PL EN


Preferences help
enabled [disable] Abstract
Number of results
2012 | 121 | 1 | 208-210
Article title

The Influence of the Au Nanoparticles Dimension on the Photocatalytic Performances of TiO_2-Au Porous Composites

Content
Title variants
Languages of publication
EN
Abstracts
EN
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.
Keywords
Year
Volume
121
Issue
1
Pages
208-210
Physical description
Dates
published
2012-01
References
  • 1. D. Beydoun, R. Amal, G. Low, S. McEvoy, Nanoparticle Res. 1, 439 (1999)
  • 2. N. Hüsing, U. Schubert, Angew. Chem. Int. Ed. 37, 22 (1998)
  • 3. V. Subramanian, E.E. Wolf, P.V. Kamat, J. Am. Chem. Soc. 126, 4943 (2004)
  • 4. S. Sakthivel, M.V. Shankar, M. Palanichamy, B. Arabindoo, D.W. Bahnemann, V. Murugesan, Water Res. 38, 3001 (2004)
  • 5. U. Cernigoj, U. Lavrencic-Stangar, P. Tresbe, U.O. Krasovec, S. Gross, Thin Solid Films 495, 327 (2006)
  • 6. A.M. Luis, M.C. Neves, M.H. Mendonca, O.C. Monteiro, Mater. Chem. Phys. 125, 20 (2011)
  • 7. H. Li, G. Zhao, Z. Chen, B. Song, G. Han, J. Am. Ceram. Soc. 93, 445 (2010)
  • 8. L. Baia, L. Diamandescu, L. Barbu-Tudoran, A. Peter, G. Melinte, V. Danciu, M. Baia, J. Alloys Comp. 509, 2672 (2011)
  • 9. H. Liu, L. Zhang, N.A. Seaton, Chem. Eng. Sci. 47, 4393 (1992)
Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv121n164kz
Identifiers
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.