalyst is successfully constructed on the monolayer nickel-vanadium layered double hydroxide (NiV LDH). The physicochemical characterization and theoretical calculations demonstrate that the incorporation of single Ce atoms delivers a positive effect. Specifically, the synergistic effect results from the strong electronic coupling interactions between the Ce single-atom and monolayer NiV LDH matrix inducing an enhanced water electrolysis kinetics.image
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
10400 - Chemical sciences
Result continuities
Project
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Continuities
V - Vyzkumna aktivita podporovana z jinych verejnych zdroju
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Advanced Functional Materials
ISSN
1616-301X
e-ISSN
1616-3028
Volume of the periodical
2023
Issue of the periodical within the volume
16.12.2023
Country of publishing house
DE - GERMANY
Number of pages
10
Pages from-to
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UT code for WoS article
001090666200001
EID of the result in the Scopus database
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