Title
ZnO nanoparticles supported on mesoporous MCM-41 and SBA-15: a comparative physicochemical and photocatalytic studyZnO nanoparticles supported on mesoporous MCM-41 and SBA-15: a comparative physicochemical and photocatalytic study
Author
Faculty/Department
Faculty of Sciences. Chemistry
Research group
Laboratory of adsorption and catalysis
Department of Chemistry
Publication type
article
Publication
London,
Subject
Physics
Chemistry
Source (journal)
Journal of materials science. - London
Volume/pages
45(2010):21, p. 5786-5794
ISSN
0022-2461
ISI
000281703400009
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
A simple solvothermal impregnation method was used to prepare ZnO nanoparticles supported on MCM-41 and SBA-15. X-ray powder diffraction, N2 adsorptiondesorption, Electron Probe Micro Analysis (EPMA), and UVvis spectroscopy were used to characterize the prepared materials. The influence of the ZnO loading of different supports on the structural characteristics and the photocatalytic activity toward degradation of methylene blue in water under ultraviolet irradiation were investigated. Wide angle X-ray diffraction and UVvis Diffuse Reflectance confirmed the existence of ZnO phase. A much smaller influence of impregnation with ethanolic zinc salt solution on the porosity was observed for SBA-15 compared with MCM-41. Finally, the adsorption and photocatalytic activity of the ZnO/mesoporous materials depend on porous characteristics of the support materials.
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