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Publication
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| Research Title |
Influence of calcination temperature on the structural properties and
photocatalytic efficiencies of nanorice-like N-doped TiO2 photocatalyst |
| Date of Distribution |
8 June 2018 |
| Conference |
| Title of the Conference |
RGJ-Ph.D. Congress 19 |
| Organiser |
Royal Golden Jubilee Ph.D. (RGJ-Ph.D.) |
| Conference Place |
Jomtien Palm Beach Hotel and Resort |
| Province/State |
Pattaya, Chonburi, Thailand |
| Conference Date |
7 June 2018 |
| To |
9 June 2018 |
| Proceeding Paper |
| Volume |
19 |
| Issue |
- |
| Page |
CCGI-O11 |
| Editors/edition/publisher |
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| Abstract |
The purposes of this research were to synthesize TiO2 doped with nitrogen (N-doped TiO2) by hydrothermal method and to test the photocatalytic degradation of paraquat under UV and visible light. The effect of calcination temperature on their structural properties and photocatalytic activity were investigated. The characterizations of calcined N-doped TiO2 catalysts such as specific surface area, bandgap energy, crystallinity, phase structure, textural properties, surface morphology, elements and state of charges were analyzed by several investigation techniques. The results showed that the effect of calcination temperature was significant on surface morphology, crystallinity, specific surface area, pore size diameter, bandgap energy and amount of nitrogen element, but insignificant on phase structure and oxidation state of Ti atom. The N-doped TiO2 samples demonstrated only anatase crystalline phase with the nanorice-like morphology. The expansion on the particle was found at 650 and 700°C of calcination temperature, resulting in increased pore size diameter [1]. The bandgap energy was determined by Kubelka-Munk theory to be in range 3.07-3.18 eV, which appeared slightly lower than anatase standard (3.20 eV). The nitrogen content was observed at 100, 300 and 400°C only. Also, the nitrogen element disappeared at 500°C onwards. The N atom can be incorporated in TiO2 structure with interstitial site [2]. The uncalcined (100°C) sample displayed the highest percent paraquat degradation under UV and visible light illumination. Moreover, percent paraquat removal significantly decreased with increasing calcination temperature. The specific surface area and nitrogen content level showed the important roles for the photodegradation of paraquat under UV and visible light irradiation. |
| Author |
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| Peer Review Status |
มีผู้ประเมินอิสระ |
| Level of Conference |
นานาชาติ |
| Type of Proceeding |
Abstract |
| Type of Presentation |
Oral |
| Part of thesis |
true |
| Presentation awarding |
false |
| Attach file |
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| Citation |
0
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Journal Publication
ไทย