NDLI: Synthesis and photocatalytic properties of SiO$_{2}$/TiO$_{2}$ nanofibers using templates of TEMPO-oxidized cellulose nanofibers

Content Provider	Springer Nature Link
Author	Gunji, Shunsuke Shimotsuma, Yasuhiko Miura, Kiyotaka
Copyright Year	2016
Abstract	SiO$_{2}$/TiO$_{2}$ nanofibers were fabricated using TEMPO-oxidized cellulose nanofibers (TOCN) as templates. SiO$_{2}$ and/or TiO$_{2}$ deposition onto the surface of TOCN was achieved by the hydrolysis and condensation reactions of two types of silicon alkoxide and a titanium alkoxide. After the combustion of TOCN templates, SiO$_{2}$/TiO$_{2}$ nanofibers with the high specific surface area of 158 m$^{2}$/g that were the composite nanofibers of TiO$_{2}$ and SiO$_{2}$ were obtained. The SiO$_{2}$/TiO$_{2}$ nanofibers have a diameter of around 8 nm and consist of a core/shell structure derived from the sequential deposition of SiO$_{2}$ and TiO$_{2}$. The structures of SiO$_{2}$ core and TiO$_{2}$ shell consist of amorphous and anatase nanocrystals, respectively. We confirmed that the synthesized SiO$_{2}$/TiO$_{2}$ nanofibers exhibit higher photocatalytic activity for degrading the cationic pollutant of methylene blue (MB) than conventional porous TiO$_{2}$ particles with a similar specific surface area. The mechanisms for the enhanced MB degradation of the SiO$_{2}$/TiO$_{2}$ nanofibers are discussed.
Starting Page	151
Ending Page	159
Page Count	9
File Format	PDF
ISSN	09280707
Journal	Journal of Sol-Gel Science and Technology
Volume Number	79
Issue Number	1
e-ISSN	15734846
Language	English
Publisher	Springer US
Publisher Date	2016-04-06
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Nanofibers Core/shell Photocatalyst TiO$_{2}$ SiO$_{2}$ Cellulose nanofibers Ceramics, Glass, Composites, Natural Methods Inorganic Chemistry Optical and Electronic Materials Nanotechnology
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Chemistry Materials Chemistry Biomaterials Condensed Matter Physics Electronic, Optical and Magnetic Materials

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