Preparation, photocatalytic activities, and dye-sensitized solar-cell performance of submicron-scale TiO2 hollow spheres

被引：233

作者：

Kondo, Yoshihiko ^{[1
,2
]}

Yoshikawa, Hirofumi ^{[1
,2
]}

Awaga, Kunio ^{[1
,2
]}

Murayama, Masaki ^{[3
]}

Mori, Tatsuo ^{[3
]}

Sunada, Kayano ^{[4
]}

Bandow, Shunji ^{[5
]}

Iijima, Sumio ^{[5
]}

机构：

[1] Nagoya Univ, Res Ctr Mat Sci, Nagoya, Aichi 4648602, Japan

[2] Nagoya Univ, Dept Chem, Nagoya, Aichi 4648602, Japan

[3] Nagoya Univ, Grad Sch Engn, Dept Elect Engn & Comp Sci, Nagoya, Aichi 4648603, Japan

[4] Univ Tokyo, Japan Res Ctr Adv Sci & Technol, Meguro Ku, Tokyo 1538904, Japan

[5] Meijo Univ, Fac Sci & Technol, Dept Mat Sci & Engn, Nagoya, Aichi 4688502, Japan

来源：

LANGMUIR | 2008年 / 24卷 / 02期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1021/la702157r

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We prepared submicron-scale spherical hollow particles of anatase TiO2 by using a polystyrene-bead template. The obtained particles were very uniform in size, with a diameter of 490 rim and a shell thickness of 30 nm. The Brunauer-Emmett-Teller surface area measurements revealed a large value of 70 m(2)/g. The photocatalytic property was investigated by the complete decomposition of gaseous isopropyl alcohol under UV irradiation. It was indicated that the activity of the hollow spheres was 1.8 times higher than that of the conventional P25 TiO2 nanoparticles with a diameter of 30 nm. Furthermore, we fabricated a dye-sensitized solar cell (DSC) using an electrode of the TiO2 hollow spheres, and examined the photovoltaic performance Under simulated sunlight. Although the per-area efficiency was rather low (1.26%) because of a low area density of TiO2 on the electrode, the per-weight efficiency was 2.5 times higher than those of the conventional DSCs of TiO2.

引用

页码：547 / 550

页数：4

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