Facile synthesis and visible-light photocatalytic activity of bismuth titanate nanorods

Jungang Hou, Shuqiang Jiao, Hongmin Zhu, R. V. Kumar

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

Highly crystalline bismuth titanate (Bi12TiO20, BiT) nanorods, as visible-light photocatalysts were prepared by a template-free hydrothermal process. The as-prepared BiT nanorods fabricated in high yields by simply manipulating pH values in the absence of any capping agent, were characterized by a number of techniques, such as XRD, SEM, TEM, HRTEM, BET, and UV-Vis spectrum. In this case, hydroxide ions seem to play a pivotal role in controlling the formation of seeds and the growth of the BiT nanorods. Based on the structural analysis of nanocrystals obtained at different pH values, we proposed a plausible mechanism to account for the formation of the tunable morphologies. Most importantly, the BiT nanorods with good stability exhibited higher photocatalytic activities in the degradation of Rhodamine B under visible light irradiation (λ ≤ 420 nm) than the commercial P25 TiO 2 and bulk BiT powders, demonstrating that Bi12TiO 20 is a promising candidate as a visible-light photocatalyst.

Original languageEnglish
Pages (from-to)5557-5564
Number of pages8
JournalJournal of Nanoparticle Research
Volume13
Issue number10
DOIs
Publication statusPublished - 2011 Oct 1
Externally publishedYes

Keywords

  • BiTiO
  • Nanorods
  • Photocatalyst
  • Visible-light

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Atomic and Molecular Physics, and Optics
  • Modelling and Simulation
  • Materials Science(all)
  • Condensed Matter Physics

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