Characterization of UiO-67 Decoration onto UV-crosslinkedpoly(vinyl alcohol) Nanofibes for Adsorption Application 


Vol. 23,  No. 1, pp. 58-67, Jan.  2022
10.1007/s12221-021-1417-8


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  Abstract

The applications of poly(vinyl alcohol) for remediation of aqueous systems are limited by its solubility. UV crosslinking was initiated using TiO2 and ZnO as photo-catalysts and citric acid as cross-linker during electrospinning of poly(vinyl alcohol) nanofibers. The UiO-67 metal-organic framework was loaded for enhancing adsorption capability. The concentrations of TiO2, ZnO, and citric acid all affected both swelling and solubility. The optimal conditions for photocrosslinking of poly(vinyl alcohol) nanofibers were 2 %wt of TiO2 and 7.5 %wt of citric acid. This provided insoluble continuous fibers of 60 to 120 nm with a smooth surface. The UiO-67 metal-organic framework was successfully synthesized with high purity using a modified sonochemical method which exposed the UiO-67 to ultrasonic waves for 30 min at room temperature. The synthesized UiO-67 exhibited a cubic close-packed structure. UiO-67 of up to 7 %wt was incorporated into the poly(vinyl alcohol), producing the crosslinked- poly(vinyl alcohol) composite nanofibers containing UiO-67. The composite nanofibers had a higher specific surface area and smaller pore size than the neat poly(vinyl alcohol) nanofibers. This could be due to UiO-67 incorporation producing micropores, which increased the surface area and enhanced phosphate removal.

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  Cite this article

[IEEE Style]

J. Pukkao, P. Pisitsak, W. Inprasit, T. Inprasit, "Characterization of UiO-67 Decoration onto UV-crosslinkedpoly(vinyl alcohol) Nanofibes for Adsorption Application," Fibers and Polymers, vol. 23, no. 1, pp. 58-67, 2022. DOI: 10.1007/s12221-021-1417-8.

[ACM Style]

Jarinphorn Pukkao, Penwisa Pisitsak, Worapat Inprasit, and Thitirat Inprasit. 2022. Characterization of UiO-67 Decoration onto UV-crosslinkedpoly(vinyl alcohol) Nanofibes for Adsorption Application. Fibers and Polymers, 23, 1, (2022), 58-67. DOI: 10.1007/s12221-021-1417-8.

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