info:eu-repo/semantics/article
Influence of vanadium nanoclusters in hydrogen uptake using hybrid nanostructured materials
Fecha
2019-08Registro en:
Juarez, Juliana; Gómez Costa, Marcos Bruno; Martínez, María L.; Anunziata, Oscar Alfredo; Influence of vanadium nanoclusters in hydrogen uptake using hybrid nanostructured materials; Springer; Journal of Porous Materials; 26; 4; 8-2019; 951-959
1380-2224
1573-4854
CONICET Digital
CONICET
Autor
Juarez, Juliana
Gómez Costa, Marcos Bruno
Martínez, María L.
Anunziata, Oscar Alfredo
Resumen
In this work, we report the synthesis and characterization of vanadium oxide nanoclusters (V2O5) 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 (VxOy-SBA-15 and VxOy-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. VxOy-SBA-15 and VxOy-CMK-3 improved significantly the H2 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 V5+ cation roll in hydrogen uptake was discussed.