Issue 24, 2010
From the journal:

Journal of Materials Chemistry

Multichannel TiO2 hollow fibers with enhanced photocatalytic activity

Tianyi Zhao,ac   Zhaoyue Liu,b   Kazuya Nakata,b   Shunsuke Nishimoto,b   Taketoshi Murakami,b   Yong Zhao,*a   Lei Jianga  and  Akira Fujishima*b  

* Corresponding authors

a Beijing National Laboratory for Molecular Sciences (BNLMS), Key laboratory of Organic Solid,, Institute of Chemistry, Beijing, China
E-mail: zhaoyong@iccas.ac.cn
Fax: +86-10-82627566
Tel: +86-10-82621396

b Kanagawa Academy of Science and Technology, KSP Building West 614, -2-1 Sakado, Takatsu-ku, Kanagawa, Japan
E-mail: fujishima@newkast.or.jp

c Graduate School of the Chinese Academy of Sciences, Beijing, China

Abstract

This work describes that the photocatalytic activity of microsized TiO2 fibers for degrading gaseous acetaldehyde can be systematically enhanced by introducing nanostructured interior hollow channels, which is achieved by a facile multifluidic electrospinning method. The increased channel number augments the BET surface area of TiO2 fibers intuitively. A quite interesting phenomenon is that the percentage increase for photocatalytic activity is higher than that for surface area. It is thus proposed that the multichannel hollow structures induce not only an inner trap effect on gaseous molecules, but also a multiple-reflection effect on incident light, which further improves the photocatalytic activity of TiO2 hollow fibers.

Graphical abstract: Multichannel TiO2 hollow fibers with enhanced photocatalytic activity

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Article information

DOI
https://doi.org/10.1039/C0JM00484G
Article type
Paper
Submitted
23 Feb 2010
Accepted
16 Apr 2010
First published
14 May 2010

J. Mater. Chem., 2010,20, 5095-5099

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Multichannel TiO2 hollow fibers with enhanced photocatalytic activity

T. Zhao, Z. Liu, K. Nakata, S. Nishimoto, T. Murakami, Y. Zhao, L. Jiang and A. Fujishima, J. Mater. Chem., 2010, 20, 5095 DOI: 10.1039/C0JM00484G

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