Fe-modified TiO2 nanocatalyst under blue-light irradiation

Y. L. Wei, K. W. Chen, H. P. Wang

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Ultraviolet (UV) and visible light active photocatalysts, 13-20 nm in size, were prepared by doping iron into anatase TiO2 (Fe/Ti at. ratio: 0.11% and 0.49%). Greater Fe dosage led to stronger light absorbance in both UV and visible regions, and also to generally better photocatalytic activity. Fe2+ and Fe3+ coexisted in 0.11% Fe- TiO2, while only Fe3+ existed in 0.49% Fe-TiO2. A dramatic change in the molecular environment of Fe was observed after the doping process; from cubic (Fe3 O4) and trigonal (Fe2 O 3) structures into tetragonal TiO2. Different Fe speciation in catalysts led to different kinetics for methylene blue photocatalytic degradation.

Original languageEnglish
Pages (from-to)1385-1387
Number of pages3
JournalJournal of Vacuum Science and Technology B:Nanotechnology and Microelectronics
Volume27
Issue number3
DOIs
Publication statusPublished - 2009

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Electrical and Electronic Engineering
  • Materials Chemistry

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