Room-Temperature Rutile TiO2 Nanoparticle Formation on Protonated Layered Titanate for High-Performance Heterojunction Creation

Kanji Saito, Satoshi Tominaka, Shun Yoshihara, Koji Ohara, Yoshiyuki Sugahara*, Yusuke Ide

*この研究の対応する著者

研究成果: Article査読

17 被引用数 (Scopus)

抄録

We report a methodology for creating protonated layered titanate-rutile heterojunctions on the outer particle surface of protonated layered titanate by treating layered potassium titanate (K0.8Ti1.73Li0.27O4) with dilute HCl and then drying it at room temperature under reduced pressure. After Pt co-catalyst loading, this protonated layered titanate/rutile composite with heterojunctions showed higher photocatalytic H2 evolution activity from water under simulated solar light compared to that of Pt-loaded P25, the standard photocatalyst for this reaction. The high photocatalytic activity was ascribable to enhanced photocatalytic activity of the protonated layered titanate based on an efficient charge separation at the protonated layered titanate-rutile heterojunction in addition to the sensitization effects of rutile, which absorbs light with longer wavelengths compared to those of protonated layered titanate.

本文言語English
ページ(範囲)24538-24544
ページ数7
ジャーナルACS Applied Materials and Interfaces
9
29
DOI
出版ステータスPublished - 2017 7月 26

ASJC Scopus subject areas

  • 材料科学(全般)

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