Enhancement of tributyltin degradation under natural light by N-doped TiO2 photocatalyst

Sornnarin Bangkedphol, Helen Keenan, Christine Davidson, Arthit Sakultantimetha, W Sirisaksoontorn, A. Songsasen

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

Photo-degradation of tributyltin (TBT) has been enhanced by TiO(2) nanoparticles doped with nitrogen (N-doped TiO(2)). The N-doped catalyst was prepared by a sol-gel reaction of titanium (IV) tetraisopropoxide with 25% ammonia solution and calcined at various temperatures from 300 to 600°C. X-ray diffraction results showed that N-doped TiO(2) remained amorphous at 300°C. At 400°C the anatase phase occurred then transformed to the rutile phase at 600°C. The crystallite size calculated from Scherrer's equation was in the range of 16-51 nm which depended on the calcination temperature. N-doped TiO(2) calcined at 400°C which contained 0.054% nitrogen, demonstrated the highest photocatalytic degradation of TBT at 28% in 3h under natural light when compared with undoped TiO(2) and commercial photocatalyst, P25-TiO(2) which gave 14.8 and 18% conversion, respectively.
Original languageEnglish
Pages (from-to)533-537
Number of pages5
JournalJournal of Hazardous Materials
Volume184
Issue number1-3
DOIs
Publication statusPublished - 15 Dec 2010

Keywords

  • sol–gel
  • tributyltin
  • n-doped TiO2
  • photocatalytic degradation

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