https://scholars.lib.ntu.edu.tw/handle/123456789/410381
Title: | Carbon dioxide capture using an omniphobic membrane for a gas-liquid contacting process | Authors: | Huang A. Chen L.-H. Chen C.-H. Tsai H.-Y. Tung K.-L. |
Keywords: | Chemical bath deposition;CO 2 Absorption;Membrane contactor;Omniphobic membrane | Issue Date: | 2018 | Journal Volume: | 556 | Start page/Pages: | 227-237 | Source: | Journal of Membrane Science | Abstract: | An omniphobic membrane has been successfully prepared to ensure high efficiency as well as long-term stability in a CO 2 absorption process. This omniphobic membrane was fabricated by creating a multilevel re-entrant structure via depositing ZnO nanoparticles (NPs) on a porous glass fiber (GF) membrane through chemical bath deposition (CBD). The membrane coated with ZnO NPs was then functionalized with 1 H,1 H,2 H,2H-perfluorodecyltriethoxysilane (FAS17) and coated with a polyvinylidene fluoride-hexafluoropropylene (PVDF-HFP) polymer. A variety of techniques such as capillary flow porometry (CFP), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), contact angle goniometry, atomic force microscope (AFM) and CO 2 absorption trials were conducted to explore the surface structure, chemistry and performance of the membrane. The omniphobic membrane surface with a high fluorine concentration had a strong resistance to wetting by water and organic liquids (£^ = 72.8¡V22.1 mN/m) and showed a contact angle with an amine absorbent as high as 147.8 ¡Ó 0.8¢X. In the CO 2 absorption trials, the omniphobic membrane exhibited a stable absorption flux of 2.10 ¡Ó 0.07 mmol/m 2 s for 96 h. The results indicate that the omniphobic membrane outperforms hydrophobic membranes. Thus, the omniphobic membrane has shown potential for application in large-scale CO 2 absorption in thermal power plants. ? 2018 Elsevier B.V. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/410381 | ISSN: | 03767388 | DOI: | 10.1016/j.memsci.2018.03.089 |
Appears in Collections: | 化學工程學系 |
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