Adsorption of Methylene Blue Dye on Hydrothermally Prepared Tungsten Oxide Nanosheets
Doma, A., Hassan, N., Abd-Elhamid, A., Soliman, H. (2020). Adsorption of Methylene Blue Dye on Hydrothermally Prepared Tungsten Oxide Nanosheets. EKB Journal Management System, 63(2), 483-498. doi: 10.21608/ejchem.2020.18997.2171
Ahmed Doma; Nazly Hassan; Ahmed Ibrahim Abd-Elhamid; Hesham Soliman. "Adsorption of Methylene Blue Dye on Hydrothermally Prepared Tungsten Oxide Nanosheets". EKB Journal Management System, 63, 2, 2020, 483-498. doi: 10.21608/ejchem.2020.18997.2171
Doma, A., Hassan, N., Abd-Elhamid, A., Soliman, H. (2020). 'Adsorption of Methylene Blue Dye on Hydrothermally Prepared Tungsten Oxide Nanosheets', EKB Journal Management System, 63(2), pp. 483-498. doi: 10.21608/ejchem.2020.18997.2171
Doma, A., Hassan, N., Abd-Elhamid, A., Soliman, H. Adsorption of Methylene Blue Dye on Hydrothermally Prepared Tungsten Oxide Nanosheets. EKB Journal Management System, 2020; 63(2): 483-498. doi: 10.21608/ejchem.2020.18997.2171

Adsorption of Methylene Blue Dye on Hydrothermally Prepared Tungsten Oxide Nanosheets

Egyptian Journal of Chemistry
Article 11, Volume 63, Issue 2, February 2020, Page 483-498  XML PDF (1.9 MB)
Document Type: Original Article
DOI: 10.21608/ejchem.2020.18997.2171
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Authors
Ahmed Doma email 1; Nazly Hassan2; Ahmed Ibrahim Abd-Elhamid3; Hesham Soliman4
1Polymeric Materials Research Dept., Advanced Technology and New Materials Research Institute (ATNMRI), City for Scientific Research and Technological Applications (SRTA-City), New Borg Al-Arab City, 21934 Alexandria, Egypt
2Composites and Nanostructures Materials Research Department, Advanced Technology and New Materials Research Institute (ATNMRI),City of Scientific Research and Technological Applications (SRTA-City),New Borg Al-Arab City,21934 Alexandria,Egypt
3Composites and Nanostructured Materials Research Department, Advanced Technology and New Material Research Institute, City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City Alexandria, Egypt P. O. Box 21934.
4Advanced Technology and New Materials Research Institute (ATNMRI), City for Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, 21934 Alexandria, Egypt.
Abstract
Methylene blue (MB) dye was successfully adsorbed on hydrothermally prepared tungsten oxide nanosheets. SEM, XRD, FTIR and EDS were used for characterization of the prepared powder. Different parameters affecting the adsorption process such as, contact time, tungsten oxide dose, MB concentration, pH and temperature were investigated. The experimental data were fitted by first, second-order kinetic and intra-particle diffusion models in order to detect the kinetic of adsorption process. The second-order model is providing the best description of MB adsorption onto WO3.H2O. Adsorption equilibrium data obtained from Langmuir, Freundlich and Tempkin isotherm models, showed that the dye uptake is chemisorptions process. Thermodynamic data reveals that the adsorption reaction is exothermic and spontaneous. The effect of different crystalline phases of tungsten oxide nanosheets was investigated. Hydrated form WO3·H2O nanosheets show high adsorption performance, while the adsorption was poor in case of non-hydrated structure WO3 nanosheets.
Keywords
Tungsten oxide; methylene blue; hydrothermal; nanosheets
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