Preparation of polyethyleneimine/graphene oxide membranes and their adsorptions for Pb(II), Cu(II) and Zn(II) in mixed systems
A series of novel polyethyleneimine/graphene oxide (PEI@GO) membranes were prepared and their adsorptions for heavy metal ions in mixed solutions were examined. It was found that they had good sorption performances for Pb(II), Cu(II), and Zn(II) in water. Their adsorptions for Pb(II), Cu(II), and Zn...
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Elsevier
2025-04-01
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| Series: | Desalination and Water Treatment |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1944398625001158 |
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| author | Jingyi Chen Xiaoxue Zhang Junsheng Liu Shan Jiang Chunyu Ji Jie Zhang |
| author_facet | Jingyi Chen Xiaoxue Zhang Junsheng Liu Shan Jiang Chunyu Ji Jie Zhang |
| author_sort | Jingyi Chen |
| collection | DOAJ |
| description | A series of novel polyethyleneimine/graphene oxide (PEI@GO) membranes were prepared and their adsorptions for heavy metal ions in mixed solutions were examined. It was found that they had good sorption performances for Pb(II), Cu(II), and Zn(II) in water. Their adsorptions for Pb(II), Cu(II), and Zn(II) obeyed the first-order kinetic modeling, dominating a physical style. Meanwhile, the fitting of intra-particle diffusion showed that Pb(II) and Cu(II) did not conform to the intra-particle diffusion stage, whereas Zn(II) did. Moreover, it was confirmed that the sorption of PEI@GO membranes for Pb(II), Cu(II), and Zn(II) followed the Langmuir isotherm modeling, and the maximal values could reach 79.6 mg/g for Pb(II), 35.01 mg/g for Cu(II), and 32.27 mg/g for Zn(II), respectively. The calculation of thermodynamic parameters indicated that these adsorptions were spontaneous and endothermic processes. Further, the investigation of PEI@GO membranes for Pb(II), Cu(II), and Zn(II) in ternary mixed systems evidenced that Zn(II) can be preferentially removed via step-by-step mode. In addition, the exploration of sorption mechanism using XPS and FTIR analyses showed that ligand interactions were involved in the adsorptive removal of Pb(II), Cu(II), and Zn(II). This study discloses that PEI@GO membranes are promising adsorbents for the removal of heavy metal ions from water. |
| format | Article |
| id | doaj-art-0acdc9d7c8a1478483b204d06e4f9d53 |
| institution | OA Journals |
| issn | 1944-3986 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Elsevier |
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| series | Desalination and Water Treatment |
| spelling | doaj-art-0acdc9d7c8a1478483b204d06e4f9d532025-08-20T02:03:19ZengElsevierDesalination and Water Treatment1944-39862025-04-0132210109910.1016/j.dwt.2025.101099Preparation of polyethyleneimine/graphene oxide membranes and their adsorptions for Pb(II), Cu(II) and Zn(II) in mixed systemsJingyi Chen0Xiaoxue Zhang1Junsheng Liu2Shan Jiang3Chunyu Ji4Jie Zhang5Corresponding authors.; School of Energy, Materials and Chemical Engineering, Hefei University, Hefei 230601, ChinaSchool of Energy, Materials and Chemical Engineering, Hefei University, Hefei 230601, ChinaCorresponding authors.; School of Energy, Materials and Chemical Engineering, Hefei University, Hefei 230601, ChinaSchool of Energy, Materials and Chemical Engineering, Hefei University, Hefei 230601, ChinaSchool of Energy, Materials and Chemical Engineering, Hefei University, Hefei 230601, ChinaSchool of Energy, Materials and Chemical Engineering, Hefei University, Hefei 230601, ChinaA series of novel polyethyleneimine/graphene oxide (PEI@GO) membranes were prepared and their adsorptions for heavy metal ions in mixed solutions were examined. It was found that they had good sorption performances for Pb(II), Cu(II), and Zn(II) in water. Their adsorptions for Pb(II), Cu(II), and Zn(II) obeyed the first-order kinetic modeling, dominating a physical style. Meanwhile, the fitting of intra-particle diffusion showed that Pb(II) and Cu(II) did not conform to the intra-particle diffusion stage, whereas Zn(II) did. Moreover, it was confirmed that the sorption of PEI@GO membranes for Pb(II), Cu(II), and Zn(II) followed the Langmuir isotherm modeling, and the maximal values could reach 79.6 mg/g for Pb(II), 35.01 mg/g for Cu(II), and 32.27 mg/g for Zn(II), respectively. The calculation of thermodynamic parameters indicated that these adsorptions were spontaneous and endothermic processes. Further, the investigation of PEI@GO membranes for Pb(II), Cu(II), and Zn(II) in ternary mixed systems evidenced that Zn(II) can be preferentially removed via step-by-step mode. In addition, the exploration of sorption mechanism using XPS and FTIR analyses showed that ligand interactions were involved in the adsorptive removal of Pb(II), Cu(II), and Zn(II). This study discloses that PEI@GO membranes are promising adsorbents for the removal of heavy metal ions from water.http://www.sciencedirect.com/science/article/pii/S1944398625001158SorptionMembranePolyethyleneimineHeavy-metal ionsMixed systemsMechanism |
| spellingShingle | Jingyi Chen Xiaoxue Zhang Junsheng Liu Shan Jiang Chunyu Ji Jie Zhang Preparation of polyethyleneimine/graphene oxide membranes and their adsorptions for Pb(II), Cu(II) and Zn(II) in mixed systems Desalination and Water Treatment Sorption Membrane Polyethyleneimine Heavy-metal ions Mixed systems Mechanism |
| title | Preparation of polyethyleneimine/graphene oxide membranes and their adsorptions for Pb(II), Cu(II) and Zn(II) in mixed systems |
| title_full | Preparation of polyethyleneimine/graphene oxide membranes and their adsorptions for Pb(II), Cu(II) and Zn(II) in mixed systems |
| title_fullStr | Preparation of polyethyleneimine/graphene oxide membranes and their adsorptions for Pb(II), Cu(II) and Zn(II) in mixed systems |
| title_full_unstemmed | Preparation of polyethyleneimine/graphene oxide membranes and their adsorptions for Pb(II), Cu(II) and Zn(II) in mixed systems |
| title_short | Preparation of polyethyleneimine/graphene oxide membranes and their adsorptions for Pb(II), Cu(II) and Zn(II) in mixed systems |
| title_sort | preparation of polyethyleneimine graphene oxide membranes and their adsorptions for pb ii cu ii and zn ii in mixed systems |
| topic | Sorption Membrane Polyethyleneimine Heavy-metal ions Mixed systems Mechanism |
| url | http://www.sciencedirect.com/science/article/pii/S1944398625001158 |
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