Bifunctional Ru-Cluster-Decorated Co3 B-Co(OH)2 Hybrid Catalyst Synergistically Promotes NaBH4 Hydrolysis and Water Splitting.
Chemistry
; 29(13): e202203207, 2023 Mar 01.
Article
em En
| MEDLINE
| ID: mdl-36469422
ABSTRACT
Developing a highly efficient bifunctional catalyst for hydrolysis of metal hydrides and spontaneous hydrogen evolution reaction (HER) is essential for substituting conventional fuels for H2 production. Herein, Ru-cluster-modified Co3 B-Co(OH)2 supported on nickel foam (Ru/Co3 B-Co(OH)2 @NF) is constructed by electroless deposition, calcination and chemical reduction. The catalyst exhibits an excellent hydrogen generation rate (HGR) of 4989â
mL min-1 g c a t a l y s t - 1 ${{{\rm g}}_{catalyst}^{-1}}$ and good reusability, superior to most previously reported catalysts. Besides, Ru/Co3 B-Co(OH)2 @NF displays a prominent hydrogen evolution reaction catalytic capability with a low overpotential of 153.0â
mV at 100â
mA cm-2 (50.5â
mV at 10â
mA cm-2 ), a small Tafel slope of 40.0â
mV dec-1 and long-term stability (100â
h@10 mA cm-2 ) in 1.0â
M KOH. The excellent catalytic H2 generation capacity benefits from the rapid charge transfer promoted by metallic Co3 B, the synergistic catalytic effect of Co3 B-Co(OH)2 and Ru clusters, and the unique composite structure favorable for solute transport and gas emission.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Chemistry
Assunto da revista:
QUIMICA
Ano de publicação:
2023
Tipo de documento:
Article