Fabrication and characterization of positively charged hybrid ultrafiltration and nanofiltration membranes via the in-situ exfoliation of Mg/Al hydrotalcite
Layered double hydroxides (LDHs) recently have attracted intense research for their electric property. In particular, the exfoliation of LDHs provides a new type ultimate two-dimensional nanosheet with higher positive charge density. In this work, Mg/Al hydrotalcite was prepared and exfoliated in di...
| Main Authors: | , , |
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| Format: | Journal Article |
| Published: |
Elsevier BV
2014
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| Online Access: | http://hdl.handle.net/20.500.11937/72878 |
| _version_ | 1848762866014879744 |
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| author | Liu, Jian Yu, L. Zhang, Y. |
| author_facet | Liu, Jian Yu, L. Zhang, Y. |
| author_sort | Liu, Jian |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Layered double hydroxides (LDHs) recently have attracted intense research for their electric property. In particular, the exfoliation of LDHs provides a new type ultimate two-dimensional nanosheet with higher positive charge density. In this work, Mg/Al hydrotalcite was prepared and exfoliated in dimethylacetamide (DMAc) and then the resulting colloidal solution was used to fabricate antisymmetric membranes using polyethersulfone as membrane material via phase inversion method. Both ultrafiltration and nanofiltration membranes were prepared to investigate the effect of exfoliated Mg/Al hydrotalcite content on the membrane properties. The morphology of membranes was investigated by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Hydrophilicity, water flux, and rejections of all prepared membranes were tested and the results indicated that both ultrafiltration and nanofiltration membranes showed good separation property. Ultrafiltration membranes exhibited higher rejection (above 85%) for PEG 20000 and lower protein adsorption amount for positively charged proteins, which may be used in some separation fields of proteins. Nanofiltration membranes showed higher rejection for PEG 400 but a much lower value for MgSO4, and therefore such membrane may have a potential application in desalination for organic matter.© 2013 Elsevier B.V. |
| first_indexed | 2025-11-14T10:54:22Z |
| format | Journal Article |
| id | curtin-20.500.11937-72878 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:54:22Z |
| publishDate | 2014 |
| publisher | Elsevier BV |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-728782018-12-13T09:32:49Z Fabrication and characterization of positively charged hybrid ultrafiltration and nanofiltration membranes via the in-situ exfoliation of Mg/Al hydrotalcite Liu, Jian Yu, L. Zhang, Y. Layered double hydroxides (LDHs) recently have attracted intense research for their electric property. In particular, the exfoliation of LDHs provides a new type ultimate two-dimensional nanosheet with higher positive charge density. In this work, Mg/Al hydrotalcite was prepared and exfoliated in dimethylacetamide (DMAc) and then the resulting colloidal solution was used to fabricate antisymmetric membranes using polyethersulfone as membrane material via phase inversion method. Both ultrafiltration and nanofiltration membranes were prepared to investigate the effect of exfoliated Mg/Al hydrotalcite content on the membrane properties. The morphology of membranes was investigated by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Hydrophilicity, water flux, and rejections of all prepared membranes were tested and the results indicated that both ultrafiltration and nanofiltration membranes showed good separation property. Ultrafiltration membranes exhibited higher rejection (above 85%) for PEG 20000 and lower protein adsorption amount for positively charged proteins, which may be used in some separation fields of proteins. Nanofiltration membranes showed higher rejection for PEG 400 but a much lower value for MgSO4, and therefore such membrane may have a potential application in desalination for organic matter.© 2013 Elsevier B.V. 2014 Journal Article http://hdl.handle.net/20.500.11937/72878 10.1016/j.desal.2013.12.015 Elsevier BV restricted |
| spellingShingle | Liu, Jian Yu, L. Zhang, Y. Fabrication and characterization of positively charged hybrid ultrafiltration and nanofiltration membranes via the in-situ exfoliation of Mg/Al hydrotalcite |
| title | Fabrication and characterization of positively charged hybrid ultrafiltration and nanofiltration membranes via the in-situ exfoliation of Mg/Al hydrotalcite |
| title_full | Fabrication and characterization of positively charged hybrid ultrafiltration and nanofiltration membranes via the in-situ exfoliation of Mg/Al hydrotalcite |
| title_fullStr | Fabrication and characterization of positively charged hybrid ultrafiltration and nanofiltration membranes via the in-situ exfoliation of Mg/Al hydrotalcite |
| title_full_unstemmed | Fabrication and characterization of positively charged hybrid ultrafiltration and nanofiltration membranes via the in-situ exfoliation of Mg/Al hydrotalcite |
| title_short | Fabrication and characterization of positively charged hybrid ultrafiltration and nanofiltration membranes via the in-situ exfoliation of Mg/Al hydrotalcite |
| title_sort | fabrication and characterization of positively charged hybrid ultrafiltration and nanofiltration membranes via the in-situ exfoliation of mg/al hydrotalcite |
| url | http://hdl.handle.net/20.500.11937/72878 |