Synthesis of Nanocrystalline of Lanthanum Doped NaTaO3 and Photocatalytic Activity for Hydrogen Production

Husni Husin, Komala Pontas, Yuliana Sy, S. Syawaliah, S. Saisa

Abstract


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.

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Moliner, R., Echegoyen, Y., Suelves, I., Lázaro, M.J. & Palacios, J.M., Ni–Mg and Ni–Cu–Mg Catalysts for Simultaneous Production of Hydrogen and Carbon Nanofibers: The Effect of Calcination Temperature, International Journal of Hydrogen Energy, 33(6), pp. 1719-1728, 2008.

Lin, W.C., Yang, W.D., Huang, I.L., Wu, T.S. & Chung, Z.J., Hydrogen Production from Methanol/Water Photocatalytic Decomposition Using Pt/TiO2−xNx Catalyst, Energy & Fuels, 23(4), pp. 2192-2196, 2009.

Rosen, M.A., Advances in Hydrogen Production by Thermochemical Water Decomposition: A Review, Energy, 35, pp.1068-1076, 2010.

Zheng, H.Q., Yong, H., Yang, T.O. Fan, Y.T. & Hou, H.W., A New Photosensitive Coordination Compound [Rul(Bpy)2](PF6)2 and Its Application in Photocatalytic H2Production under the Irradiation of Visible Light, International J. of Hydrogen Energy, 38, pp. 2938-12945, 2013.

Yu, J., Qi, L. & Jaroniec, M., Hydrogen Production by Photocatalytic Water Splitting over Pt/TiO2 Nanosheets with Exposed (001) Facets, The Journal of Physical Chemistry C, 1149(30), pp. 13118-13125, 2010.

Boudjemaa, A., Boumaza, S., Trari, M., Bouarab, R. & Bouguelia, A., Physical and Photo-Electrochemical Characterizations of A-Fe2O3. Application for Hydrogen Production, Int. J. Hydrogen Energy, 34, pp. 4268-4274, 2009.

Fujishima, A. & Honda, K., Electrochemical Photolysis of Water at a Semiconductor Electrode, Nature, 238, p. 37, 1972.

Mao, S.S. & Chen, X., Selected Nanotechnologies for Renewable Energy Applications, International Journal of Energy Research, 31(6-7), pp. 619-636, 2007.

Antony, R.P., Mathews, T., Ramesh, C., Murugesan, N., Dasgupta, A., Dhara, S., Dash, S. & Tyagi, A.K., Efficient Photocatalytic Hydrogen Generation by Pt Modified Tio2 Nanotubes Fabricated by Rapid Breakdown Anodization, International J. of Hydrogen Energy, 37, pp. 8268-8276, 2012.

Wang, Q., An, N., Bai, Y., Hang, H., Li, J., Lu, X., Liu, Y., Wanga, F., Li, Z. & Lei, Z., High Photocatalytic Hydrogen Production from Methanol Aqueous Solution Using the Photocatalysts Cus/TiO2, Int J Hydrogen Energy, 39(8), pp. 1073-1079, 2013.

Sang, H. X., Wang, X.T., Fan, C.C. & Wang, F., Enhanced Photocatalytic H2 Production from Glycerol Solution over Zno/Zns Core/Shell Nanorods Prepared by A Low Temperature Route, International J. of Hydrogen Energy, 37, pp. 1348-1355, 2012.

Liu, J. W., Chen, G., Li, Z. H. & Zhang, Z. G., Hydrothermal Synthesis and Photocatalytic Properties of ATaO3 and ANbO3 (A=Na and K), Int J Hydrogen Energy, 32(13), pp. 2269-2272, 2007.

Liu, D.R., Jiang, Y.-S. & Gao, G.M., Photocatalytic Degradation of an Azo Dye Using N-Doped NaTaO3 Synthesized by One-Step Hydrothermal Process, Chemosphere, 83(11), pp. 1546-1552, 2011.

Martínez, L.M.T., Gómez, R., Cuchillo, O.V., Juárez-Ramírez, I., López, A.C. & Sandoval, F.J.A., Enhanced Photocatalytic Water Splitting Hydrogen Production on RuO2/La:NaTaO3Prepared by Sol–Gel Method, Catalysis Communications, 12, pp. 268-272, 2010.

Husin, H., Su, W.N. & Hwang, B.J., Hydrogen Production over La0.02Na0.98TaO3 Photocatalysts from Pure Water and an Aqueous Methanol Solution, Jurnal Ilmiah Sain dan Teknologi Industri, 11(1), pp. 21-26, 2012.

Torres-Martínez, L.M., Cruz-López, A., Juárez-Ramírez, I. & Meza-de la Rosa, M.E., Methylene Blue Degradation by NaTaO3Sol-Gel Doped with Sm and La, Journal of Hazardous Materials, 165(1-3), pp. 774-779, 2009.

Sun, W., Zhang, S., Wang, C., Liu, Z. & Mao, Z., Effects of Cocatalyst and Calcination Temperature on Photocatalytic Hydrogen Evolution Over BaTi4O9 Powder Synthesized by the Polymerized Complex Method, Catal Letter, 123, pp. 282-288, 2008.

Shi, J.W., Chen, S.H., Wang, S.M., Ye, Z.L., Wu, P. &Xu, B., Favorable Recycling Photocatalyst Tio2/CFA: Effects of Calcination Temperature on the Structural Property and Photocatalytic Activity, Journal of Molecular Catalysis A: Chemical, 330, pp.41-48, 2010.

Husin, H., Pontas, K., Meilina, H. & Hasfita, F., Decomposition of Methanol Aqueous Solution into Hydrogen on Lanthanum doped Sodium Tantalum Oxide Semiconductor,Journal of Chemical Engineering, University of North Sumatera, 2, pp. 12-16, 2013.

Yan, S.C., Wang, Z.Q., Li, Z.S. & Zou, Z.G., Photocatalytic Activities for Water Splitting of La-doped-NaTaO3Fabricated by Microwave Synthesis, Solid State Ionics, 180(32), pp. 1539-1542, 2009.

Husin, H., Chen, H.M., Su, W.N., Pan, C.J., Chuang, W.T., Sheu, H.S. & Hwang, B.J., Green Fabrication of La-doped NaTaO3 via H2O2Assisted Sol-Gel Route for Photocatalytic Hydrogen Production, Appl. Catal., B: Environmental, 102(1), pp. 343-351, 2011.

Kudo, A. &Miseki, Y., Heterogeneous Photocatalyst Materials for Water Splitting, Chemical Society Reviews, 38(1), pp. 253-278, 2009.

Yao, S., Jia, X., Jiao, L., Zu, C. & Shi, Z., La doped TiO2Hollow Fiber and their Photocatalytic Activity under UV and Visible Light, Indian Journal of Chemistry, 51, pp.1049-1056,2012.

Zhang, X., Yang, M., Zhao, J. & Guo, L. Photocatalytic Hydrogen Evolution with Simultaneous Degradation of Organics over (CuIn)0.2Zn1.6S2Solid Solution, International Journal of Hydrogen Energy, 38, pp.15985-15991, 2013




DOI: http://dx.doi.org/10.5614%2Fj.eng.technol.sci.2014.46.3.6

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