Enhanced Photocatalytic Activity of Powders (P25) via Calcination Treatment
P25 TiO2 powders were calcined at different temperatures in a muffle furnace in air. The P25 powders before and after calcination treatment were characterized with XRD FTIR, UV-visible diffuse reflectance spectra, SEM, TEM, HRTEM, and N2 adsorption-desorption measurements. The photocatalytic activit...
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| Main Authors: | , , , , |
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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/10.1155/2012/265760 |
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| author | Guohong Wang Lin Xu Jun Zhang Tingting Yin Deyan Han |
| author_facet | Guohong Wang Lin Xu Jun Zhang Tingting Yin Deyan Han |
| author_sort | Guohong Wang |
| collection | DOAJ |
| description | P25 TiO2 powders were calcined at different temperatures in a muffle furnace in air. The P25 powders before and after calcination treatment were characterized with XRD FTIR, UV-visible diffuse reflectance spectra, SEM, TEM, HRTEM, and N2 adsorption-desorption measurements. The photocatalytic activity was evaluated by the photocatalytic oxidation of methyl orange aqueous solution under UV light irradiation in air. The results showed that calcination treatment obviously influenced the microstructures and photocatalytic activity of the P25 TiO2 powders. The synergistic effect of the phase structure, BET surface area, and crystallinity on the photocatalytic of TiO2 powders (P25) after calcination was investigated. An optimal calcination temperature () was determined. The photocatalytic activity of TiO2 powders calcined at was nearly 2 times higher than that of the uncalcined P25 TiO2. The highest photocatalytic activities of the calcined samples at for 4 h might be ascribed to the enhancement of anatase crystallization and the optimal mass ratio (ca. 1 : 2) of rutile to anatase. |
| format | Article |
| id | doaj-art-5e2523a3fecb4400a9deb998b66df1a9 |
| 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-5e2523a3fecb4400a9deb998b66df1a92025-02-03T05:57:34ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2012-01-01201210.1155/2012/265760265760Enhanced Photocatalytic Activity of Powders (P25) via Calcination TreatmentGuohong Wang0Lin Xu1Jun Zhang2Tingting Yin3Deyan Han4College of Chemistry and Environmental Engineering, Hubei Normal University, Huangshi, Hubei 435002, ChinaCollege of Chemistry and Environmental Engineering, Hubei Normal University, Huangshi, Hubei 435002, ChinaState Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070, ChinaCollege of Chemistry and Environmental Engineering, Hubei Normal University, Huangshi, Hubei 435002, ChinaCollege of Chemistry and Environmental Engineering, Hubei Normal University, Huangshi, Hubei 435002, ChinaP25 TiO2 powders were calcined at different temperatures in a muffle furnace in air. The P25 powders before and after calcination treatment were characterized with XRD FTIR, UV-visible diffuse reflectance spectra, SEM, TEM, HRTEM, and N2 adsorption-desorption measurements. The photocatalytic activity was evaluated by the photocatalytic oxidation of methyl orange aqueous solution under UV light irradiation in air. The results showed that calcination treatment obviously influenced the microstructures and photocatalytic activity of the P25 TiO2 powders. The synergistic effect of the phase structure, BET surface area, and crystallinity on the photocatalytic of TiO2 powders (P25) after calcination was investigated. An optimal calcination temperature () was determined. The photocatalytic activity of TiO2 powders calcined at was nearly 2 times higher than that of the uncalcined P25 TiO2. The highest photocatalytic activities of the calcined samples at for 4 h might be ascribed to the enhancement of anatase crystallization and the optimal mass ratio (ca. 1 : 2) of rutile to anatase.http://dx.doi.org/10.1155/2012/265760 |
| spellingShingle | Guohong Wang Lin Xu Jun Zhang Tingting Yin Deyan Han Enhanced Photocatalytic Activity of Powders (P25) via Calcination Treatment International Journal of Photoenergy |
| title | Enhanced Photocatalytic Activity of Powders (P25) via Calcination Treatment |
| title_full | Enhanced Photocatalytic Activity of Powders (P25) via Calcination Treatment |
| title_fullStr | Enhanced Photocatalytic Activity of Powders (P25) via Calcination Treatment |
| title_full_unstemmed | Enhanced Photocatalytic Activity of Powders (P25) via Calcination Treatment |
| title_short | Enhanced Photocatalytic Activity of Powders (P25) via Calcination Treatment |
| title_sort | enhanced photocatalytic activity of powders p25 via calcination treatment |
| url | http://dx.doi.org/10.1155/2012/265760 |
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