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Vol. 7 No. 3 (2015)

A Simple Method of Electrospun Tungsten Trioxide Nanofibers with Enhanced Visible-Light Photocatalytic Activity

https://doi.org/10.1007/s40820-015-0042-8
Frank Agyemang Ofori
Department of Energy Science and Technology, Energy and Environment Fusion Technology Center, Myongji University, Gyeonggi-do, Yongin 449-728, Republic of Korea
Faheem A. Sheikh
Department of Energy Science and Technology, Energy and Environment Fusion Technology Center, Myongji University, Gyeonggi-do, Yongin 449-728, Republic of Korea
Richard Appiah-Ntiamoah
Department of Energy Science and Technology, Energy and Environment Fusion Technology Center, Myongji University, Gyeonggi-do, Yongin 449-728, Republic of Korea
Xinsheng Yang
Key Laboratory of Advanced Technology of Materials, Superconductor and New Energy R&D Center, Southwest Jiaotong University, Chengdu 610031, People’s Republic of China
Hern Kim
Department of Energy Science and Technology, Energy and Environment Fusion Technology Center, Myongji University, Gyeonggi-do, Yongin 449-728, Republic of Korea

Corresponding Author: Hern Kim

hernkim@mju.ac.kr

Nano-Micro Letters, Vol. 7 No. 3 (2015), Article Number: 291-297

Abstract

The present study involves the fabrication of tungsten trioxide (WO3) nanofibers by an electrospinning technique using polyvinyl pyrrolidone (PVP)/citric acid/tungstic acid as precursor solution. It was found that the PVP concentration was one of the most crucial processing parameters determining the final properties of WO3 nanofibers. The optimum concentration of PVP was from 75 to 94 g L−1. The average diameter of the nanofibers increases with increasing the PVP concentration, whereas it is decreased after sintering and orthorhombic structure were formed at 500 °C. The photocatalytic properties of the as-synthesized nanofibers were also investigated by degrading methylene blue and twofold efficiency was obtained compared with that of commercial WO3 microparticles.

Keywords

Tungsten trioxide Electrospinning Nanofiber Photocatalysis
Ofori, Frank Agyemang, Faheem A. Sheikh, Richard Appiah-Ntiamoah, Xinsheng Yang, and Hern Kim. 2015. “A Simple Method of Electrospun Tungsten Trioxide Nanofibers With Enhanced Visible-Light Photocatalytic Activity”. Nano-Micro Letters 7 (3):291-97. https://doi.org/10.1007/s40820-015-0042-8.
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