Influence of vanadium nanoclusters in hydrogen uptake using hybrid nanostructured materials

In this work, we report the synthesis and characterization of vanadium oxide nanoclusters (V 2 O 5 ) supported in silica nanostructured material (SBA-15) and nanostructured carbon (CMK-3). This material is promising in hydrogen adsorption and storage application for energy harvesting. The materials...

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Bibliographic Details
Published in:Journal of porous materials 2019-08, Vol.26 (4), p.951-959
Main Authors: Juárez, Juliana M., Gómez Costa, Marcos B., Martínez, María L., Anunziata, Oscar A.
Format: Article
Language:English
Subjects:
Adsorption
Catalysis
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Electrons
Energy harvesting
Energy storage
Hydrogen
Hydrogen storage
Nanoclusters
Nanostructured materials
Photoelectrons
Physical Chemistry
Silicon dioxide
Synthesis
Transmission electron microscopy
Vanadium oxides
X-ray diffraction
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Summary:In this work, we report the synthesis and characterization of vanadium oxide nanoclusters (V 2 O 5 ) supported in silica nanostructured material (SBA-15) and nanostructured carbon (CMK-3). This material is promising in hydrogen adsorption and storage application for energy harvesting. The materials with vanadium oxide nanoclusters (V x O y -SBA-15 and V x O y -CMK-3) were successfully synthesized and characterized by X-ray diffraction, textural properties, UV–Vis-DRS, X-ray photoelectron spectroscopy, temperature programmed reduction and transmission electron microscopy analyses. V x O y -SBA-15 and V x O y -CMK-3 improved significantly the H 2 storage behavior (1.33 wt% and 3.43 wt% at 77 K and 10 bar) compared with their respective supports SBA-15 and CMK-3. The materials synthesized are promising in hydrogen uptake by weak link forces (physisorption). A mechanism of hydrogen adsorption was proposed and V 5+ cation roll in hydrogen uptake was discussed.
ISSN:1380-2224
1573-4854
DOI:10.1007/s10934-018-0689-x