Effect of void structure of photocatalyst paper on VOC decomposition

Shuji Fukahori, Yumi Iguchi, Hideaki Ichiura, Takuya Kitaoka, Hiroo Tanaka, Hiroyuki Wariishi

研究成果: ジャーナルへの寄稿学術誌査読

52 被引用数 (Scopus)

抄録

TiO2 powder-containing paper composites, called TiO2 paper, were prepared by a papermaking technique, and their photocatalytic efficiency was investigated. The TiO2 paper has a porous structure originating from the layered pulp fiber network, with TiO2 powders scattered on the fiber matrix. Under UV irradiation, the TiO2 paper decomposed gaseous acetaldehyde more effectively than powdery TiO2 and a pulp/TiO2 mixture not in paper form. Scanning electron microscopy and mercury intrusion analysis revealed that the TiO2 paper had characteristic unique voids ca. 10 μm in diameter, which might have contributed to the improved photocatalytic performance. TiO2 paper composites having different void structures were prepared by using beaten pulp fibers with different degrees of freeness and/or ceramic fibers. The photodecomposition efficiency was affected by the void structure of the photocatalyst paper, and the initial degradation rate of acetaldehyde increased with an increase in the total pore volume of TiO2 paper. The paper voids presumably provided suitable conditions for TiO2 catalysis, resulting in higher photocatalytic performance by TiO2 paper than by TiO2 powder and a pulp/TiO2 mixture not in paper form.

本文言語英語
ページ(範囲)2136-2141
ページ数6
ジャーナルChemosphere
66
11
DOI
出版ステータス出版済み - 2月 2007

!!!All Science Journal Classification (ASJC) codes

  • 環境工学
  • 環境化学
  • 化学 (全般)
  • 汚染
  • 健康、毒物学および変異誘発

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