Multichannel TiO2 hollow fibers with enhanced photocatalytic activity

被引：140

作者：

Zhao, Tianyi ^{[1
,3
]}

Liu, Zhaoyue ^{[2
]}

Nakata, Kazuya ^{[2
]}

Nishimoto, Shunsuke ^{[2
]}

Murakami, Taketoshi ^{[2
]}

Zhao, Yong ^{[1
]}

Jiang, Lei ^{[1
]}

Fujishima, Akira ^{[2
]}

机构：

[1] Inst Chem Beijing, Key Lab Organ Solid, BNLMS, Beijing 100190, Peoples R China

[2] Kanagawa Acad Sci & Technol, Takatsu Ku, Kanagawa 2130012, Japan

[3] Chinese Acad Sci, Grad Sch, Beijing 100190, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2010年 / 20卷 / 24期

关键词：

GASEOUS ACETALDEHYDE; FILM PHOTOCATALYST; DEGRADATION; TITANIA; ARRAYS; ELECTRODE; WATER;

D O I：

10.1039/c0jm00484g

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：5095 / 5099

页数：5

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