Journal
Article title
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Abstracts
The influence of Au nanoparticles dimension on the photocatalytic performances of the TiO_2 aerogels-Au composites was evaluated. Structural and morphological peculiarities of the TiO_2 aerogel, unloaded and loaded with 5 and 22 nm Au nanoparticles, were studied by transmission electron microscopy technique, X-ray diffraction and N_2-sorption measurements. UV-Vis diffuse reflectance measurements were performed to determine the band gap energies. The photocatalytic activity was evaluated by monitoring the salicylic acid photodegradation. It was found that the Au nanoparticles promote the anatase phase crystallization and produce the decrease of the specific surface area and band gap energy values. The porous composite with the smallest Au nanoparticles dimension exhibits the best photocatalytic performances.
Discipline
- 68.37.Lp: Transmission electron microscopy (TEM)
- 82.50.Hp: Processes caused by visible and UV light
- 82.80.Ej: X-ray, Mössbauer, and other γ-ray spectroscopic analysis methods
- 81.07.Wx: Nanopowders
- 81.05.Rm: Porous materials; granular materials(for granular superconductors, see 74.81.Bd)
- 82.65.+r: Surface and interface chemistry; heterogeneous catalysis at surfaces(for temporal and spatial patterns in surface reactions, see 82.40.Np; see also 82.45.Jn Surface structure, reactivity and catalysis in electrochemistry; see also 68.43.-h Chemisorption/physisorption: adsorbates on surfaces)
Journal
Year
Volume
Issue
Pages
208-210
Physical description
Dates
published
2012-01
Contributors
author
- Faculty of Physics, Babes-Bolyai University, M. Kogalniceanu 1, 400084 Cluj-Napoca, Romania
author
- Faculty of Physics, Babes-Bolyai University, M. Kogalniceanu 1, 400084 Cluj-Napoca, Romania
author
- Faculty of Physics, Babes-Bolyai University, M. Kogalniceanu 1, 400084 Cluj-Napoca, Romania
author
- Faculty of Physics, Babes-Bolyai University, M. Kogalniceanu 1, 400084 Cluj-Napoca, Romania
author
- Faculty of Physics, Babes-Bolyai University, M. Kogalniceanu 1, 400084 Cluj-Napoca, Romania
author
- National Institute of Materials Physics, Atomistilor 105 bis, P.O. Box MG. 7, 77125 Bucharest, Romania
author
- National Institute of Materials Physics, Atomistilor 105 bis, P.O. Box MG. 7, 77125 Bucharest, Romania
author
- Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, A. Janos 11, 400028 Cluj-Napoca, Romania
author
- Faculty of Biology and Geology, Babes-Bolyai University, Clinicilor 5-7, 400006 Cluj-Napoca, Romania
author
- Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, A. Janos 11, 400028 Cluj-Napoca, Romania
author
- Faculty of Physics, Babes-Bolyai University, M. Kogalniceanu 1, 400084 Cluj-Napoca, Romania
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv121n164kz