Facile synthesis of potassium-doped titanium oxide nanostructure (Ktioxs)/alo(oh) composites for enhanced photocatalytic performance

So Yoon Lee, Tatsuya Matsubara, Daiki Numata, Ai Serizawa

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Generally, nanoparticles (NPs) are used as photocatalysts, which sometimes results in difficulties in the separation and recycling of photocatalysts from suspensions after their application in water and wastewater treatment, which hinders industrial applications of NPs that are too fine to be removed by gravitational settling. This can be solved by using support NPs to overcome these problems.-OH enrich AlO(OH), which is produced by a steam coating process, has been could be used as a possible support, because the-OH groups on the surface can interact with foreign molecules; thus, various composite functional materials can be prepared. Potassium doped titanium oxide NPs, which are produced by a wet corrosion process, namely KTiOxs, have been selected as photocatalysts, because KTiOxs have sufficient K+ ions, thereby expecting the chemical bonding with-OH group from AlO(OH). This study fabricated a novel photocataysis system made by combining KTiOxs as catalysts and AlO(OH) as the catalysts’ support, namely KTiOxs/AlO(OH) composites. The KTiOxs nanowires, obtained from 10 mol/L of a KOH solution treated with Ti and AlO(OH) at 280C for 24 h through a steam coating process, yielded the highest surface area and the highest photocatalytic performance.

Original languageEnglish
Article number548
JournalCatalysts
Volume11
Issue number5
DOIs
Publication statusPublished - 2021 May

Keywords

  • AlOOH
  • Coating
  • KTiOs
  • Photocatalysis
  • WCP

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

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