Silver Doped Titania Materials on Clay Support for Enhanced Visible Light Photocatalysis
| Autor: | Nguyen Thi Dieu Cam, Bui Duy Cam, Dao Thanh Phuong, Nguyen Van Noi, Pham Thanh Dong |
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| Rok vydání: | 2011 |
| Předmět: |
Materials science
Doping Inorganic chemistry Bioengineering Surfaces and Interfaces Condensed Matter Physics Silver nanoparticle Surfaces Coatings and Films law.invention chemistry.chemical_compound Silver nitrate chemistry Chemical engineering Mechanics of Materials law Titanium dioxide Photocatalysis Phenol Calcination Biotechnology Visible spectrum |
| Zdroj: | e-Journal of Surface Science and Nanotechnology. 9:454-457 |
| ISSN: | 1348-0391 |
| DOI: | 10.1380/ejssnt.2011.454 |
| Popis: | (Received 16 December 2009; Accepted 27 June 2010; Published 27 December 2011)This paper presents a study on the development of silver doped titania materials on clay support and theirapplication for phenol photooxidation. Silver was incorporated by direct calcination of the sol-gel titania withsilver nitrate added in various amounts. The silver ion was reduced during calcination of the sol-gel material viadecomposition of silver nitrate. The structural characters of materials were studied by X-ray diffraction (XRD),diffuse reflectance spectra (DRS). The photocatalytic activity of silver doped titania photocatalyst and that of thismixture on clay support for phenol degradation were examined. The addition of increasing amounts of silver, forbatches of samples, significantly increases the rate of degradation of phenol. This is attributed to the increasingvisible absorption capacity due to the presence of silver nanoparticles. The better separation between electronsand holes on the modified TiO |
| Databáze: | OpenAIRE |
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