Electrospinning preparation and characterization of alumina nanofibers with high aspect ratio. Issue 8 (September 2015)

• Record Type: Journal Article
• Authors: Tang, Xueyuan; Yu, Yuxi
• Is Part Of: Ceramics international. Volume 41:Issue 8(2015)
• Page Start: 9232
• Page End: 9238
• Publication Date: 2015-09
• Subjects: A. Calcination -- Alumina -- Nanofibers -- Electrospinning -- Sol–gel; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2015.04.157
• Languages: English
• ISSNs: 0272-8842

Abstract

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-Al2 O3 and γ-Al2 O3, 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.