Influence of the synthesis conditions on the photoluminescence of silica gels
The photoluminescence spectra of silica xerogel samples synthesized with ethanol as solvent and xerogel where the ethanol was exchanged by water before drying are reported. In addition, the photoluminescence spectrum of a silica cryogel synthesized with tert-butanol as solvent was investigated. The...
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| Format: | Article |
| Language: | English |
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Serbian Chemical Society
2003-12-01
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| Series: | Journal of the Serbian Chemical Society |
| Subjects: | |
| Online Access: | http://www.shd.org.yu/HtDocs/SHD/Vol68/No12/V68-No12-06.pdf |
| _version_ | 1818139589898928128 |
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| author | IVANA HINIC GORAN STANICIC ZORAN POPOVIC |
| author_facet | IVANA HINIC GORAN STANICIC ZORAN POPOVIC |
| author_sort | IVANA HINIC |
| collection | DOAJ |
| description | The photoluminescence spectra of silica xerogel samples synthesized with ethanol as solvent and xerogel where the ethanol was exchanged by water before drying are reported. In addition, the photoluminescence spectrum of a silica cryogel synthesized with tert-butanol as solvent was investigated. The samples were modified by formamide. Bands at 2.00, 2.20, 2.32 and 2.46 eV were identified. In the photoluminescence spectra of all samples. The band at 2.00 eV is caused by the presence of silane, and the band at 2.20 eV is connected with the nonstoichiometric composition of silica. The photoluminescence band at 2.32 eV was found to originate from the organic groups of the solvent. The origin of this band are E defect centers, which is a prominenet paramagnetic defect in conventional a SiO2. |
| first_indexed | 2024-12-11T10:30:30Z |
| format | Article |
| id | doaj.art-cd80ba883b894b40956487695d0fbfb0 |
| institution | Directory Open Access Journal |
| issn | 0352-5139 |
| language | English |
| last_indexed | 2024-12-11T10:30:30Z |
| publishDate | 2003-12-01 |
| publisher | Serbian Chemical Society |
| record_format | Article |
| series | Journal of the Serbian Chemical Society |
| spelling | doaj.art-cd80ba883b894b40956487695d0fbfb02022-12-22T01:10:58ZengSerbian Chemical SocietyJournal of the Serbian Chemical Society0352-51392003-12-016812953959Influence of the synthesis conditions on the photoluminescence of silica gelsIVANA HINICGORAN STANICICZORAN POPOVICThe photoluminescence spectra of silica xerogel samples synthesized with ethanol as solvent and xerogel where the ethanol was exchanged by water before drying are reported. In addition, the photoluminescence spectrum of a silica cryogel synthesized with tert-butanol as solvent was investigated. The samples were modified by formamide. Bands at 2.00, 2.20, 2.32 and 2.46 eV were identified. In the photoluminescence spectra of all samples. The band at 2.00 eV is caused by the presence of silane, and the band at 2.20 eV is connected with the nonstoichiometric composition of silica. The photoluminescence band at 2.32 eV was found to originate from the organic groups of the solvent. The origin of this band are E defect centers, which is a prominenet paramagnetic defect in conventional a SiO2.http://www.shd.org.yu/HtDocs/SHD/Vol68/No12/V68-No12-06.pdfsilica gelluminescenceinfrared spectroscopy |
| spellingShingle | IVANA HINIC GORAN STANICIC ZORAN POPOVIC Influence of the synthesis conditions on the photoluminescence of silica gels Journal of the Serbian Chemical Society silica gel luminescence infrared spectroscopy |
| title | Influence of the synthesis conditions on the photoluminescence of silica gels |
| title_full | Influence of the synthesis conditions on the photoluminescence of silica gels |
| title_fullStr | Influence of the synthesis conditions on the photoluminescence of silica gels |
| title_full_unstemmed | Influence of the synthesis conditions on the photoluminescence of silica gels |
| title_short | Influence of the synthesis conditions on the photoluminescence of silica gels |
| title_sort | influence of the synthesis conditions on the photoluminescence of silica gels |
| topic | silica gel luminescence infrared spectroscopy |
| url | http://www.shd.org.yu/HtDocs/SHD/Vol68/No12/V68-No12-06.pdf |
| work_keys_str_mv | AT ivanahinic influenceofthesynthesisconditionsonthephotoluminescenceofsilicagels AT goranstanicic influenceofthesynthesisconditionsonthephotoluminescenceofsilicagels AT zoranpopovic influenceofthesynthesisconditionsonthephotoluminescenceofsilicagels |