Nanostructured manganese oxide as an efficient eco-friendly catalyst for removing azo dye Calcon from water
| Autor: | Amina Amarray, Sanae El Ghachtouli, Zaina Zaroual, Mohammed Ait Himi, Patrick Bonnaillie, M. Azzi |
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| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science Kinetics 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Environmentally friendly Catalysis Adsorption Chemical engineering 0103 physical sciences Monolayer Degradation (geology) Freundlich equation Thin film 0210 nano-technology |
| Zdroj: | Materials Today: Proceedings. 37:3905-3912 |
| ISSN: | 2214-7853 |
| DOI: | 10.1016/j.matpr.2020.08.604 |
| Popis: | Nanostructured manganese oxide was produced using a nontoxic reactive by a simple electrodeposition on solid substrates (SnO2). The structural and morphological characterizations of the electrodeposited material (Na-MnO2) confirmed the forming of homogeneous, adherent and well crystallized thin films. The highly efficient degradation of azo dye (Calcon) over electrodeposited material Na-MnO2 was studied by adjusting various parameters of the reaction. The degradation rate was facilitated by acidic pH (pH = 3). Kinetics and isotherm studies showed that the adsorption reaction is of the pseudo-second-order reaction model. The result was a monolayer that adsorbed a quantity of 294.12 mg/g. The adsorption data was consistent with Freundlich isotherm. The application of Na-MnO2/SnO2 material proved its ability to be used multiple times without prior processing, providing after 5 uses a discoloration efficiency superior to 86%. Low-cost efficient materials and methods are promising for the degradation of organic pollutants to maintain a clean environment. |
| Databáze: | OpenAIRE |
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