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Hydrogen release from a single water molecule on V n + (3 ≤ n ≤ 30)
- Source :
- Communications Chemistry, Vol 3, Iss 1, Pp 1-10 (2020)
- Publication Year :
- 2020
- Publisher :
- Nature Publishing Group, 2020.
-
Abstract
- Water and its interactions with metals are closely bound up with human life, and the reactivity of metal clusters with water is of fundamental importance for the understanding of hydrogen generation. Here a prominent hydrogen evolution reaction (HER) of single water molecule on vanadium clusters Vn+ (3 ≤ n ≤ 30) is observed in the reaction of cationic vanadium clusters with water at room temperature. The combined experimental and theoretical studies reveal that the wagging vibrations of a V-OH group give rise to readily formed V-O-V intermediate states on Vn+ (n ≥ 3) clusters and allow the terminal hydrogen to interact with an adsorbed hydrogen atom, enabling hydrogen release. The presence of three metal atoms reduces the energy barrier of the rate-determining step, giving rise to an effective production of hydrogen from single water molecules. This mechanism differs from dissociative chemisorption of multiple water molecules on aluminium cluster anions, which usually proceeds by dissociative chemisorption of at least two water molecules at multiple surface sites followed by a recombination of the adsorbed hydrogen atoms. Metal clusters are known to catalyze hydrogen evolution from water, but reaction mechanisms and reactivities are still not fully understood. Here, mass spectrometry of cationic vanadium clusters reacting with water vapor shows significant hydrogen evolution reactions for V3+, V5+ and V9+ that point to a hydrogen release mechanism from the transition metal cluster cations.
- Subjects :
- Hydrogen
Chemistry, Multidisciplinary
Vanadium
chemistry.chemical_element
02 engineering and technology
010402 general chemistry
Photochemistry
01 natural sciences
Biochemistry
lcsh:Chemistry
Transition metal
H-2 ELIMINATION
AL CLUSTERS
TRANSITION-METAL
Materials Chemistry
Cluster (physics)
Environmental Chemistry
Molecule
Reactivity (chemistry)
2-STATE REACTIVITY
ZETA VALENCE QUALITY
Hydrogen production
BASIS-SETS
ELECTRONIC-ENERGY DEPENDENCE
Science & Technology
Chemistry
GUIDED ION-BEAM
General Chemistry
Hydrogen atom
021001 nanoscience & nanotechnology
0104 chemical sciences
lcsh:QD1-999
Physical Sciences
CATIONIC VANADIUM CLUSTERS
0210 nano-technology
ALUMINUM CLUSTERS
Subjects
Details
- Language :
- English
- ISSN :
- 23993669
- Volume :
- 3
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Communications Chemistry
- Accession number :
- edsair.doi.dedup.....f785695697a016e3a4082441638213b6