2020年3月1日
Fabrication and photocatalytic behavior of titanium oxide–gold nanoparticles composite ultrathin films prepared using surface sol–gel process
Journal of Sol-Gel Science and Technology
- 巻
- 93
- 号
- 3
- 開始ページ
- 563
- 終了ページ
- 569
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1007/s10971-019-05214-w
© 2020, Springer Science+Business Media, LLC, part of Springer Nature. Ultrathin films consisting of titanium oxide and gold nanoparticles were prepared using a combination of the surface sol–gel process and liquid/liquid interfacial precipitation. The composite films had a titanium oxide/gold nanoparticle layer/titanium oxide film structure, comprising a gold nanoparticle thin-film layer sandwiched within titanium oxide films of nanometer-order thickness. Upon heating the titanium oxide–gold nanoparticle composite films to 450 °C, they underwent a phase change from the amorphous to the anatase phase, which was confirmed via Raman scattering analysis. It was observed that, even after heating, the plasmonic absorption band due to the presence of gold nanoparticles was maintained in the composite films. The photocatalytic degradation efficiencies of methylene blue dye were evaluated in films under 520 nm light irradiation. The results suggested that the sandwich-like structure of this titanium oxide/gold nanoparticle layer/titanium oxide is promising for the visible-light-induced degradation of methylene blue dye.
- リンク情報
- ID情報
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- DOI : 10.1007/s10971-019-05214-w
- ISSN : 0928-0707
- eISSN : 1573-4846
- ORCIDのPut Code : 71916843
- SCOPUS ID : 85077717549