Study of Band Gap of Silver Nanoparticles—Titanium Dioxide Nanocomposites
The optical and chemical properties of Ag/TiO2 nanocomposites were investigated to explore the possibilities of incorporating these new materials in Gratzel photoelectrochemical cells. The nanocomposites were obtained doping TiO2, in both allotropic species anatase and rutile, with silver nanopartic...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2014/589707 |
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| author | P. Barone F. Stranges M. Barberio D. Renzelli A. Bonanno F. Xu |
| author_facet | P. Barone F. Stranges M. Barberio D. Renzelli A. Bonanno F. Xu |
| author_sort | P. Barone |
| collection | DOAJ |
| description | The optical and chemical properties of Ag/TiO2 nanocomposites were investigated to explore the possibilities of incorporating these new materials in Gratzel photoelectrochemical cells. The nanocomposites were obtained doping TiO2, in both allotropic species anatase and rutile, with silver nanoparticles (grown by laser ablation process). X-ray photoelectron data indicate the absence of Ag-Ti chemical bonds, while measurements of photoluminescence and optical absorbance in UV-visible range show a quench in photoluminescence emission of about 50% and an increase in visible absorbance of about 20%. Measurements of optical band gap, obtained by Tauc’s equation, indicate a variation of about 1.6 eV. |
| format | Article |
| id | doaj-art-f7745c5c29a94d749d093569d968ebf3 |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-f7745c5c29a94d749d093569d968ebf32025-02-03T01:20:14ZengWileyJournal of Chemistry2090-90632090-90712014-01-01201410.1155/2014/589707589707Study of Band Gap of Silver Nanoparticles—Titanium Dioxide NanocompositesP. Barone0F. Stranges1M. Barberio2D. Renzelli3A. Bonanno4F. Xu5Physics Department, University of Calabria, Via Bucci 31C, 87036 Rende, ItalyPhysics Department, University of Calabria, Via Bucci 31C, 87036 Rende, ItalyPhysics Department, University of Calabria, Via Bucci 31C, 87036 Rende, ItalyPhysics Department, University of Calabria, Via Bucci 31C, 87036 Rende, ItalyPhysics Department, University of Calabria, Via Bucci 31C, 87036 Rende, ItalyPhysics Department, University of Calabria, Via Bucci 31C, 87036 Rende, ItalyThe optical and chemical properties of Ag/TiO2 nanocomposites were investigated to explore the possibilities of incorporating these new materials in Gratzel photoelectrochemical cells. The nanocomposites were obtained doping TiO2, in both allotropic species anatase and rutile, with silver nanoparticles (grown by laser ablation process). X-ray photoelectron data indicate the absence of Ag-Ti chemical bonds, while measurements of photoluminescence and optical absorbance in UV-visible range show a quench in photoluminescence emission of about 50% and an increase in visible absorbance of about 20%. Measurements of optical band gap, obtained by Tauc’s equation, indicate a variation of about 1.6 eV.http://dx.doi.org/10.1155/2014/589707 |
| spellingShingle | P. Barone F. Stranges M. Barberio D. Renzelli A. Bonanno F. Xu Study of Band Gap of Silver Nanoparticles—Titanium Dioxide Nanocomposites Journal of Chemistry |
| title | Study of Band Gap of Silver Nanoparticles—Titanium Dioxide Nanocomposites |
| title_full | Study of Band Gap of Silver Nanoparticles—Titanium Dioxide Nanocomposites |
| title_fullStr | Study of Band Gap of Silver Nanoparticles—Titanium Dioxide Nanocomposites |
| title_full_unstemmed | Study of Band Gap of Silver Nanoparticles—Titanium Dioxide Nanocomposites |
| title_short | Study of Band Gap of Silver Nanoparticles—Titanium Dioxide Nanocomposites |
| title_sort | study of band gap of silver nanoparticles titanium dioxide nanocomposites |
| url | http://dx.doi.org/10.1155/2014/589707 |
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