A new type of photocatalytic material, double-perovskite oxides, LnBaCo<SUB>2</SUB>O<SUB>5+δ</SUB> (Ln = Eu, Gd, and Sm) was synthesized via a conventional solid-state reaction process using Ln <SUB>2</SUB> O<SUB>3</SUB>, BaCO<SUB>3</SUB> and Co <SUB>2</SUB> O<SUB>3</SUB> as raw materials. X-ray diffraction results show that the crystalline structures are a pure orthorhombic lattice and are consistent with LnBaCo<SUB>2</SUB>O<SUB>5+δ</SUB> microparticles. The photocatalytic activity of the LnBaCo<SUB>2</SUB>O<SUB>5+δ</SUB> (Ln = Eu, Gd, and Sm) powders was further demonstrated in the degradation of Congo red (CR) under ultraviolet light irradiation with the dye solution concentration of 25 or 50 mg·L-1. The double-perovskite oxides LnBaCo<SUB>2</SUB>O<SUB>5+δ</SUB> show a certain photocatalytic activity during the degradation of CR under ultraviolet light, which means that they are one kind of the promising photocatalytic materials for the degradation of the azo dyes.
KeywordsDouble-PerovskiteLnBaCo2O<SUB>5+δ</SUB>PhotocatalysisCongo Red
Panda, N., Sahoo, H. and Mohapatra, S. (2011) Decolourization of Methyl Orange Using Fenton-like Mesoporous Fe2O3-SiO2 Composite. Journal of Hazardous Materials, 185, 359-365. http://dx.doi.org/10.1016/j.jhazmat.2010.09.042
Zhang, Y.Z., Zheng, J.T., Qu, X.F. and Chen, H.G. (2007) Effect of Granular Activated Carbon on Degradation of Methyl Orange When Applied in Combination with High-Voltage Pulse Discharge. Journal of Colloid and Interface Science, 316, 523-530. http://dx.doi.org/10.1016/j.jcis.2007.08.013
Zhang, F., Liu, Y.J., Cai, Y., Li, H., Cai, X.Y., Djerdj, I. and Wang, Y.D. (2013) A Facial Method to Synthesize Ni(OH)2 Nanosheets for Improving the Adsorption Properties of Congo Red in Aqueous Solution. Powder Technology, 235, 121-125. http://dx.doi.org/10.1016/j.powtec.2012.10.007
Crini, G. (2006) Non-Conventional Low-Cost Adsorbents for Dye Removal: A Review. Bioresoure Technology, 97, 1061-1085. http://dx.doi.org/10.1016/j.biortech.2005.05.001
Ai, L. and Zeng, Y. (2013) Hierarchical Porous NiO Architectures as Highly Recyclable Adsorbents for Effective Removal of Organic Dye from Aqueous Solution. Chemical Engineering Journal, 215-216, 269-278. http://dx.doi.org/10.1016/j.cej.2012.10.059
Saquib, M. and Muneer, M. (2003) Titanium Dioxide Mediated Photocatalyzed Degradation of a Textile Dye Deriva- tive, Acid Orange 8, in Aqueous Suspensions. Desalination, 155, 255-263. http://dx.doi.org/10.1016/S0011-9164(03)00303-5
Hoang, S., Guo, S.W., Hahn, N.T., Bard, A.J. and Mullins, C.B. (2012) Visible Light Driven Photoelectrochemical Water Oxidation on Nitrogen-Modified TiO2 Nanowires. Nano Letters, 12, 26-32. http://dx.doi.org/10.1021/nl2028188
Mageshwari, K., Nataraj, D., Pal, T., Sathyamoorthy, R. and Park, J. (2015) Improved Photocatalytic Activity of ZnO Coupled CuO Nanocomposites Synthesized by Reflux Condensation Method. Journal of Alloys and Compounds, 625, 362-370. http://dx.doi.org/10.1016/j.jallcom.2014.11.109
Xie, J., Wang, H., Duan, M. and Zhang, L. (2011) Synthesis and Photocatalysis Properties of ZnO Structures with Different Morphologies via Hydrothermal Method. Applied Surface Science, 257, 6358-6363. http://dx.doi.org/10.1016/j.apsusc.2011.01.105
Dong, S., Cui, Y., Wang, Y., Li, Y., Hu, L. and Sun, J. (2014) Designing Three-Dimensional Acicular Sheaf Shaped BiVO4/Reduced Graphene Oxide Composites for Efficient Sunlight-Driven Photocatalytic Degradation of Dye Waste- water. Chemical Engineering Journal, 249, 102-110. http://dx.doi.org/10.1016/j.cej.2014.03.071
Kim, C., Choi, M. and Jang, J. (2010) Nitrogen-Doped SiO2/TiO2 Core/Shell Nanoparticles as Highly Efficient Visible Light Photocatalyst. Catalysis Communications, 11, 378-382. http://dx.doi.org/10.1016/j.catcom.2009.11.005
