https://scholars.lib.ntu.edu.tw/handle/123456789/598243
標題: | Laminar HNb3O8-based membranes supported on anodic aluminum oxide with enhanced anti-swelling property for organic solvent nanofiltration | 作者: | Nakagawa K Kunimatsu M Yasui K Yoshioka T Shintani T Kamio E Tung K.-L Tsang S.C.E Matsuyama H. KUO-LUN TUNG |
關鍵字: | Anti-swelling;Composite laminar membranes;Dense heterolayer;Graphene oxide;HNb3O8 nanosheets;Organic solvent nanofiltration;Alumina;Aluminum oxide;Anodic oxidation;Azo dyes;Composite membranes;Distillation;Graphene;Microfiltration;Molecular dynamics;Nanosheets;Organic solvents;Permeation;Swelling;Anodic aluminum oxide;Composite laminar membrane;Energy efficient;Heterolayers;HNb3O8 nanosheet;Organic liquid;Swelling properties;Nanofiltration;alcohol;aluminum oxide;Evans blue;graphene oxide;methanol;methyl orange;nanocomposite;nanosheet;niobate nanosheet;organic solvent;solvent;unclassified drug;Article;chemical structure;colloid;controlled study;crossflow filtration;distillation;evaporation;filtration;human;laminar membrane;membrane;molecular dynamics;nanofiltration;scanning electron microscopy;separation technique;transmission electron microscopy;vacuum;viscosity;X ray photoemission spectroscopy;Aluminum Oxide;Azo Compounds;Membranes;Penetration;Solvents | 公開日期: | 2021 | 卷: | 640 | 來源出版物: | Journal of Membrane Science | 摘要: | Organic solvent nanofiltration (OSN) is an energy-efficient alternative to distillation and evaporation for the separation of mixtures containing organic liquids. Laminar membranes using nanosheets as building blocks have great potential for OSN; however, a swelling of the interlayer spacing causes a severe decrease in the separation performance. Here, we present laminar HNb3O8-based composite membranes fabricated by vacuum filtration on an anodic aluminum oxide support for OSN applications. The laminar HNb3O8 membranes and composite (graphene oxide (GO) and HNb3O8) membranes were found to possess stable structures in various alcohols without severe swelling. As a result, the HNb3O8-based membranes showed higher dye rejections than the GO membrane. Among the HNb3O8-based membranes, the layered GO/HNb3O8 membrane had superior dye rejections in methanol (89.6% for Evans blue, 73.4% for acid red 265, and 43.4% for methyl orange) compared with the GO membranes. Alcohol permeation tests implied that the molecular diameter, rather than the solvent viscosity, was the dominant factor in the superior performance of the layered GO/HNb3O8 membrane. Molecular dynamics simulations suggest a stable GO/HNb3O8 interlayer ranging from around 1.165 to 1.333 nm, and a dense heterolayer formation at the interface between the HNb3O8 and GO layers. This heterolayer formation performs important roles in alcohol permeation and separation of organic dyes. Furthermore, the layered GO/HNb3O8 membrane showed stable permeation of a model photoresist waste liquid for 6 weeks and an excellent rejection of the photoresist waste, over 91%. We propose that laminar HNb3O8-based membranes have great potential for OSN applications. ? 2021 Elsevier B.V. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85114387049&doi=10.1016%2fj.memsci.2021.119799&partnerID=40&md5=9448b10aa159e46ceee1a57ea9b15b3e https://scholars.lib.ntu.edu.tw/handle/123456789/598243 |
ISSN: | 03767388 | DOI: | 10.1016/j.memsci.2021.119799 |
顯示於: | 化學工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。