Electrospinning preparation and characterization of alumina nanofibers with high aspect ratio |
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| Affiliation: | 1. Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT 84602, USA;2. Department of Chemical Engineering, Brigham Young University, Provo, UT 84602, USA;1. Faculty of Chemistry, University of Sciences and Technology Houari Boumediene, PO Box 32, El Alia, 16111 Bab Ezzouar, Algiers, Algeria;2. Laboratory of General Chemistry, Building 462, Paris- Sud University, 91405 Orsay Cedex, France |
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| Abstract: | Alumina nanofibers were successfully prepared via an electrospinning technique combined with a sol–gel method. The electrospinning solution was prepared by dissolving aluminum isopropoxide (AIP) in distilled water and then mixing with a polyvinyl alcohol (PVA) aqueous solution. The as-spun fibers were calcined at different temperatures and characterized by TG–DTA, XRD, SEM–EDS, TEM–SAED, and BET analysis. Results showed that the average fiber diameter decreases with increasing calcination temperature. The as-spun nanofibers were amorphous. After calcination at 1000 °C, the nanofibers formed were composed of α-Al2O3 and γ-Al2O3, showing an average diameter of 30–90 nm and an aspect ratio of greater than 1000. The pore size of the obtained fibers was approximately 5 nm, which implies that these fibers are mesoporous materials. |
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| Keywords: | A. Calcination Alumina Nanofibers Electrospinning Sol–gel |
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