Issue 4, 2011
From the journal:

Energy & Environmental Science

Design of macroporous TiO2 thin film photocatalysts with enhanced photofunctional properties†

Takashi Kamegawa,a   Norihiko Suzukia  and  Hiromi Yamashita*a  

* Corresponding authors

a Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka
E-mail: yamashita@mat.eng.osaka-u.ac.jp
Fax: +81-6-6879-7460
Tel: +81-6-6879-7457

Abstract

TiO2 thin films with uniform macropores were successfully prepared on quartz substrates by a dip-coating method using poly(methyl methacrylate) (PMMA) microspheres as a template. SEM observations revealed that the diameter of the macropores showed a good correspondence with the size of the PMMA microspheres. These thin films had anatase crystalline structures and maintained relatively high transparency. The degradation of organic pollutants such as 2-propanol and acetaldehyde under UV light was significantly enhanced by the construction of the macropores. It was also found that TiO2 thin films with macropores exhibited good photoinduced hydrophilicity after a short period of UV light irradiation, and a slow recovery of water contact angles in the dark as compared to those of non-porous TiO2 thin films.

Graphical abstract: Design of macroporous TiO2 thin film photocatalysts with enhanced photofunctional properties

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Article information

DOI
https://doi.org/10.1039/C0EE00389A
Article type
Paper
Submitted
27 Aug 2010
Accepted
20 Dec 2010
First published
31 Jan 2011

Energy Environ. Sci., 2011,4, 1411-1416

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Design of macroporous TiO2 thin film photocatalysts with enhanced photofunctional properties

T. Kamegawa, N. Suzuki and H. Yamashita, Energy Environ. Sci., 2011, 4, 1411 DOI: 10.1039/C0EE00389A

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