skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Co-electrospinning fabrication and photocatalytic performance of TiO{sub 2}/SiO{sub 2} core/sheath nanofibers with tunable sheath thickness

Abstract

Graphical abstract: - Highlights: • The core–sheath TiO{sub 2}/SiO{sub 2} nanofibers were fabricated by co-electrospinning technique. • The catalytic property of nanofibers with different sheath thickness was studied. • The potential methods of improving catalytic efficiency are suggested. - Abstract: In this paper, core/sheath TiO{sub 2}/SiO{sub 2} nanofibers with tunable sheath thickness were directly fabricated via a facile co-electrospinning technique with subsequent calcination at 500 °C. The morphologies and structures of core/sheath TiO{sub 2}/SiO{sub 2} nanofibers were characterized by TGA, FESEM, TEM, FTIR, XPS and BET. It was found that the 1D core/sheath nanofibers are made up of anatase–rutile TiO{sub 2} core and amorphous SiO{sub 2} sheath. The influences of SiO{sub 2} sheath and its thickness on the photoreactivity were evaluated by observing photo-degradation of methylene blue aqueous solution under the irradiation of UV light. Compared with pure TiO{sub 2} nanofibers, the core/sheath TiO{sub 2}/SiO{sub 2} nanofibers performed a better catalytic performance. That was attributed to not only efficient separation of hole–electron pairs resulting from the formation of heterojunction but also larger surface area and surface silanol group which will be useful to provide higher capacity for oxygen adsorption to generate more hydroxyl radicals. And the optimized core/sheath TiO{sub 2}/SiO{submore » 2} nanofibers with a sheath thickness of 37 nm exhibited the best photocatalytic performance.« less

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
OSTI Identifier:
22285203
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 48; Journal Issue: 11; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; HYDROXYL RADICALS; METHYLENE BLUE; NANOSTRUCTURES; PHOTOCATALYSIS; SILICA; SILICON OXIDES; SURFACE AREA; SURFACES; SYNTHESIS; THERMAL GRAVIMETRIC ANALYSIS; THICKNESS; TITANIUM OXIDES; ULTRAVIOLET RADIATION

Citation Formats

Cao, Houbao, Du, Pingfan, Song, Lixin, Xiong, Jie, Yang, Junjie, Xing, Tonghai, Liu, Xin, Wu, Rongrong, Wang, Minchao, and Shao, Xiaoli. Co-electrospinning fabrication and photocatalytic performance of TiO{sub 2}/SiO{sub 2} core/sheath nanofibers with tunable sheath thickness. United States: N. p., 2013. Web. doi:10.1016/J.MATERRESBULL.2013.08.035.
Cao, Houbao, Du, Pingfan, Song, Lixin, Xiong, Jie, Yang, Junjie, Xing, Tonghai, Liu, Xin, Wu, Rongrong, Wang, Minchao, & Shao, Xiaoli. Co-electrospinning fabrication and photocatalytic performance of TiO{sub 2}/SiO{sub 2} core/sheath nanofibers with tunable sheath thickness. United States. https://doi.org/10.1016/J.MATERRESBULL.2013.08.035
Cao, Houbao, Du, Pingfan, Song, Lixin, Xiong, Jie, Yang, Junjie, Xing, Tonghai, Liu, Xin, Wu, Rongrong, Wang, Minchao, and Shao, Xiaoli. 2013. "Co-electrospinning fabrication and photocatalytic performance of TiO{sub 2}/SiO{sub 2} core/sheath nanofibers with tunable sheath thickness". United States. https://doi.org/10.1016/J.MATERRESBULL.2013.08.035.
@article{osti_22285203,
title = {Co-electrospinning fabrication and photocatalytic performance of TiO{sub 2}/SiO{sub 2} core/sheath nanofibers with tunable sheath thickness},
author = {Cao, Houbao and Du, Pingfan and Song, Lixin and Xiong, Jie and Yang, Junjie and Xing, Tonghai and Liu, Xin and Wu, Rongrong and Wang, Minchao and Shao, Xiaoli},
abstractNote = {Graphical abstract: - Highlights: • The core–sheath TiO{sub 2}/SiO{sub 2} nanofibers were fabricated by co-electrospinning technique. • The catalytic property of nanofibers with different sheath thickness was studied. • The potential methods of improving catalytic efficiency are suggested. - Abstract: In this paper, core/sheath TiO{sub 2}/SiO{sub 2} nanofibers with tunable sheath thickness were directly fabricated via a facile co-electrospinning technique with subsequent calcination at 500 °C. The morphologies and structures of core/sheath TiO{sub 2}/SiO{sub 2} nanofibers were characterized by TGA, FESEM, TEM, FTIR, XPS and BET. It was found that the 1D core/sheath nanofibers are made up of anatase–rutile TiO{sub 2} core and amorphous SiO{sub 2} sheath. The influences of SiO{sub 2} sheath and its thickness on the photoreactivity were evaluated by observing photo-degradation of methylene blue aqueous solution under the irradiation of UV light. Compared with pure TiO{sub 2} nanofibers, the core/sheath TiO{sub 2}/SiO{sub 2} nanofibers performed a better catalytic performance. That was attributed to not only efficient separation of hole–electron pairs resulting from the formation of heterojunction but also larger surface area and surface silanol group which will be useful to provide higher capacity for oxygen adsorption to generate more hydroxyl radicals. And the optimized core/sheath TiO{sub 2}/SiO{sub 2} nanofibers with a sheath thickness of 37 nm exhibited the best photocatalytic performance.},
doi = {10.1016/J.MATERRESBULL.2013.08.035},
url = {https://www.osti.gov/biblio/22285203}, journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 11,
volume = 48,
place = {United States},
year = {Fri Nov 15 00:00:00 EST 2013},
month = {Fri Nov 15 00:00:00 EST 2013}
}