The removal of aniline blue dye from aqueous solutions using the A-site doped perovskite Ce1-xBixCrO3 (x = 0, 0.5, 1) was investigated. The perovskite oxides were synthesised using Sol-Gel method and characterised by conventional powder X-ray diffraction technique. The X-ray diffraction measurements suggested that doping with Bismuth Ion influences both the crystal structure and the particle size of the oxides, and consequently affects the adsorption properties. It was found that both CeCrO3 and Ce0.5Bi0.5CrO3 compounds are orthorhombic and have approximate particle size of 87 and 36 nm respectively, whereas BiCrO3 oxide has rhombohedral space group symmetry and the particle sizes are less than 49 nm. The batch mode study demonstrated that the removal capacities of Aniline Blue at 150 min and pH = 4.3 for Ce0.5Bi0.5CrO3, CeCrO3 and BiCrO3 are 779.67, 705.45 and 440.18 mg/g respectively. The results reflect the influence of the A site doping on the adsorption properties of the oxides. The removal of Aniline Blue was found to be negatively correlated with temperature and pH.
References
[1]
Baban, A., Yediler, A. and Ciliz, N.K. (2010) Integrated Water Management and CP Implementation for Wool and Textile Blend Processes. CLEAN—Soil, Air, Water, 38, 84-90. https://doi.org/10.1002/clen.200900102
[2]
Robinson, T., McMullan, G., Marchant, R. and Nigam, P. (2001) Remediation of Dyes in Textile Effluent: A Critical Review on Current Treatment Technologies with a Proposed Alternative. Bioresource Technology, 77, 247-255.
https://doi.org/10.1016/S0960-8524(00)00080-8
[3]
Carmen, Z. (2012) Textile Organic Dyes—Characteristics, Polluting Effects and Separation/Elimination Procedures from Industrial Effluents—A Critical Overview. InTech, Janeza Trdine Rijeka, Croatia.
[4]
Hao, O.J., Kim, H. and Chiang, P.-C. (2000) Decolorization of Wastewater. Critical Reviews in Environmental Science and Technology, 30, 449-505.
https://doi.org/10.1080/10643380091184237
[5]
Ruthven, D.M. (1984) Principles of Adsorption and Adsorption Processes. Wiley, Hoboken, NJ.
[6]
Wong-Ng W.K., Goyal, A., Guo, R. and Bhalla, A.S. (2012) Synthesis, Properties, and Crystal Chemistry of Perovskite-Based Materials. Wiley, Hoboken, NJ.
[7]
Ishihara, T. (2009) Structure and Properties of Perovskite Oxides. In: Perovskite Oxide for Solid Oxide Fuel Cells, Springer, Berlin, Germany.
[8]
Lan, Y., Feng, X., Zhang, X., Shen, Y. and Wang, D. (2016) Effects of Bi Doping on Structural and Magnetic Properties of Double Perovskite Oxides Sr2FeMoO6. Physics Letters A, 380, 2962-2967. https://doi.org/10.1016/j.physleta.2016.06.057
[9]
Hofmann, A. (1862) Note on the Composition of Aniline-Blue. Proceedings of the Royal Society of London (1854-1905), 12, 578-579.
https://doi.org/10.1098/rspl.1862.0128
[10]
Langford, J.I. and Wilson, A.J.C. (1978) Scherrer after Sixty Years: A Survey and Some New Results in the Determination of Crystallite Size. Journal of Applied Crystallography, 11, 102-113. https://doi.org/10.1107/S0021889878012844
[11]
Shannon, R.D. (1976) Revised Effective Ionic-Radii and Systematic Studies of Interatomic Distances in Halides and Chalcogenides. Acta Crystallographica Section A, 32, 751-767.
[12]
Takagi, S., Subedi, A., Cooper, V.R. and Singh, D.J. (2010) Effect of A-Site Size Difference on Polar Behavior in MBiScNbO6 (M=Na, K, and Rb): Density Functional Calculations. Physical Review B, 82, 134108.
[13]
Corker, D.L., Glazer, A.M., Kaminsky, W., Whatmore, R.W., Dec, J. and Roleder, K. (1998) Investigation into the Crystal Structure of the Perovskite Lead Hafnate, PbHfO3. Acta Crystallographica Section B, 54, 18-28.
https://doi.org/10.1107/S0108768197009208
[14]
Wei, J. (1996) Adsorption and Cracking of N-Alkanes over ZSM-5: Negative Activation Energy of Reaction. Chemical Engineering Science, 51, 2995-2999.
https://doi.org/10.1016/0009-2509(96)00187-X
[15]
Mozurkewich, M. and Benson, S.W. (1984) Negative Activation Energies and Curved Arrhenius Plots. 1. Theory of Reactions over Potential Wells. Journal of Physics and Chemistry, 25, 6429. https://doi.org/10.1021/j150669a073