Carp, O., Huisman, C.L. and Reller, A. (2004) Photoinduced Reactivity of Titanium Dioxide. Progress in Solid State Chemistry, 32, 33-177. http://dx.doi.org/10.1016/j.progsolidstchem.2004.08.001
Yin, K., Shao, M.W., Zhang, Z.S. and Lin, Z.Q. (2012) A Single-Source Precursor Route to Ag/SnO2 Heterogeneous Nanomaterials and Its Photo-Catalysis in Degradation of Congo Red. Materials Research Bulletin, 47, 3704-3708. http://dx.doi.org/10.1016/j.materresbull.2012.06.037
Zhang, J., Deng, S.J., Liu, S.Y., Chen, J.M., Han, B.Q., Wang, Y. and Wang, Y.D. (2014) Preparation and Photocata- lytic Activity of Nd Doped ZnO Nanoparticles. Materials Technology, 29, 262-268. http://dx.doi.org/10.1179/1753555713Y.0000000122
Luo, Y.Y., Tan, G.Q., Dong, G.H., Zhang, L.L., Huang, J., Yang, W., Zhao, C.C. and Ren, H.J. (2015) Structural Transformation of Sm3+ Doped BiVO4 with High Photocatalytic Activity under Simulated Sun-Light. Applied Surface Science, 324, 505-511. http://dx.doi.org/10.1021/cr980129f
Peňa, M.A. and Fierro, J.L.G. (2001) Chemical Structures and Performance of Perovskite Oxides. Chemical Reviews, 101, 1981-2017. http://dx.doi.org/10.1016/j.apsusc.2014.10.168
Yang, Y., Sun, Y.B. and Jiang, Y.S. (2006) Structure and Photocatalytic Property of Perovskite and Perovskite-Related Compounds. Materials Chemistry and Physics, 96, 234-239. http://dx.doi.org/10.1016/j.matchemphys.2005.07.007
Wang, Z.L. and Kang, Z.C. (1998) Functional and Smart Materials-Structural Evolution and Structure Analysis. Plenum Press, New York.
Yamamoto, T., Kobayashi, Y., Hayashi, N., Tassel, C., Saito, T., Yamanaka, S., Takano, M., Ohoyama, K., Shimakawa, Y., Yoshimura, K. and Kageyama, H. (2012) (Sr1-xBax) FeO2 (0.4 ≤ x ≤ 1): A New Oxygen-Deficient Perovskite Structure. Journal of the American Chemical Society, 134, 11444-11454. http://dx.doi.org/10.1021/ja3007403
Suntivich, J., Gasteiger, H.A., Yabuuchi, N., Nakanishi, H., Goodenough, J.B. and Shao-Horn, Y. (2011) Design Principles for Oxygen-Reduction Activity on Perovskite Oxide Catalysts for Fuel Cells and Metal-Air Batteries. Nature Chemistry, 3, 546-550. http://dx.doi.org/10.1038/nchem.1069
Buannic, L., Blanc, F., Middlemiss, D.S. and Grey, C.P. (2012) Probing Cation and Vacancy Ordering in the Dry and Hydrated Yttrium-Substituted BaSnO3 Perovskite by NMR Spectroscopy and First Principles Calculations: Implications for Proton Mobility. Journal of the American Chemical Society, 134, 14483-14498. http://dx.doi.org/10.1021/ja304712v
Yin, J., Zou, Z. and Ye, J. (2003) Photophysical and Photocatalytic Properties of MIn0.5Nb0.5O3 (M = Ca, Sr, and Ba). The Journal of Physical Chemistry B, 107, 61-65. http://dx.doi.org/10.1021/jp026403y
Junploy, P., Thongtem, S. and Thongtem, T. (2013) Photoabsorption and Photocatalysis of SrSnO3 Produced by a Cyclic Microwave Radiation. Superlattices and Microstructures, 57, 1-10. http://dx.doi.org/10.1016/j.spmi.2013.01.008
Ahuja, S. and Kutty, T.R.N. (1996) Nanoparticles of SrTiO3 Prepared by Gel to Crystallite Conversion and Their Photocatalytic Activity in the Mineralization of Phenol. Journal of Photochemistry and Photobiology A: Chemistry, 97, 99- 107. http://dx.doi.org/10.1016/1010-6030(96)04324-9
Zhang, L.L., Nie, Y.L., Hu, C. and Qu, J.H. (2012) Enhanced Fenton Degradation of Rhodamine B over Nanoscaled Cu-Doped LaTiO3 Perovskite. Applied Catalysis B: Environmental, 125, 418-424. http://dx.doi.org/10.1016/j.apcatb.2012.06.015
Kim, J.H. and Manthiram, A. (2008) LnBaCo2O5+δ Oxides as Cathodes for Intermediate-Temperature Solid Oxide Fuel Cells. Journal of the Electrochemical Society, 155, B385-B390. http://dx.doi.org/10.1149/1.2839028
Klyndziuk, A., Petrov, G., Kurhan, S., Chizhova, Y., Chabatar, A. and Kunitski, L. (2004) Sensor Properties of Some Perovskite-Like Metal Oxides. Chemical Sensors, 20, 854-855.
