Title
Plasma-assisted synthesis of Ag/ZnO nanocomposites : first example of photo-induced <tex>$H_{2}$</tex> production and sensingPlasma-assisted synthesis of Ag/ZnO nanocomposites : first example of photo-induced <tex>$H_{2}$</tex> production and sensing
Author
Faculty/Department
Faculty of Sciences. Physics
Research group
Electron microscopy for materials research (EMAT)
Publication type
article
Publication
Oxford,
Subject
Physics
Source (journal)
International journal of hydrogen energy. - Oxford
Volume/pages
36(2011):24, p. 15527-15537
ISSN
0360-3199
ISI
000297089700006
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Ag/ZnO nanocomposites were developed by a plasma-assisted approach. The adopted strategy exploits the advantages of Plasma Enhanced-Chemical Vapor Deposition (PE-CVD) for the growth of columnar ZnO arrays on Si(100) and Al2O3 substrates, in synergy with the infiltration power of the Radio Frequency (RF)-sputtering technique for the subsequent dispersion of different amounts of Ag nanoparticles (NPs). The resulting composites, both as-prepared and after annealing in air, were thoroughly characterized with particular attention on their morphological organization, structure and composition. For the first time, the above systems have been used as catalysts in the production of hydrogen by photo-reforming of alcoholic solutions, yielding a stable H2 evolution even by the sole use of simulated solar radiation. In addition, Ag/ZnO nanocomposites presented an excellent response in the gas-phase detection of H2, opening attractive perspectives for advanced technological applications.
E-info
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