Grafting amino groups to enhance the adsorption of antimonate by MIL-100(Fe) for from natural water: Performance and mechanism
MIL-100(Fe) was modified by amino groups (MIL-100(Fe)-NH2) to enhance the removal of antimonate (Sb(V)) with low concentration (50−200 μg/L) from natural water through batch adsorption experiments. With the initial Sb(V) concentration up to 200 μg/L, the residual Sb(V) concentration after treated by...
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Elsevier
2023-05-01
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| Series: | Chemical Engineering Journal Advances |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666821123000157 |
| _version_ | 1797832723289604096 |
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| author | Mengsi Cheng Ying Fang Zhaoguang Yang Xinghao Liu Bo Qiu Tong Zhang Haipu Li Wenbo Zhao |
| author_facet | Mengsi Cheng Ying Fang Zhaoguang Yang Xinghao Liu Bo Qiu Tong Zhang Haipu Li Wenbo Zhao |
| author_sort | Mengsi Cheng |
| collection | DOAJ |
| description | MIL-100(Fe) was modified by amino groups (MIL-100(Fe)-NH2) to enhance the removal of antimonate (Sb(V)) with low concentration (50−200 μg/L) from natural water through batch adsorption experiments. With the initial Sb(V) concentration up to 200 μg/L, the residual Sb(V) concentration after treated by MIL-100(Fe)-NH2 was only 3.52 ± 0.131 μg/L, lower than the drinking water standards (5 μg/L) in China, while that was much higher (94.2 ± 3.52 μg/L) after pristine MIL-100(Fe) treatment. Based on results of XPS analysis, and adsorption kinetics and isotherms, we concluded that Sb(V) substituted the terminal −OH groups of MIL-100(Fe) to form inner-sphere complexes by coordination reactions with Fe nodes and be adsorbed by hydrogen bonding as well. The grafted amino groups (−NH2) adsorbed Sb(V) by hydrogen bonding and facilitated the coordination reactions between Sb(V) and Fe nodes. The higher KL value (0.0116 ± 0.00,118 L/μg) obtained by fitting with the Langmuir isotherm model, while that of unmodified MIL-100(Fe) was 4.74 × 10−4 ± 5.85 × 10−5 L/μg, also confirmed that the −NH2 groups greatly enhanced the affinity between MIL-100(Fe) and Sb(V). Furthermore, MIL-100(Fe)-NH2 still worked nicely in a wide pH range (2 − 12), with varied ionic strength (0.05 µmol/L−1.5 mol/L), coexisting ions (CO32−, NO3−, SO42−, Cl−, H2PO4−), and even in the real water bodies. Additionally, MIL-100(Fe)-NH2 exhibited good reusability and low Fe leaching (99.92 μg/L). We hope MIL-100(Fe)-NH2 become a candidate for effective removal of Sb(V), even other heavy metals from natural waterbodies. |
| first_indexed | 2024-04-09T14:12:24Z |
| format | Article |
| id | doaj.art-cca9395c6009469a9479a03d67517ae6 |
| institution | Directory Open Access Journal |
| issn | 2666-8211 |
| language | English |
| last_indexed | 2024-04-09T14:12:24Z |
| publishDate | 2023-05-01 |
| publisher | Elsevier |
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| series | Chemical Engineering Journal Advances |
| spelling | doaj.art-cca9395c6009469a9479a03d67517ae62023-05-06T04:39:08ZengElsevierChemical Engineering Journal Advances2666-82112023-05-0114100458Grafting amino groups to enhance the adsorption of antimonate by MIL-100(Fe) for from natural water: Performance and mechanismMengsi Cheng0Ying Fang1Zhaoguang Yang2Xinghao Liu3Bo Qiu4Tong Zhang5Haipu Li6Wenbo Zhao7College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China; Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Changsha 410083, ChinaCollege of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China; Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Changsha 410083, ChinaCollege of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China; Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Changsha 410083, ChinaCollege of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China; Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Changsha 410083, ChinaCollege of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China; Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Changsha 410083, ChinaState Key Laboratory of NBC Protection for Civilian, Beijing, 102205, ChinaCollege of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China; Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Changsha 410083, China; Corresponding author.State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China; Corresponding author.MIL-100(Fe) was modified by amino groups (MIL-100(Fe)-NH2) to enhance the removal of antimonate (Sb(V)) with low concentration (50−200 μg/L) from natural water through batch adsorption experiments. With the initial Sb(V) concentration up to 200 μg/L, the residual Sb(V) concentration after treated by MIL-100(Fe)-NH2 was only 3.52 ± 0.131 μg/L, lower than the drinking water standards (5 μg/L) in China, while that was much higher (94.2 ± 3.52 μg/L) after pristine MIL-100(Fe) treatment. Based on results of XPS analysis, and adsorption kinetics and isotherms, we concluded that Sb(V) substituted the terminal −OH groups of MIL-100(Fe) to form inner-sphere complexes by coordination reactions with Fe nodes and be adsorbed by hydrogen bonding as well. The grafted amino groups (−NH2) adsorbed Sb(V) by hydrogen bonding and facilitated the coordination reactions between Sb(V) and Fe nodes. The higher KL value (0.0116 ± 0.00,118 L/μg) obtained by fitting with the Langmuir isotherm model, while that of unmodified MIL-100(Fe) was 4.74 × 10−4 ± 5.85 × 10−5 L/μg, also confirmed that the −NH2 groups greatly enhanced the affinity between MIL-100(Fe) and Sb(V). Furthermore, MIL-100(Fe)-NH2 still worked nicely in a wide pH range (2 − 12), with varied ionic strength (0.05 µmol/L−1.5 mol/L), coexisting ions (CO32−, NO3−, SO42−, Cl−, H2PO4−), and even in the real water bodies. Additionally, MIL-100(Fe)-NH2 exhibited good reusability and low Fe leaching (99.92 μg/L). We hope MIL-100(Fe)-NH2 become a candidate for effective removal of Sb(V), even other heavy metals from natural waterbodies.http://www.sciencedirect.com/science/article/pii/S2666821123000157AntimonyAdsorptionAmino groupsMIL-100(Fe)Natural water |
| spellingShingle | Mengsi Cheng Ying Fang Zhaoguang Yang Xinghao Liu Bo Qiu Tong Zhang Haipu Li Wenbo Zhao Grafting amino groups to enhance the adsorption of antimonate by MIL-100(Fe) for from natural water: Performance and mechanism Chemical Engineering Journal Advances Antimony Adsorption Amino groups MIL-100(Fe) Natural water |
| title | Grafting amino groups to enhance the adsorption of antimonate by MIL-100(Fe) for from natural water: Performance and mechanism |
| title_full | Grafting amino groups to enhance the adsorption of antimonate by MIL-100(Fe) for from natural water: Performance and mechanism |
| title_fullStr | Grafting amino groups to enhance the adsorption of antimonate by MIL-100(Fe) for from natural water: Performance and mechanism |
| title_full_unstemmed | Grafting amino groups to enhance the adsorption of antimonate by MIL-100(Fe) for from natural water: Performance and mechanism |
| title_short | Grafting amino groups to enhance the adsorption of antimonate by MIL-100(Fe) for from natural water: Performance and mechanism |
| title_sort | grafting amino groups to enhance the adsorption of antimonate by mil 100 fe for from natural water performance and mechanism |
| topic | Antimony Adsorption Amino groups MIL-100(Fe) Natural water |
| url | http://www.sciencedirect.com/science/article/pii/S2666821123000157 |
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