Journal of the Ceramic Society of Japan
Online ISSN : 1348-6535
Print ISSN : 1882-0743
ISSN-L : 1348-6535
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Novel design of facet-engineered TiO2 nanocomposite with non-noble metal for enhancing photocatalytic activity
Kunihiko KATOTakafumi SUDOYunzi XINTakashi SHIRAI
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JOURNAL OPEN ACCESS

2021 Volume 129 Issue 11 Pages 691-695

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Abstract

To create a highly photocatalytic performance in addressing the global environmental issues, we develop a highly efficient photocatalyst engineered by a combination of control of exposed facet in TiO2 and composite with the non-noble metal nanoparticle. The formation of a fluorinated surface during crystal growth assists the morphology control of TiO2 with coexposed {001}/{101} facets. In addition, the deposition of nano-sized Sn particles (>10 nm) is achieved via photochemical reduction on the faceted TiO2 from anhydrous chelated tin(II) complexes by amino acid. Here, the bidentate ligands (i.e., carboxyl and amino group) in proline molecular play a vital role in associating the strong interaction between TiO2 surface and chelated Sn complexes. The optimal balance in the ratio of exposed {001}/{101} facets and loading amount of Sn nanoparticles are essential factors for an enhancement of photocatalytic activity for efficiently consume photo-exited electrons in the degradation of azo-dye water pollutants.

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© 2021 The Ceramic Society of Japan

この記事はクリエイティブ・コモンズ [表示 4.0 国際]ライセンスの下に提供されています。
https://creativecommons.org/licenses/by/4.0/deed.ja
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