Academic Journal
Hybrid vinyl silane and P123 template sol−gel derived carbon silica membrane for desalination
| العنوان: | Hybrid vinyl silane and P123 template sol−gel derived carbon silica membrane for desalination |
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| المؤلفون: | Yang, Hong, Wang, David K., Motuzas, Julius, Diniz da Costa, João C. |
| بيانات النشر: | Springer New York |
| سنة النشر: | 2017 |
| المجموعة: | The University of Queensland: UQ eSpace |
| مصطلحات موضوعية: | Carbon silica, Desalination membrane, Interlayer-free, P123 template, Vinyl silane precursor, 1600 Chemistry, 2502 Biomaterials, 2503 Ceramics and Composites, 2504 Electronic, Optical and Magnetic Materials, 2505 Materials Chemistry, 3104 Condensed Matter Physics |
| الوصف: | Mesoporous, interlayer-free, hybrid carbon-silica membranes based on organosilica of triethoxyvinylsilane (TEVS) and pluronic triblock copolymer poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (P123) were successfully prepared by modified acid-base catalysed sol–gel method. Xerogels and membranes were pyrolyzed under inert conditions in vacuum and nitrogen to form the hybrid carbon silica structures. FTIR analyses showed the presence of Si–C groups in addition to silanol and siloxane groups for samples pyrolysed at 450 °C. Vacuum pyrolyzed xerogels produced slightly higher pore volumes than that of the nitrogen pyrolyzed samples. As a result, the vacuum pyrolyzed membranes produced highest water fluxes compared to the nitrogen pyrolyzed membranes. Best water fluxes were measured at 6.26 (1 wt%, 60 °C) and 2.92 (15 wt%, 60 °C) L m h with salt rejections of 99.7% and 99.9%, respectively. This study demonstrates that the combined strategy of a sol–gel synthesis containing vinyl organosilica and polymeric template followed by vacuum pyrolysis conferred the carbonized silica membranes with excellent selectivity of water from the hydrated salt ions and reasonable water fluxes for water desalination applications. Graphical abstract: [InlineMediaObject not available: see fulltext.] |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 1573-4846 0928-0707 |
| Relation: | orcid:0000-0002-0294-7738; orcid:0000-0003-0759-1301; 2017QNB05; DP110101185; DE150101687; FT130100405 |
| الاتاحة: | https://espace.library.uq.edu.au/view/UQ:713292 |
| رقم الانضمام: | edsbas.417B97ED |
| قاعدة البيانات: | BASE |
| تدمد: | 15734846 09280707 |
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