In Situ Synthesis of Magnetic Poly(DMAEAB-co-NIPAm)@Fe<sub>3</sub>O<sub>4</sub> Composite Hydrogel for Removal of Dye from Water
Water pollution by toxic substances, such as dye molecules, remains a major environmental problem that needs to be solved. In the present work, the magnetic composite hydrogel based on the poly(2-(methacryloyloxy)-<i>N</i>-(2-hydroxyethyl)-<i>N</i>,<i>N</i>-dimeth...
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MDPI AG
2021-11-01
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| Online Access: | https://www.mdpi.com/2310-2861/7/4/201 |
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| author | Zhi Chen Xia Song Wilson Wee Mia Soh Yuting Wen Jingling Zhu Miao Zhang Jun Li |
| author_facet | Zhi Chen Xia Song Wilson Wee Mia Soh Yuting Wen Jingling Zhu Miao Zhang Jun Li |
| author_sort | Zhi Chen |
| collection | DOAJ |
| description | Water pollution by toxic substances, such as dye molecules, remains a major environmental problem that needs to be solved. In the present work, the magnetic composite hydrogel based on the poly(2-(methacryloyloxy)-<i>N</i>-(2-hydroxyethyl)-<i>N</i>,<i>N</i>-dimethylethan-1-aminium bromide-co-<i>N</i>-isopropylacrylamide) copolymer with incorporated Fe<sub>3</sub>O<sub>4</sub> particles ((poly(DMAEAB-co-NIPAm)@Fe<sub>3</sub>O<sub>4</sub>)) was prepared by an in situ synthesis technique for the efficient removal of dye molecules from water. The successfully synthesized magnetic hydrogel was characterized by FTIR, XRD, TGA, and TEM. The removal efficiency of the anionic dye bromophenol blue (BPB) and the cationic dye rhodamine B (RDM) by the prepared hydrogel adsorbents was evaluated. Various adsorption parameters, including the concentration of adsorbents and adsorption time, were also investigated. The results showed that the synthesized magnetic hydrogel had excellent BPB removal performance compared to the removal of RDM. The optimum adsorbent concentration for 0.5 mM BPB solution was approximately 0.5 g/L, and the removal efficiency was more than 99%. The kinetics data of BPB removal fitted well into the pseudo-2nd-order model, indicating that BPB dye adsorption involves chemical adsorption and physical adsorption. In addition, recycling studies were conducted to examine the reusability of the magnetic hydrogel for BPB removal for up to five cycles and the hydrogel could be reused without losing its high removal efficiency. The magnetic hydrogel poly(DMAEAB-co-NIPAm)@Fe<sub>3</sub>O<sub>4</sub> with high removal efficiency, good selectivity, and reusability shows great potential for the removal of anionic dyes in wastewater treatment. |
| first_indexed | 2024-03-10T04:03:16Z |
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| id | doaj.art-56e0a2e4ae4e4bb2a9c95b129238db45 |
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| issn | 2310-2861 |
| language | English |
| last_indexed | 2024-03-10T04:03:16Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Gels |
| spelling | doaj.art-56e0a2e4ae4e4bb2a9c95b129238db452023-11-23T08:27:53ZengMDPI AGGels2310-28612021-11-017420110.3390/gels7040201In Situ Synthesis of Magnetic Poly(DMAEAB-co-NIPAm)@Fe<sub>3</sub>O<sub>4</sub> Composite Hydrogel for Removal of Dye from WaterZhi Chen0Xia Song1Wilson Wee Mia Soh2Yuting Wen3Jingling Zhu4Miao Zhang5Jun Li6Department of Biomedical Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574, SingaporeDepartment of Biomedical Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574, SingaporeDepartment of Biomedical Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574, SingaporeDepartment of Biomedical Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574, SingaporeDepartment of Biomedical Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574, SingaporeDepartment of Biomedical Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574, SingaporeDepartment of Biomedical Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574, SingaporeWater pollution by toxic substances, such as dye molecules, remains a major environmental problem that needs to be solved. In the present work, the magnetic composite hydrogel based on the poly(2-(methacryloyloxy)-<i>N</i>-(2-hydroxyethyl)-<i>N</i>,<i>N</i>-dimethylethan-1-aminium bromide-co-<i>N</i>-isopropylacrylamide) copolymer with incorporated Fe<sub>3</sub>O<sub>4</sub> particles ((poly(DMAEAB-co-NIPAm)@Fe<sub>3</sub>O<sub>4</sub>)) was prepared by an in situ synthesis technique for the efficient removal of dye molecules from water. The successfully synthesized magnetic hydrogel was characterized by FTIR, XRD, TGA, and TEM. The removal efficiency of the anionic dye bromophenol blue (BPB) and the cationic dye rhodamine B (RDM) by the prepared hydrogel adsorbents was evaluated. Various adsorption parameters, including the concentration of adsorbents and adsorption time, were also investigated. The results showed that the synthesized magnetic hydrogel had excellent BPB removal performance compared to the removal of RDM. The optimum adsorbent concentration for 0.5 mM BPB solution was approximately 0.5 g/L, and the removal efficiency was more than 99%. The kinetics data of BPB removal fitted well into the pseudo-2nd-order model, indicating that BPB dye adsorption involves chemical adsorption and physical adsorption. In addition, recycling studies were conducted to examine the reusability of the magnetic hydrogel for BPB removal for up to five cycles and the hydrogel could be reused without losing its high removal efficiency. The magnetic hydrogel poly(DMAEAB-co-NIPAm)@Fe<sub>3</sub>O<sub>4</sub> with high removal efficiency, good selectivity, and reusability shows great potential for the removal of anionic dyes in wastewater treatment.https://www.mdpi.com/2310-2861/7/4/201magnetic hydrogelcompositeadsorptionbromophenol bluewater treatment |
| spellingShingle | Zhi Chen Xia Song Wilson Wee Mia Soh Yuting Wen Jingling Zhu Miao Zhang Jun Li In Situ Synthesis of Magnetic Poly(DMAEAB-co-NIPAm)@Fe<sub>3</sub>O<sub>4</sub> Composite Hydrogel for Removal of Dye from Water Gels magnetic hydrogel composite adsorption bromophenol blue water treatment |
| title | In Situ Synthesis of Magnetic Poly(DMAEAB-co-NIPAm)@Fe<sub>3</sub>O<sub>4</sub> Composite Hydrogel for Removal of Dye from Water |
| title_full | In Situ Synthesis of Magnetic Poly(DMAEAB-co-NIPAm)@Fe<sub>3</sub>O<sub>4</sub> Composite Hydrogel for Removal of Dye from Water |
| title_fullStr | In Situ Synthesis of Magnetic Poly(DMAEAB-co-NIPAm)@Fe<sub>3</sub>O<sub>4</sub> Composite Hydrogel for Removal of Dye from Water |
| title_full_unstemmed | In Situ Synthesis of Magnetic Poly(DMAEAB-co-NIPAm)@Fe<sub>3</sub>O<sub>4</sub> Composite Hydrogel for Removal of Dye from Water |
| title_short | In Situ Synthesis of Magnetic Poly(DMAEAB-co-NIPAm)@Fe<sub>3</sub>O<sub>4</sub> Composite Hydrogel for Removal of Dye from Water |
| title_sort | in situ synthesis of magnetic poly dmaeab co nipam fe sub 3 sub o sub 4 sub composite hydrogel for removal of dye from water |
| topic | magnetic hydrogel composite adsorption bromophenol blue water treatment |
| url | https://www.mdpi.com/2310-2861/7/4/201 |
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