Photosensitized Oxidation of 9,10-Dimethylanthracene on Dye-Doped Silica Composites
A series of cationic dyes, methylene blue (MB), safranin O (SF), toluidine blue (TB), and neutral red (NR), were successfully incorporated into a silica matrix by using ultrasound irradiation during the Stöber process. Several analyses were performed, including scanning dynamic light scattering (DLS...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2012/987606 |
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| author | Elim Albiter Salvador Alfaro Miguel A. Valenzuela |
| author_facet | Elim Albiter Salvador Alfaro Miguel A. Valenzuela |
| author_sort | Elim Albiter |
| collection | DOAJ |
| description | A series of cationic dyes, methylene blue (MB), safranin O (SF), toluidine blue (TB), and neutral red (NR), were successfully incorporated into a silica matrix by using ultrasound irradiation during the Stöber process. Several analyses were performed, including scanning dynamic light scattering (DLS), electron microscopy (SEM), nitrogen physisorption, FTIR spectroscopy, UV-vis, and diffuse reflectance spectroscopy. The entrapped dyes on silica were evaluated in singlet oxygen (1O2) generation under visible light irradiation, by means of the photosensitized oxidation of 9,10-dimethylanthracene (DMA). According to the results, the photocatalytic performance of the silica composites was improved, and the leakage of the dye from the particles was suppressed. Among these four different types of dye-doped silica composites, the SiO2-SF composite showed the most efficient delivery of 1O2. |
| format | Article |
| id | doaj-art-4c489eaefb1c4f07b70d331bfa5a4417 |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-4c489eaefb1c4f07b70d331bfa5a44172025-02-03T07:24:38ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2012-01-01201210.1155/2012/987606987606Photosensitized Oxidation of 9,10-Dimethylanthracene on Dye-Doped Silica CompositesElim Albiter0Salvador Alfaro1Miguel A. Valenzuela2Laboratorio Catálisis y Materiales, ESIQIE Instituto Politécnico Nacional, Zacatenco, 07738 México City, DF, MexicoLaboratorio Catálisis y Materiales, ESIQIE Instituto Politécnico Nacional, Zacatenco, 07738 México City, DF, MexicoLaboratorio Catálisis y Materiales, ESIQIE Instituto Politécnico Nacional, Zacatenco, 07738 México City, DF, MexicoA series of cationic dyes, methylene blue (MB), safranin O (SF), toluidine blue (TB), and neutral red (NR), were successfully incorporated into a silica matrix by using ultrasound irradiation during the Stöber process. Several analyses were performed, including scanning dynamic light scattering (DLS), electron microscopy (SEM), nitrogen physisorption, FTIR spectroscopy, UV-vis, and diffuse reflectance spectroscopy. The entrapped dyes on silica were evaluated in singlet oxygen (1O2) generation under visible light irradiation, by means of the photosensitized oxidation of 9,10-dimethylanthracene (DMA). According to the results, the photocatalytic performance of the silica composites was improved, and the leakage of the dye from the particles was suppressed. Among these four different types of dye-doped silica composites, the SiO2-SF composite showed the most efficient delivery of 1O2.http://dx.doi.org/10.1155/2012/987606 |
| spellingShingle | Elim Albiter Salvador Alfaro Miguel A. Valenzuela Photosensitized Oxidation of 9,10-Dimethylanthracene on Dye-Doped Silica Composites International Journal of Photoenergy |
| title | Photosensitized Oxidation of 9,10-Dimethylanthracene on Dye-Doped Silica Composites |
| title_full | Photosensitized Oxidation of 9,10-Dimethylanthracene on Dye-Doped Silica Composites |
| title_fullStr | Photosensitized Oxidation of 9,10-Dimethylanthracene on Dye-Doped Silica Composites |
| title_full_unstemmed | Photosensitized Oxidation of 9,10-Dimethylanthracene on Dye-Doped Silica Composites |
| title_short | Photosensitized Oxidation of 9,10-Dimethylanthracene on Dye-Doped Silica Composites |
| title_sort | photosensitized oxidation of 9 10 dimethylanthracene on dye doped silica composites |
| url | http://dx.doi.org/10.1155/2012/987606 |
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