Effect of hydrothermal reaction time on morphology and photocatalytic activity of H 2 Ti 3 O 7 nanotubes obtained via a rapid synthesis route

Pengyu Dong, Yuhua Wang, Bin Liu, Linna Guo, Yongji Huang, Shu Yin

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The traditional hydrothermal method for synthesis of H 2 Ti 3 O 7 nanotubes was modified, and the total hydrothermal reaction time of forming a matured network of H 2 Ti 3 O 7 nanotubes was successfully decreased by 50%. The effect of hydrothermal reaction time on morphology and photocatalytic activity of H 2 Ti 3 O 7 nanotubes was investigated and discussed. Various morphologies can be observed in the as-prepared samples with different hydrothermal reaction times. The photocatalytic activity of the as-prepared samples was evaluated for degradation of methyl orange (MO) under simulated solar irradiation. It was found that the sample treated in the hydrothermal condition for 36 h with a matured network of H 2 Ti 3 O 7 nanotubes showed excellent photocatalytic activity. The photocatalytic activity results were discussed in detail. The stronger absorption in the ultraviolet (UV) range, the increasing crystallization of H 2 Ti 3 O 7 phase, and larger surface area and pore volume contributed to the enhancement of photocatalytic activity of the as-prepared samples.

Original languageEnglish
Pages (from-to)7052-7058
Number of pages7
JournalApplied Surface Science
Volume258
Issue number18
DOIs
Publication statusPublished - 2012 Jul 1

Keywords

  • Dispersant
  • Hydrothermal process
  • Nanostructures
  • Photocatalytic degradation

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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