A novel approach to formulate high flux multifunctional ultrafiltration membranes from photocatalytic titania composite precursors on multi-channel tubular substrates
© 2016 The Royal Society of Chemistry.Anatase rich titanium dioxide ultrafiltration membranes with high filtration rates have been successfully developed on multi-channel tubular alumina substrates via aqueous sol-gel method from titania-alumina composite precursors containing 30 wt% alumina. The co...
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| Format: | Journal Article |
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Royal Society of Chemistry
2016
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| Online Access: | http://hdl.handle.net/20.500.11937/31906 |
| _version_ | 1848753514307649536 |
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| author | Manjumol, K. Sankar, S. Nair, Balagopal Midhun, M. Mohamed, P. Warrier, K. |
| author_facet | Manjumol, K. Sankar, S. Nair, Balagopal Midhun, M. Mohamed, P. Warrier, K. |
| author_sort | Manjumol, K. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2016 The Royal Society of Chemistry.Anatase rich titanium dioxide ultrafiltration membranes with high filtration rates have been successfully developed on multi-channel tubular alumina substrates via aqueous sol-gel method from titania-alumina composite precursors containing 30 wt% alumina. The composite membrane material exhibited anatase phase stability above 800 °C and retained a BET surface area of 64 m2 g-1 even after calcination at 700 °C. Supported membranes on multi-channel substrates with an active layer thickness of 4 µm gave a water flux value of 215 L m-2 h-1 coupled with 80% rejection of Bovine Serum Albumin (BSA) with molecular weight 66 kD at 2 bar pressure. This is much higher compared to a flux of 27 L m-2 h-1 obtained for a single component titania membrane layer. The composite membrane materials showed excellent photocatalytic activity under UV irradiation such that a solution containing Methylene Blue (MB) dye showed 96% dye degradation within 2 h. Porous disc shaped substrates coated with the active titania composite layer showed methylene blue degradation of 44% under identical conditions. The present results point towards an excellent pathway for the development of multifunctional ultra-filtration membranes for water purification and also for other separation applications where separation together with photocatalysis will be of great importance. |
| first_indexed | 2025-11-14T08:25:43Z |
| format | Journal Article |
| id | curtin-20.500.11937-31906 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:25:43Z |
| publishDate | 2016 |
| publisher | Royal Society of Chemistry |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-319062017-09-13T15:15:33Z A novel approach to formulate high flux multifunctional ultrafiltration membranes from photocatalytic titania composite precursors on multi-channel tubular substrates Manjumol, K. Sankar, S. Nair, Balagopal Midhun, M. Mohamed, P. Warrier, K. © 2016 The Royal Society of Chemistry.Anatase rich titanium dioxide ultrafiltration membranes with high filtration rates have been successfully developed on multi-channel tubular alumina substrates via aqueous sol-gel method from titania-alumina composite precursors containing 30 wt% alumina. The composite membrane material exhibited anatase phase stability above 800 °C and retained a BET surface area of 64 m2 g-1 even after calcination at 700 °C. Supported membranes on multi-channel substrates with an active layer thickness of 4 µm gave a water flux value of 215 L m-2 h-1 coupled with 80% rejection of Bovine Serum Albumin (BSA) with molecular weight 66 kD at 2 bar pressure. This is much higher compared to a flux of 27 L m-2 h-1 obtained for a single component titania membrane layer. The composite membrane materials showed excellent photocatalytic activity under UV irradiation such that a solution containing Methylene Blue (MB) dye showed 96% dye degradation within 2 h. Porous disc shaped substrates coated with the active titania composite layer showed methylene blue degradation of 44% under identical conditions. The present results point towards an excellent pathway for the development of multifunctional ultra-filtration membranes for water purification and also for other separation applications where separation together with photocatalysis will be of great importance. 2016 Journal Article http://hdl.handle.net/20.500.11937/31906 10.1039/c6ra14117j Royal Society of Chemistry restricted |
| spellingShingle | Manjumol, K. Sankar, S. Nair, Balagopal Midhun, M. Mohamed, P. Warrier, K. A novel approach to formulate high flux multifunctional ultrafiltration membranes from photocatalytic titania composite precursors on multi-channel tubular substrates |
| title | A novel approach to formulate high flux multifunctional ultrafiltration membranes from photocatalytic titania composite precursors on multi-channel tubular substrates |
| title_full | A novel approach to formulate high flux multifunctional ultrafiltration membranes from photocatalytic titania composite precursors on multi-channel tubular substrates |
| title_fullStr | A novel approach to formulate high flux multifunctional ultrafiltration membranes from photocatalytic titania composite precursors on multi-channel tubular substrates |
| title_full_unstemmed | A novel approach to formulate high flux multifunctional ultrafiltration membranes from photocatalytic titania composite precursors on multi-channel tubular substrates |
| title_short | A novel approach to formulate high flux multifunctional ultrafiltration membranes from photocatalytic titania composite precursors on multi-channel tubular substrates |
| title_sort | novel approach to formulate high flux multifunctional ultrafiltration membranes from photocatalytic titania composite precursors on multi-channel tubular substrates |
| url | http://hdl.handle.net/20.500.11937/31906 |