Fe-modified TiO2 nanocatalyst under blue-light irradiation

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

研究成果: Article同行評審

11 引文 斯高帕斯(Scopus)

摘要

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.

原文English
頁(從 - 到)1385-1387
頁數3
期刊Journal of Vacuum Science and Technology B:Nanotechnology and Microelectronics
27
發行號3
DOIs
出版狀態Published - 2009

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 儀器
  • 製程化學與技術
  • 表面、塗料和薄膜
  • 電氣與電子工程
  • 材料化學

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