The synthesis of nitrogen/sulfur co-doped TiO2 nanocrystals with a high specific surface area and a high percentage of {001} facets and their enhanced visible-light photocatalytic performance

Wenjing Shi, Weiyi Yang, Qi Li, Shian Gao, Panju Shang, Jian Ku Shang

Research output: Contribution to journalArticle

Abstract

Nitrogen/sulfur co-doped anatase TiO2 nanocrystals with a high specific surface area and a high percentage of {001} facets were synthesized by a solvent-thermal process followed by the calcination with thiourea at an optimum heat treatment temperature. Under current experimental conditions, the optimum heat treatment temperature was found at 300°C, which successfully introduced nitrogen and sulfur dopants into the anatase lattice to replace a small portion of oxygen atoms while preserving the geometry of these anatase TiO2 nanocrystals to maintain a high percentage of {001} facets. These nitrogen/sulfur co-doped anatase TiO2 nanocrystals demonstrated a largely enhanced light absorption in the whole visible-light range and exhibited much higher photocatalytic performance than both P25 TiO2 nanoparticles and anatase TiO2 nanocrystals with a high percentage of {001} facets under visible-light illumination.

Original languageEnglish (US)
Article number590
Pages (from-to)1-9
Number of pages9
JournalNanoscale Research Letters
Volume7
DOIs
StatePublished - Jan 1 2012

Keywords

  • Highly active {001} facets
  • Nitrogen/sulfur co-doped
  • Visible-light photocatalytic performance

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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