Effect of doped SiO2 and calcinations temperature on phase transformation of TiO2 photocatalyst prepared by sol-gel method
The purpose of this research was to study the effect of calcinations temperature and SiO2 addition on phase transformation,crystallite size, and photocatalytic activity of SiO2/TiO2 thin films by using indigo carmine as an indicator. Thecomposite particles were prepared by sol-gel method via calcina...
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| Format: | Article |
| Language: | English |
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Prince of Songkla University
2008-05-01
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| Series: | Songklanakarin Journal of Science and Technology (SJST) |
| Subjects: | |
| Online Access: | http://rdo.psu.ac.th/sjst/ejournal/journal/30-3/0125-3395-30-3-385-391.pdf |
| _version_ | 1818268507514601472 |
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| author | Sutham Niyomwas Kalayanee Kooptarnond Jiraporn Damchan Lek Sikong |
| author_facet | Sutham Niyomwas Kalayanee Kooptarnond Jiraporn Damchan Lek Sikong |
| author_sort | Sutham Niyomwas |
| collection | DOAJ |
| description | The purpose of this research was to study the effect of calcinations temperature and SiO2 addition on phase transformation,crystallite size, and photocatalytic activity of SiO2/TiO2 thin films by using indigo carmine as an indicator. Thecomposite particles were prepared by sol-gel method via calcinations at a temperature range of 300-700oC for 2 h, and thecomposite thin films were prepared by means of spin coating. The microstructure and crystallite size of pure TiO2 and SiO2/TiO2 composite powders were characterized by using XRD, SEM and DTA. It was found that anatase structures wereformed at a calcinations temperature range of 300-600oC and mixed phases of anatase and rutile were observed at a temperatureof 700oC. Crystallite size of pure TiO2 tends to increase with an increase in calcinations temperature. Doped SiO2in the TiO2 has an effect on crystal phases and crystallite size of the composite powders and thin films, resulting in thechange of the photocatalytic activity of TiO2. |
| first_indexed | 2024-12-12T20:39:35Z |
| format | Article |
| id | doaj.art-baf7a9d4bfc7483f98306dcca81cb506 |
| institution | Directory Open Access Journal |
| issn | 0125-3395 |
| language | English |
| last_indexed | 2024-12-12T20:39:35Z |
| publishDate | 2008-05-01 |
| publisher | Prince of Songkla University |
| record_format | Article |
| series | Songklanakarin Journal of Science and Technology (SJST) |
| spelling | doaj.art-baf7a9d4bfc7483f98306dcca81cb5062022-12-22T00:12:48ZengPrince of Songkla UniversitySongklanakarin Journal of Science and Technology (SJST)0125-33952008-05-01303385391Effect of doped SiO2 and calcinations temperature on phase transformation of TiO2 photocatalyst prepared by sol-gel methodSutham NiyomwasKalayanee KooptarnondJiraporn DamchanLek SikongThe purpose of this research was to study the effect of calcinations temperature and SiO2 addition on phase transformation,crystallite size, and photocatalytic activity of SiO2/TiO2 thin films by using indigo carmine as an indicator. Thecomposite particles were prepared by sol-gel method via calcinations at a temperature range of 300-700oC for 2 h, and thecomposite thin films were prepared by means of spin coating. The microstructure and crystallite size of pure TiO2 and SiO2/TiO2 composite powders were characterized by using XRD, SEM and DTA. It was found that anatase structures wereformed at a calcinations temperature range of 300-600oC and mixed phases of anatase and rutile were observed at a temperatureof 700oC. Crystallite size of pure TiO2 tends to increase with an increase in calcinations temperature. Doped SiO2in the TiO2 has an effect on crystal phases and crystallite size of the composite powders and thin films, resulting in thechange of the photocatalytic activity of TiO2.http://rdo.psu.ac.th/sjst/ejournal/journal/30-3/0125-3395-30-3-385-391.pdfsol-gel methodSiO2/TiO2photocatalystphotocatalytic activityphase transformation |
| spellingShingle | Sutham Niyomwas Kalayanee Kooptarnond Jiraporn Damchan Lek Sikong Effect of doped SiO2 and calcinations temperature on phase transformation of TiO2 photocatalyst prepared by sol-gel method Songklanakarin Journal of Science and Technology (SJST) sol-gel method SiO2/TiO2 photocatalyst photocatalytic activity phase transformation |
| title | Effect of doped SiO2 and calcinations temperature on phase transformation of TiO2 photocatalyst prepared by sol-gel method |
| title_full | Effect of doped SiO2 and calcinations temperature on phase transformation of TiO2 photocatalyst prepared by sol-gel method |
| title_fullStr | Effect of doped SiO2 and calcinations temperature on phase transformation of TiO2 photocatalyst prepared by sol-gel method |
| title_full_unstemmed | Effect of doped SiO2 and calcinations temperature on phase transformation of TiO2 photocatalyst prepared by sol-gel method |
| title_short | Effect of doped SiO2 and calcinations temperature on phase transformation of TiO2 photocatalyst prepared by sol-gel method |
| title_sort | effect of doped sio2 and calcinations temperature on phase transformation of tio2 photocatalyst prepared by sol gel method |
| topic | sol-gel method SiO2/TiO2 photocatalyst photocatalytic activity phase transformation |
| url | http://rdo.psu.ac.th/sjst/ejournal/journal/30-3/0125-3395-30-3-385-391.pdf |
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