Al2O3 nanoparticles synthesized using various oxidizing agents: Defluoridation performance
This study concerns the removal of fluoride using aluminium oxide nanoparticles synthesized in the presence of oxidizing agents H2SO4, KMnO4 and K2Cr2O7. The obtained nanoparticles were characterized using TGA, FESEM, EDX and XRD. The almost constant weight loss was observed from the TGA data for th...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2017-12-01
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| Series: | Journal of Science: Advanced Materials and Devices |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2468217917300722 |
| _version_ | 1811342464102957056 |
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| author | M. Changmai J.P. Priyesh M.K. Purkait |
| author_facet | M. Changmai J.P. Priyesh M.K. Purkait |
| author_sort | M. Changmai |
| collection | DOAJ |
| description | This study concerns the removal of fluoride using aluminium oxide nanoparticles synthesized in the presence of oxidizing agents H2SO4, KMnO4 and K2Cr2O7. The obtained nanoparticles were characterized using TGA, FESEM, EDX and XRD. The almost constant weight loss was observed from the TGA data for the temperature range from 400 to 650 °C. XRD analysis with and without oxidizing agents indicated the crystalline behaviour which increased with increasing the temperature. Prepared Al2O3 nanoparticles exhibited a considerable potential for fluoride adsorption from an aqueous medium in the concentration range of 2–8 mg/l. In this case, around 92% fluoride was adsorbed at pH = 4.7. The equilibrium data were well fitted with Freundlich adsorption isotherm, whereas the adsorption kinetic data followed the pseudo second order model. |
| first_indexed | 2024-04-13T19:11:29Z |
| format | Article |
| id | doaj.art-ab16941ce6614d2fb0de6d2ed3e473a6 |
| institution | Directory Open Access Journal |
| issn | 2468-2179 |
| language | English |
| last_indexed | 2024-04-13T19:11:29Z |
| publishDate | 2017-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Science: Advanced Materials and Devices |
| spelling | doaj.art-ab16941ce6614d2fb0de6d2ed3e473a62022-12-22T02:33:50ZengElsevierJournal of Science: Advanced Materials and Devices2468-21792017-12-012448349210.1016/j.jsamd.2017.09.001Al2O3 nanoparticles synthesized using various oxidizing agents: Defluoridation performanceM. ChangmaiJ.P. PriyeshM.K. PurkaitThis study concerns the removal of fluoride using aluminium oxide nanoparticles synthesized in the presence of oxidizing agents H2SO4, KMnO4 and K2Cr2O7. The obtained nanoparticles were characterized using TGA, FESEM, EDX and XRD. The almost constant weight loss was observed from the TGA data for the temperature range from 400 to 650 °C. XRD analysis with and without oxidizing agents indicated the crystalline behaviour which increased with increasing the temperature. Prepared Al2O3 nanoparticles exhibited a considerable potential for fluoride adsorption from an aqueous medium in the concentration range of 2–8 mg/l. In this case, around 92% fluoride was adsorbed at pH = 4.7. The equilibrium data were well fitted with Freundlich adsorption isotherm, whereas the adsorption kinetic data followed the pseudo second order model.http://www.sciencedirect.com/science/article/pii/S2468217917300722Al2O3NanoparticlesCharacterizationFluorideAdsorptionRegeneration |
| spellingShingle | M. Changmai J.P. Priyesh M.K. Purkait Al2O3 nanoparticles synthesized using various oxidizing agents: Defluoridation performance Journal of Science: Advanced Materials and Devices Al2O3 Nanoparticles Characterization Fluoride Adsorption Regeneration |
| title | Al2O3 nanoparticles synthesized using various oxidizing agents: Defluoridation performance |
| title_full | Al2O3 nanoparticles synthesized using various oxidizing agents: Defluoridation performance |
| title_fullStr | Al2O3 nanoparticles synthesized using various oxidizing agents: Defluoridation performance |
| title_full_unstemmed | Al2O3 nanoparticles synthesized using various oxidizing agents: Defluoridation performance |
| title_short | Al2O3 nanoparticles synthesized using various oxidizing agents: Defluoridation performance |
| title_sort | al2o3 nanoparticles synthesized using various oxidizing agents defluoridation performance |
| topic | Al2O3 Nanoparticles Characterization Fluoride Adsorption Regeneration |
| url | http://www.sciencedirect.com/science/article/pii/S2468217917300722 |
| work_keys_str_mv | AT mchangmai al2o3nanoparticlessynthesizedusingvariousoxidizingagentsdefluoridationperformance AT jppriyesh al2o3nanoparticlessynthesizedusingvariousoxidizingagentsdefluoridationperformance AT mkpurkait al2o3nanoparticlessynthesizedusingvariousoxidizingagentsdefluoridationperformance |