Synthesis of anatase Se/Te-TiO2 nanorods with dominant {100} facets: Photocatalytic and antibacterial activity induced by visible light

Zong Hong Lin, Prathik Roy, Zih Yu Shih, Chung Mao Ou, Huan Tsung Chang*

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

23 Scopus citations

Abstract

A facile method for the preparation of Te- and Se/Te-doped anatase TiO 2 nanorods (NRs) with exposed {100} facets, which provides high photocatalytic and antibacterial activity under irradiation with visible light, is developed. Sodium titanate nanotubes are formed from commercial TiO 2 nanoparticles (P25) in NaOH through a hydrothermal reaction. The as-prepared Na-titanate nanotubes are then used to form Te-TiO2 nanotubes in the presence of tellurite (TeO32-) ions and NaBH4. Upon further hydrothermal reaction, the Te-TiO2 nanotubes are transformed to form Te-TiO2 NRs that further form Sen/Te-TiO2 NRs through a reduction of selenite (SeO 32-) ions with NaBH4. The Te-TiO2 NRs and Sen/Te-TiO2 NRs have highly active {100} facets and thus provide the photocatalytic activities for the generation of ×OH at 2.5 and 4.5 times higher than that of commercial P25, respectively. The Te-TiO2 and Sen/Te-TiO2 NRs exhibit higher antibacterial activities against E. coli and S. aureus than P25 when activated by visible light. These stable and biocompatible Te-TiO2 and Se n/Te-TiO2 NRs hold great potential as potent antibacterial agents.

Original languageEnglish
Pages (from-to)302-309
Number of pages8
JournalChemPlusChem
Volume78
Issue number4
DOIs
StatePublished - 04 2013
Externally publishedYes

Keywords

  • antibacterial agents
  • nanostructures
  • photocatalysis
  • selenium
  • tellurium
  • titanium dioxide

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