Photocatalytic properties of porous TiO2/Ag thin films

Chung-Chieh Chang, Jing Yi Chen, Tzu Ling Hsu, Chung Kwei Lin, Chih Chieh Chan

研究成果: 雜誌貢獻文章同行評審

59 引文 斯高帕斯(Scopus)

摘要

In this study, nanocrystalline TiO2/Ag composite thin films were prepared by a sol-gel spin-coating technique. By introducing polystyrene (PS) spheres into the precursor solution, porous TiO2/Ag thin films were prepared after calcination at a temperature of 500 °C for 4 h. Three different sizes (50, 200, and 400 nm) of PS spheres were used to prepare porous TiO2 films. The as-prepared TiO2 and TiO2/Ag thin films were characterized by X-ray diffractometry (XRD) and by scanning electron microscopy to reveal structural and morphological differences. In addition, the photocatalytic properties of these films were investigated by degrading methylene blue under UV irradiation. When PS spheres of different sizes were introduced after calcination, the as-prepared TiO2 films exhibited different porous structures. XRD results showed that all TiO2/Ag films exhibited a major anatase phase. The photodegradation of porous TiO2 thin films prepared with 200 nm PS spheres and doped with 1 mol% Ag exhibited the best photocatalytic efficiency where ∼ 100% methylene blue was decomposed within 8 h under UV exposure.
原文英語
頁(從 - 到)1743-1747
頁數5
期刊Thin Solid Films
516
發行號8
DOIs
出版狀態已發佈 - 2月 29 2008
對外發佈

ASJC Scopus subject areas

  • 電子、光磁材料
  • 表面和介面
  • 表面、塗料和薄膜
  • 金屬和合金
  • 材料化學

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