Water-plasma-assisted synthesis of black titania spheres with efficient visible-light photocatalytic activity

Gasidit Panomsuwan, Anyarat Watthanaphanit, Takahiro Ishizaki, Nagahiro Saito

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39 Citations (Scopus)

Abstract

Black titania spheres (H-TiO<inf>2-x</inf>) were synthesized via a simple green method assisted by water plasma at a low temperature and atmospheric pressure. The in situ production of highly energetic hydroxyl and hydrogen species from water plasma are the prominent factors in the oxidation and hydrogenation reactions during the formation of H-TiO<inf>2-x</inf>, respectively. The visible-light photocatalytic activity toward the dye degradation of H-TiO<inf>2-x</inf> can be attributed to the synergistic effect of large-surface area, visible-light absorption and the existence of oxygen vacancies and Ti<sup>3+</sup> sites.

Original languageEnglish
Pages (from-to)13794-13799
Number of pages6
JournalPhysical Chemistry Chemical Physics
Volume17
Issue number21
DOIs
Publication statusPublished - 2015 Jun 7

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ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Physics and Astronomy(all)

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