https://scholars.lib.ntu.edu.tw/handle/123456789/598239
標題: | Synthesizing various organic polyacid compounds for modifying forward osmosis membranes to enhance separation performance | 作者: | Lin Y.-L Samannan B Tung K.-L Thavasikani J Dong C.-D Chen C.-W Wu C.-H Cheng Y.-R. KUO-LUN TUNG |
關鍵字: | Forward osmosis (FO);Hybrid material;Organic compound;Polyacid;Polyamide modification;Thin-film nanocomposite (TFN) membrane;Fourier transform infrared spectroscopy;Graphene;Hybrid materials;Hydrophilicity;Nanocomposite films;Oxide minerals;Separation;TiO2 nanoparticles;Titanium dioxide;Characteristic peaks;Forward osmosis membrane;Forward osmosis membranes;Fourier transform infra reds;Hydrophilic nanoparticles;Membrane modification;Separation performance;Thin-film nanocomposites;Osmosis membranes | 公開日期: | 2021 | 卷: | 11 | 期: | 8 | 來源出版物: | Membranes | 摘要: | In order to overcome the challenges of low permeate flux (Jp) and the accompanying reverse solute flux (JS) during the forward osmosis (FO) membrane separation process, we synthesized four hybrid materials of polyacid-based organic compounds and incorporated them into the selective polyamide (PA) layer to make novel thin-film nanocomposite (TFN) FO membranes. The Jp and JS of each membrane were evaluated and used along with membrane selectivity (Jp /JS) as indicators of membrane separation performance. The fabricated and modified membranes were also characterized for ridge and valley surface morphologies with increasing hydrophilicity and finger-shaped parallel channels in the PSf substrate. Moreover, two highly hydrophilic nanoparticles of graphene oxide (GO) and titanium oxide (TiO2) were introduced with the hybrid materials for PA modification, which can further enhance the Jp of the TFN membranes. The highest Jp of the TFN membranes achieved 12.1 L/m2-h using 0.1% curcumin-acetoguanamine @ cerium polyacid (CATCP) and 0.0175% GO. The characteristic peaks of the hybrid materials were detected on the membrane surface using atten-uated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy, evidencing successful incorporation of the hybrid materials during membrane modification. Here, we present the novel TFN membranes using hybrid materials for separation applications. The reactions for synthesizing the hybrid materials and for incorporating them with PA layer are proposed. ? 2021 by the authors. Licensee MDPI, Basel, Switzerland. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85112781018&doi=10.3390%2fmembranes11080597&partnerID=40&md5=c925e4f62737c5377fd3f39f9f8e68da https://scholars.lib.ntu.edu.tw/handle/123456789/598239 |
ISSN: | 20770375 | DOI: | 10.3390/membranes11080597 |
顯示於: | 化學工程學系 |
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