Mesoporous Silica Modified with 2-Phenylimidazo[1,2-a] pyridine-3-carbaldehyde as an Effective Adsorbent for Cu(II) from Aqueous Solutions: A Combined Experimental and Theoretical Study
In this study, we will present an efficient and selective adsorbent for the removal of Cu(II) ions from aqueous solutions. The silica-based adsorbent is functionalized by 2-phenylimidazo[1,2-a] pyridine-3-carbaldehyde (SiN-imd-py) and the characterization was carried out by applying various techniqu...
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MDPI AG
2022-08-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/27/16/5168 |
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| author | Rafik Saddik Imad Hammoudan Said Tighadouini Othmane Roby Smaail Radi Maha I. Al-Zaben Abir Ben Bacha Vijay H. Masand Zainab M. Almarhoon |
| author_facet | Rafik Saddik Imad Hammoudan Said Tighadouini Othmane Roby Smaail Radi Maha I. Al-Zaben Abir Ben Bacha Vijay H. Masand Zainab M. Almarhoon |
| author_sort | Rafik Saddik |
| collection | DOAJ |
| description | In this study, we will present an efficient and selective adsorbent for the removal of Cu(II) ions from aqueous solutions. The silica-based adsorbent is functionalized by 2-phenylimidazo[1,2-a] pyridine-3-carbaldehyde (SiN-imd-py) and the characterization was carried out by applying various techniques including FT-IR, SEM, TGA and elemental analysis. The SiN-imd-py adsorbent shows a good selectivity and high adsorption capacity towards Cu(II) and reached 100 mg/g at pH = 6 and T = 25 °C. This adsorption capacity is important compared to other similar adsorbents which are currently published. The adsorption mechanism, thermodynamics, reusability and the effect of different experimental conditions, such as contact time, pH and temperature, on the adsorption process, were also investigated. In addition, a theoretical study was carried out to understand the adsorption mechanism and the active sites of the adsorbent, as well as the stability of the complex formed and the nature of the bonds. |
| first_indexed | 2024-03-09T04:02:26Z |
| format | Article |
| id | doaj.art-5a0076725eaa414fb2e2a06ab34cf7ff |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-09T04:02:26Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-5a0076725eaa414fb2e2a06ab34cf7ff2023-12-03T14:11:19ZengMDPI AGMolecules1420-30492022-08-012716516810.3390/molecules27165168Mesoporous Silica Modified with 2-Phenylimidazo[1,2-a] pyridine-3-carbaldehyde as an Effective Adsorbent for Cu(II) from Aqueous Solutions: A Combined Experimental and Theoretical StudyRafik Saddik0Imad Hammoudan1Said Tighadouini2Othmane Roby3Smaail Radi4Maha I. Al-Zaben5Abir Ben Bacha6Vijay H. Masand7Zainab M. Almarhoon8Laboratory of Organic Synthesis, Extraction and Valorization, Faculty of Sciences Ain Chock, Hassan II University, Casablanca 20000, MoroccoLaboratory of Organic Synthesis, Extraction and Valorization, Faculty of Sciences Ain Chock, Hassan II University, Casablanca 20000, MoroccoLaboratory of Organic Synthesis, Extraction and Valorization, Faculty of Sciences Ain Chock, Hassan II University, Casablanca 20000, MoroccoLaboratory of Organic Synthesis, Extraction and Valorization, Faculty of Sciences Ain Chock, Hassan II University, Casablanca 20000, MoroccoLaboratory of applied Chemistry and Environment (LCAE), Faculty of Sciences, Mohamed Premier University, Oujda 60000, MoroccoDepartment of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi ArabiaBiochemistry Department, College of Science, King Saud University, P.O. Box 22452, Riyadh 11495, Saudi ArabiaDepartment of Chemistry, Vidya Bharati Mahavidyalaya, Amravati 444 602, IndiaDepartment of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi ArabiaIn this study, we will present an efficient and selective adsorbent for the removal of Cu(II) ions from aqueous solutions. The silica-based adsorbent is functionalized by 2-phenylimidazo[1,2-a] pyridine-3-carbaldehyde (SiN-imd-py) and the characterization was carried out by applying various techniques including FT-IR, SEM, TGA and elemental analysis. The SiN-imd-py adsorbent shows a good selectivity and high adsorption capacity towards Cu(II) and reached 100 mg/g at pH = 6 and T = 25 °C. This adsorption capacity is important compared to other similar adsorbents which are currently published. The adsorption mechanism, thermodynamics, reusability and the effect of different experimental conditions, such as contact time, pH and temperature, on the adsorption process, were also investigated. In addition, a theoretical study was carried out to understand the adsorption mechanism and the active sites of the adsorbent, as well as the stability of the complex formed and the nature of the bonds.https://www.mdpi.com/1420-3049/27/16/5168heavy metalsadsorptionsilica functionalization |
| spellingShingle | Rafik Saddik Imad Hammoudan Said Tighadouini Othmane Roby Smaail Radi Maha I. Al-Zaben Abir Ben Bacha Vijay H. Masand Zainab M. Almarhoon Mesoporous Silica Modified with 2-Phenylimidazo[1,2-a] pyridine-3-carbaldehyde as an Effective Adsorbent for Cu(II) from Aqueous Solutions: A Combined Experimental and Theoretical Study Molecules heavy metals adsorption silica functionalization |
| title | Mesoporous Silica Modified with 2-Phenylimidazo[1,2-a] pyridine-3-carbaldehyde as an Effective Adsorbent for Cu(II) from Aqueous Solutions: A Combined Experimental and Theoretical Study |
| title_full | Mesoporous Silica Modified with 2-Phenylimidazo[1,2-a] pyridine-3-carbaldehyde as an Effective Adsorbent for Cu(II) from Aqueous Solutions: A Combined Experimental and Theoretical Study |
| title_fullStr | Mesoporous Silica Modified with 2-Phenylimidazo[1,2-a] pyridine-3-carbaldehyde as an Effective Adsorbent for Cu(II) from Aqueous Solutions: A Combined Experimental and Theoretical Study |
| title_full_unstemmed | Mesoporous Silica Modified with 2-Phenylimidazo[1,2-a] pyridine-3-carbaldehyde as an Effective Adsorbent for Cu(II) from Aqueous Solutions: A Combined Experimental and Theoretical Study |
| title_short | Mesoporous Silica Modified with 2-Phenylimidazo[1,2-a] pyridine-3-carbaldehyde as an Effective Adsorbent for Cu(II) from Aqueous Solutions: A Combined Experimental and Theoretical Study |
| title_sort | mesoporous silica modified with 2 phenylimidazo 1 2 a pyridine 3 carbaldehyde as an effective adsorbent for cu ii from aqueous solutions a combined experimental and theoretical study |
| topic | heavy metals adsorption silica functionalization |
| url | https://www.mdpi.com/1420-3049/27/16/5168 |
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