Synthesis of mesoporous tungsten oxide nanofibers using the electrospinning method
- Title
- Synthesis of mesoporous tungsten oxide nanofibers using the electrospinning method
- Author
- 김용신
- Keywords
- Tungsten oxide; WO3 nanofiber; Electrospinning; Mesoporous materials
- Issue Date
- 2011-09
- Publisher
- Elsevier BV
- Citation
- Materials Letters, v. 65, NO. 17-18, Page. 2823-2825
- Abstract
- Mesoporous tungsten oxide nanofibers were synthesized via a 500 degrees C thermal treatment of composite nanofibers prepared by electrospinning an ethanol solution consisting of tungsten ethoxide, P123 triblock copolymer, and polyvinylpyrrolidone. The as-electrospun composites exhibited unwoven nanofibers with an average diameter of 233 nm and a smooth surface morphology. During the calcination process, the composite nanofibers were shrunk to 85 nm in diameter and converted into rough, wormhole-like nanofibers. These were formed by agglomerating polycrystalline WO3 particles of 10-30 nm along the axial direction. Furthermore, a measured pore-size distribution indicated that this nanofiber mat had different types of mesosized porosities, which may have resulted from their wormhole-like structures and inter-fiber voids. In addition, it was observed to have the intra-grain porosity with the diameter of about 1.0 nm. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.
- URI
- https://www.sciencedirect.com/science/article/pii/S0167577X11006227?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/184399
- ISSN
- 0167-577X;1873-4979
- DOI
- 10.1016/j.matlet.2011.05.103
- Appears in Collections:
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > CHEMICAL AND MOLECULAR ENGINEERING(화학분자공학과) > Articles
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