Nanosized TiO2 photocatalyst powder via sol-gel method: effect of hydrolysis degree on powder properties
Nanosized TiO2 powder was synthesized via sol-gel method using titanium tetraisopoxide (TPT) as the precursor. Mol ratios of water to TPT were varied from 1 (Powder A), 2 (Powder B), 3 (Powder C), and 4 (Powder D) to evaluate effect of hydrolysis degree. TG/DTA curves showed that amorphous phase tur...
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| Format: | Article |
| Language: | English |
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Hindawi Publishing Corporation
2009
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| Online Access: | http://irep.iium.edu.my/11417/ http://irep.iium.edu.my/11417/4/NanosizedTiO2_photocatalyst_.pdf |
| _version_ | 1848777324767477760 |
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| author | -, Nor Hafizah Sopyan, Iis |
| author_facet | -, Nor Hafizah Sopyan, Iis |
| author_sort | -, Nor Hafizah |
| building | IIUM Repository |
| collection | Online Access |
| description | Nanosized TiO2 powder was synthesized via sol-gel method using titanium tetraisopoxide (TPT) as the precursor. Mol ratios of water to TPT were varied from 1 (Powder A), 2 (Powder B), 3 (Powder C), and 4 (Powder D) to evaluate effect of hydrolysis degree. TG/DTA curves showed that amorphous phase turned to anatase crystal structure at ca. 415, 337, 310, and 339∘C for Powders A, B, C, and D, respectively. XRD analysis showed that all the synthesized TiO2 powders were 100% in anatase form with Powders B and C showing considerably higher crystallinities. The powders obtained at lower water to TPT mol ratios were spherical in shape and they became bar-like shapes higher mol ratios. The lower hydrolysis degree led to higher surface area of the Powder A (24.8 m2/g) compared to Powder B (14.6 m2/g). From phenol photocatalytic measurement, Powder B was the most efficient attributed to its higher crystallinity. |
| first_indexed | 2025-11-14T14:44:11Z |
| format | Article |
| id | iium-11417 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T14:44:11Z |
| publishDate | 2009 |
| publisher | Hindawi Publishing Corporation |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-114172012-03-22T03:45:30Z http://irep.iium.edu.my/11417/ Nanosized TiO2 photocatalyst powder via sol-gel method: effect of hydrolysis degree on powder properties -, Nor Hafizah Sopyan, Iis TS Manufactures Nanosized TiO2 powder was synthesized via sol-gel method using titanium tetraisopoxide (TPT) as the precursor. Mol ratios of water to TPT were varied from 1 (Powder A), 2 (Powder B), 3 (Powder C), and 4 (Powder D) to evaluate effect of hydrolysis degree. TG/DTA curves showed that amorphous phase turned to anatase crystal structure at ca. 415, 337, 310, and 339∘C for Powders A, B, C, and D, respectively. XRD analysis showed that all the synthesized TiO2 powders were 100% in anatase form with Powders B and C showing considerably higher crystallinities. The powders obtained at lower water to TPT mol ratios were spherical in shape and they became bar-like shapes higher mol ratios. The lower hydrolysis degree led to higher surface area of the Powder A (24.8 m2/g) compared to Powder B (14.6 m2/g). From phenol photocatalytic measurement, Powder B was the most efficient attributed to its higher crystallinity. Hindawi Publishing Corporation 2009 Article PeerReviewed application/pdf en http://irep.iium.edu.my/11417/4/NanosizedTiO2_photocatalyst_.pdf -, Nor Hafizah and Sopyan, Iis (2009) Nanosized TiO2 photocatalyst powder via sol-gel method: effect of hydrolysis degree on powder properties. International Journal of Photoenergy, 2009. pp. 1-8. ISSN 1687-529X http://www.hindawi.com/journals/ijp/ |
| spellingShingle | TS Manufactures -, Nor Hafizah Sopyan, Iis Nanosized TiO2 photocatalyst powder via sol-gel method: effect of hydrolysis degree on powder properties |
| title | Nanosized TiO2 photocatalyst powder via sol-gel method: effect of hydrolysis degree on powder properties |
| title_full | Nanosized TiO2 photocatalyst powder via sol-gel method: effect of hydrolysis degree on powder properties |
| title_fullStr | Nanosized TiO2 photocatalyst powder via sol-gel method: effect of hydrolysis degree on powder properties |
| title_full_unstemmed | Nanosized TiO2 photocatalyst powder via sol-gel method: effect of hydrolysis degree on powder properties |
| title_short | Nanosized TiO2 photocatalyst powder via sol-gel method: effect of hydrolysis degree on powder properties |
| title_sort | nanosized tio2 photocatalyst powder via sol-gel method: effect of hydrolysis degree on powder properties |
| topic | TS Manufactures |
| url | http://irep.iium.edu.my/11417/ http://irep.iium.edu.my/11417/ http://irep.iium.edu.my/11417/4/NanosizedTiO2_photocatalyst_.pdf |