Published July 31, 2017 | Version v1
Journal article Metadata-only

Metal-loaded SBA-16-like silica – Correlation between basicity and affinity towards hydrogen

Creators

  • 1. Nanoqam, Department of Chemistry, University of Quebec at Montreal, H3C3P8 (Canada)
  • 2. Department of Materials Engineering, University of Science and Technology, El M'naouer, BP 1505, Oran (Algeria)
  • 3. Unité de recherche, Electrochimie, Matériaux et Environnement, Faculté des Sciences de Gabès, Université de Gabès, Cité Erriadh, 6072 Gabès (Tunisia)
  • 4. Lqamb, Laboratório de Química Analítica Ambiental, Faculdade de Química, Pontifícia Universidade Católica do Rio Grande do Sul (Brazil)
  • 5. Laboratory of Materials Chemistry L.C.M, University of Oran1 Ahmed Ben Bella, BP 1524, El-Mnaouer, 31000 Oran (Algeria)

Description

Highlights: • Metal dispersion in longitudinal channels confers adsorption properties to SBA-16. • Both Fe0-NPs and Cu0-NPs seem to be responsible of this effect. • Effect of the repetitive adsorption-desorption cycles on CO2 and water sorption. • Hydrogen storage on the functionalized materials. - Abstract: Nanoparticles of Cuo (CuNPs) and Feo (FeNPs) were dispersed in SBA-16-like silica, resulting metal-loaded materials (Cu-SBA-16 and Fe-SBA-16) with improved affinity towards hydrogen. Electron microscopy and X-ray diffraction showed that MNP dispersion occurs mainly inside SBA-16 channels. MNP incorporation was found to confer affinity to the silica surface, since higher CO2 retention capacity (CRC) was registered Cu/SBA-16 and Fe/SBA-16. This was accompanied by a significant improvement of the affinity towards hydrogen, as supported by hydrogen adsorption tests. This was explained in terms of strong hydrogen interaction with MNP and lattice oxygen atoms. The results reported herein open new prospects for SBA-16 as potential adsorbents for hydrogen storage.

Availability note (English)

Available from http://dx.doi.org/10.1016/j.apsusc.2017.03.165

Additional details

Identifiers

DOI
10.1016/j.apsusc.2017.03.165;
PII
S0169-4332(17)30846-2;

Publishing Information

Journal Title
Applied Surface Science
Journal Volume
411
Journal Page Range
p. 476-486
ISSN
0169-4332
CODEN
ASUSEE

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
48078251
Subject category
S77: NANOSCIENCE AND NANOTECHNOLOGY;
Descriptors DEI
ADSORBENTS; ADSORPTION; CAPACITY; CARBON DIOXIDE; COPPER; CORRELATIONS; DESORPTION; DISPERSIONS; HYDROGEN; HYDROGEN STORAGE; IRON; MANGANESE PHOSPHIDES; NANOPARTICLES; RETENTION; SURFACES; WATER; X-RAY DIFFRACTION
Descriptors DEC
CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; COHERENT SCATTERING; DIFFRACTION; ELEMENTS; HYDROGEN COMPOUNDS; MANGANESE COMPOUNDS; METALS; NONMETALS; OXIDES; OXYGEN COMPOUNDS; PARTICLES; PHOSPHIDES; PHOSPHORUS COMPOUNDS; PNICTIDES; SCATTERING; SORPTION; STORAGE; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS

Optional Information

Copyright
Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.