Synthesis of eco-friendly nanocomposite polyoxometalates Dawson type and their application for the removal of cadmium from aqueous solution
Nanotechnology for Environmental Engineering, ISSN: 2365-6387, Vol: 7, Issue: 1, Page: 209-222
2022
- 4Citations
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Article Description
Abstract: Cadmium (Cd) has been recognized as one of the most dangerous heavy metals that causes significant affliction both on the environment and on human health. In this study, the chemical synthesis of green and environmentally friendly materials such as polyoxometalates (POMs) was performed. The polyoxometalates (PWMoO) and (αPWO) were then applied as a potential complexing material (ligands) for the elimination of cadmium (Cd) in aqueous medium. The complexation studies were evaluated by UV–visible spectrophotometric analysis, according to statistical calculation methods (isomolar series method, saturation method and balance displacement) by varying the experimental parameters namely the pH, the stability time and the temperature. The optimal values of these parameters have shown that the formed complexes were stable in pH 9 and pH 10, respectively, for complexes (PWMoOCd) and (αPWOCd). The time of stability for the two formed complexes was last to 30 min. The room temperature (25 °C) was favorable for the complexation of Cd on the two POMs. The stoichiometry or ligand/metal ratio of the complexation reactions and the stabilities constants of the formed complexes were also evaluated. The results obtained have shown that these formed complexes were stable in aqueous medium giving sufficiently high stability constants and a ligand/metal ratio of the two formed complexes was equal to 1. The stability constants for the formed complexes (PWMoOCd) and (αPWOCd) were, respectively, β = 1.074.10 and β = 5.74.10. Fourier infrared transformation spectroscopic analyses (FTIR), scanning electron microscopy (SEM) and energy-dispersive X-ray (EDX) spectroscopy characterized the synthesized POMs. Graphical Abstract: [Figure not available: see fulltext.]
Bibliographic Details
Springer Science and Business Media LLC
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