Fauth, F., Suard, E., Caignaert, V., Domengès, B., Mirebeau, I. and Keller, L. (2001) Interplay of Structural, Magnetic and Transport Properties in the Layered Co-Based Perovskite LnBaCo2O5 (Ln = Tb, Dy, Ho). The European Physical Journal B: Condensed Matter and Complex Systems, 21, 163-174. http://dx.doi.org/10.1007/PL00011119
Chen, T., Zhao, H.L., Xu, N.S., Li, Y., Lu, X.G., Ding, W.Z. and Li, F.S. (2011) Synthesis and Oxygen Permeation Properties of a Ce0.8Sm0.2O2-δ-LaBaCo2O5+δ Dual-Phase Composite Membrane. Journal of Membrane Science, 370, 158-165. http://dx.doi.org/10.1016/j.memsci.2011.01.007
Taskin, A.A., Lavrov, A.N. and Ando, Y. (2005) Achieving Fast Oxygen Diffusion in Perovskites by Cation Ordering. Applied Physics Letters, 86, Article ID: 091910. http://dx.doi.org/10.1063/1.1864244
Zhang, K., Ge, L., Ran, R., Shao, Z.P. and Liu, S.M. (2008) Synthesis, Characterization and Evaluation of Cation-Ordered LnBaCo2O5+δ as Materials of Oxygen Permeation Membranes and Cathodes of SOFCs. Acta Materialia, 56, 4876- 4889. http://dx.doi.org/10.1016/j.actamat.2008.06.004
Zhang, X.T., Hao, H.S., He, Q.L. and Hu, X. (2007) High-Temperature Electronic Transport Properties of Fe-Doped YBaCo2O5+δ. Physica B: Condensed Matter, 394, 118-121. http://dx.doi.org/10.1016/j.physb.2007.02.027
Yasodha, P., Gayathri, N., Bharathi, A., Premila, M., Sundar, C.S. and Hariharan, Y. (2007) Ce-Substitution Effects in GdBaCo2O5+δ. Solid State Communications, 144, 215-219. http://dx.doi.org/10.1016/j.ssc.2007.08.033
Wang, Y., Wang, Y., Meng, Y.L., Ding, H.M., Shan, Y.K., Zhao, X. and Tang, X.Z. (2008) A Highly Efficient Visi- ble-Light-Activated Photocatalyst Based on Bismuth- and Sulfur-Codoped TiO2. The Journal of Physical Chemistry C, 112, 6620-6626. http://dx.doi.org/10.1021/jp7110007
Cao, Y.Q., Hu, Y.Y., Sun, J. and Hou, B. (2010) Explore Various Co-Substrates for Simultaneous Electricity Generation and Congo Red Degradation in Air-Cathode Single-Chamber Microbial Fuel Cell. Bioelectrochemistry, 79, 71-76. http://dx.doi.org/10.1016/j.bioelechem.2009.12.001
Fu, S.S., Niu, H.L., Tao, Z.Y., Song, J.M., Mao, C.J., Zhang, S.Y., Chen, C.L. and Wang, D. (2013) Low Temperature Synthesis and Photocatalytic Property of Perovskite-Type LaCoO3 Hollow Spheres. Journal of Alloys and Compounds, 576, 5-12. http://dx.doi.org/10.1016/j.jallcom.2013.04.092