Effect of Calcinations Temperature on Structural Properties, Phase Transformation and Photocatalytic Activity of Electrospun TiO₂ Nanofibers

Abstract:

TiO₂ nanofibers were fabricated via an electrospinning method. Titanium (IV) isopropoxide (TIP) and poly (viny pyrrolidone) (PVP) were used as a starting precursor. The electrospun TiO₂ nanofibers were obtained by injecting the precursor through a needle under a strong electrical field. As-spun fibers were calcined at 500, 600, 700, 800 and 900 °C for 2 h. The structural of properties of the nanofibers were characterized using X-ray diffraction (XRD) and Scanning electron microscope (SEM). XRD results indicated that the crystallinity of TiO₂ nanofibers corresponds to rutile and anatase phase of TiO₂ depending on calcinations temperature. SEM results indicated that the surface morphology and size TiO₂ nanofibers. The photocatalytic degradation of RhB may be attributed to significant absorption enhancement in visible region by phase transformation of TiO₂ nanofibers and fiber size dependence active surface areas.

• Periodical: Advanced Materials Research (Volume 802)
• Pages: 247-251
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.802.247
• Online since: September 2013
• Authors: Sineenart Suphankij, Wanichaya Mekprasart, Wisanu Pecharapa
• Keywords: Electro-Spinning, Photocatalytic, TiO₂ Nanofiber

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