Enhanced visible-light photocatalytic activity in K0.81Ti1.73Li0.27O4/TiO2-xNy sandwich-like composite

Peilin Zhang, Xiangwen Liu, Shu Yin, Tsugio Sato

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

A lepidocrocite-type tianate, K0.81Ti1.73Li0.27O4, was coupled with TiO2-xNy by a hydrothermal method in order to give the visible-light responsiveness. After treating K0.81Ti1.73Li0.27O4 in a HCl aqueous solution to peel off and/or split the titanate plates, nano-sized nitrogen doped titania particles were added to form a sandwich-like bridging structure possessing high specific surface area and porosity. The prepared K0.81Ti1.73Li0.27O4/TiO2-xNy sandwich-like composite showed excellent photocatalytic activity for the decomposition of NOx gas under both visible-light and UV light irradiation (λ > 510, 400, 290 nm), being superior to that of TiO2-xNy or commercial TiO2 (AEROXIDE® TiO2 P 25) powders.

Original languageEnglish
Pages (from-to)299-303
Number of pages5
JournalApplied Catalysis B: Environmental
Volume93
Issue number3-4
DOIs
Publication statusPublished - 2010 Jan 12

Keywords

  • Coupled catalyst
  • DeNO
  • Nitrogen doped titania
  • Photocatalyst
  • Titanate

ASJC Scopus subject areas

  • Catalysis
  • Environmental Science(all)
  • Process Chemistry and Technology

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