Removal of Methyl Violet from Aqueous solutions using Sr2ANbO5.5 (A= Ca+2, Sr+2 & Ba+2)

Labib. A. Awin, Mahmoud. A. El-Rais, Abdunnaser M Etorki, Mokhtar M Abobaker, Mawada. S. Alzorgani, Maryam M. Alnaas, Miloud E. Sweesi, Ashraf M. Ward

Abstract


Three members of the A- site doped Nb perovskites with general formula Sr2CaNbO5.5, Sr3NbO5.5 and BaSr2NbO5.5 were synthesised by solid-state methods and their removal efficiency of Methyl violet from aqueous solutions investigated. The X-ray diffraction measurements demonstrated that the three samples have a faced cubic perovskite-type structure in space group Fm 163"> m. The additions of Ba2+ and Ca2+ into the A-site of Sr3NbO5.5 have influenced the cell volume, crystal size and density. Subsequently, the removal capacity was also impacted. The crystallite size of the three oxides was calculated to be less than 82 nm. The maximum removal capacities of Methyl violet are found to be 46.5, 13.1 and 8.0 mg/g using BaSr2NbO5.5, Sr3NbO5.5 and CaSr2NbO5.5 respectively. The amounts of the adsorbed dye have decreased as the ionic radii of the doped cations decreased. The removals of Methyl violet have positive relationship with pH, temperature and the mass of the oxides.


Keywords


Aqueous, Removal, Methyl violet, A-site Doping.

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References


Agarwal S. K., Water Pollution, A.P.H. Publishing Corporation, 2005.

Cheremisinoff N. P., Handbook of Water and Wastewater Treatment Technologies, Butterworth-Heinemann, 2002.

Pawlowski L., Physicochemical Methods for Water and Wastewater Treatment, Elsevier Science, 1982.

Tejuca L. G. and Fierro, J. L. G., Properties and Applications of Perovskite-Type Oxides, Taylor & Francis, 1992.

Books H., Articles on Triarylmethane Dyes, Including: Phenolphthalein, Methyl Violet, Bromothymol Blue, Coomassie Brilliant Blue, Bromophenol Blue, Malachite Gr, Hephaestus Books, 2011.

Lecomte J., Loup, J. P., Hervieu, M. and Raveau, B., "Non-stoichiometry and electrical conductivity of strontium niobates with perovskite structure", Physica Status Solidi, 2, 65, 743-752, 1981.

Animitsa I., Neiman, A., Sharafutdinov, A. and Nochrin, S., "Strontium tantalates with perovskite-related structure", Solid State Ionics, 0, 136–137, 265-271, 2000.

King G. and Woodward, P. M., "Cation ordering in perovskites", Journal of Materials Chemistry, 28, 20, 5785-5796, 2010.

Fergus J. W., "Perovskite oxides for semiconductor-based gas sensors", Sensors and Actuators B: Chemical, 2, 123, 1169-1179, 2007.

Hunter B. A. and Howard, C. J., "RIETICA. A Computer Program for Rietveld Analysis of X-Ray and Neutron Powder Diffraction Patterns", Rietica, 1998.

Langford J. I. and Wilson, A. J. C., "Scherrer after sixty years: A survey and some new results in the determination of crystallite size", Journal of Applied Crystallography, 2, 11, 102-113, 1978.

Nogi K., Hosokawa, M., Naito, M. and Yokoyama, T., Nanoparticle Technology Handbook, Elsevier, 2012.

Shannon R. D., "Revised Effective Ionic-Radii and Systematic Studies of Interatomic Distances in Halides and Chalcogenides", Acta Crystallographica Section A, Sep1, 32, 751-767, 1976.




DOI: http://dx.doi.org/10.52155/ijpsat.v26.1.2973

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