Enhancing Alkaline Hydrogen Evolution Reaction on Ru-Decorated TiO2 Nanotube Layers: Synergistic Role of Ti3+, Ru Single Atoms and Ru Nanoparticles
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F25%3A39921866" target="_blank" >RIV/00216275:25310/25:39921866 - isvavai.cz</a>
Výsledek na webu
<a href="https://doi.org/10.1002/eem2.12864" target="_blank" >https://doi.org/10.1002/eem2.12864</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/eem2.12864" target="_blank" >10.1002/eem2.12864</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Enhancing Alkaline Hydrogen Evolution Reaction on Ru-Decorated TiO2 Nanotube Layers: Synergistic Role of Ti3+, Ru Single Atoms and Ru Nanoparticles
Popis výsledku v původním jazyce
Synergistic interplays involving multiple active centers originating from TiO2 nanotube layers (TNT) and ruthenium (Ru) species comprising of both single atoms (SAs) and nanoparticles (NPs) augment the alkaline hydrogen evolution reaction (HER) by enhancing Volmer kinetics from rapid water dissociation and improving Tafel kinetics from efficient H* desorption. Atomic Layer Deposition of Ru with 50 process cycles results in a mixture of Ru SAs and 2.8 ± 0.4 nm NPs present on TNT layers, and it emerges with the highest HER activity among all the electrodes synthesized. A detailed study of the Ti and Ru species using different high-resolution techniques confirmed the presence of Ti3+ states and the coexistence of Ru SAs and NPs. With insights from literature, the role of Ti3+, appropriate work functions of TNT layers and Ru, and the synergistic effect of Ru SAs and Ru NPs in improving the performance of alkaline HER was elaborated and justified. The aforementioned characteristics led to a remarkable performance by having 9 mV onset potentials and 33 mV dec-1 of Tafel slopes and a higher turnover frequency of 1.72 H2 s-1 at 30 mV. Besides, a notable stability from 28 h staircase chronopotentiometric measurements for TNT@Ru surpasses TNT@Pt in comparison.
Název v anglickém jazyce
Enhancing Alkaline Hydrogen Evolution Reaction on Ru-Decorated TiO2 Nanotube Layers: Synergistic Role of Ti3+, Ru Single Atoms and Ru Nanoparticles
Popis výsledku anglicky
Synergistic interplays involving multiple active centers originating from TiO2 nanotube layers (TNT) and ruthenium (Ru) species comprising of both single atoms (SAs) and nanoparticles (NPs) augment the alkaline hydrogen evolution reaction (HER) by enhancing Volmer kinetics from rapid water dissociation and improving Tafel kinetics from efficient H* desorption. Atomic Layer Deposition of Ru with 50 process cycles results in a mixture of Ru SAs and 2.8 ± 0.4 nm NPs present on TNT layers, and it emerges with the highest HER activity among all the electrodes synthesized. A detailed study of the Ti and Ru species using different high-resolution techniques confirmed the presence of Ti3+ states and the coexistence of Ru SAs and NPs. With insights from literature, the role of Ti3+, appropriate work functions of TNT layers and Ru, and the synergistic effect of Ru SAs and Ru NPs in improving the performance of alkaline HER was elaborated and justified. The aforementioned characteristics led to a remarkable performance by having 9 mV onset potentials and 33 mV dec-1 of Tafel slopes and a higher turnover frequency of 1.72 H2 s-1 at 30 mV. Besides, a notable stability from 28 h staircase chronopotentiometric measurements for TNT@Ru surpasses TNT@Pt in comparison.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
20501 - Materials engineering
Návaznosti výsledku
Projekt
<a href="/cs/project/GX23-08019X" target="_blank" >GX23-08019X: Jednoatomové 2D fotokatalyzátory</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2025
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Energy and Environmental Materials
ISSN
2575-0348
e-ISSN
2575-0356
Svazek periodika
8
Číslo periodika v rámci svazku
3
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
8
Strana od-do
"e12864"
Kód UT WoS článku
001392688600001
EID výsledku v databázi Scopus
2-s2.0-105002652754