Synthesis of Nanocrystalline of Lanthanum Doped NaTaO3 and Photocatalytic Activity for Hydrogen Production
| Main Authors: | Husin, Husni; Department of Chemical Engineering, Syiah Kuala University, Pontas, Komala; Graduate Study of Chemical Engineering, Syiah Kuala University, Sy, Yuliana; Department of Chemical Engineering, Syiah Kuala University, Syawaliah, S.; Department of Chemical Engineering, Syiah Kuala University, Saisa, S.; Graduate Study of Chemical Engineering, Syiah Kuala University |
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| Format: | Article info application/pdf eJournal |
| Bahasa: | eng |
| Terbitan: |
ITB Journal Publisher, LPPM ITB
, 2014
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| Subjects: | |
| Online Access: |
http://journals.itb.ac.id/index.php/jets/article/view/881 http://journals.itb.ac.id/index.php/jets/article/view/881/534 |
Daftar Isi:
- Sodium tantalum oxide doping lanthanum (La-NaTaO3) compounds were successfully synthesized by a sol-gel method and calcined at different temperatures. Tantalum chloride (TaCl5) was used as starting material and lanthanum nitrate (La(NO3)3.6H2O) as lanthanum source. X-ray diffraction (XRD) revealed that the calcination temperature strongly influenced the crystallinity of the prepared samples.The crystallite sizes of the resultant La-NaTaO3were in the range of 27-46 nm. The photocatalytic activities of the samples were examined for hydrogen production from an aqueous methanol solution under UV light irradiation. It was found that the photocatalytic activity of the La-NaTaO3 depended strongly on the calcination temperature. The range of calcination temperatures were 500, 700, and 900°C. The La-NaTaO3 sample calcined at 900°C showed the highest photocatalytic activity compared to the samplescalcined at the other temperatures. The rate of hydrogen production reached a value of 6.16 mmol h-1 g-1 catalyst.