Enhancement of tributyltin degradation under natural light by N-doped TiO2 photocatalyst.
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.
Bangkedphol
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S
David Livingstone Centre for Sustainability, Department of Civil Engineering, University of Strathclyde, Glasgow, Scotland G1 1XN, United Kingdom. Electronic address: sornnarin.bangkedphol@strath.ac.uk.
Keenan
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HE
David Livingstone Centre for Sustainability, Department of Civil Engineering, University of Strathclyde, Glasgow, Scotland G1 1XN, United Kingdom.
Davidson
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CM
WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, Scotland G1 1XL, United Kingdom.
Sakultantimetha
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A
David Livingstone Centre for Sustainability, Department of Civil Engineering, University of Strathclyde, Glasgow, Scotland G1 1XN, United Kingdom.
Sirisaksoontorn
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W
Department of Chemistry and Centre for Innovation in chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand.
Songsasen
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A
Department of Chemistry and Centre for Innovation in chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand.
D002384:Catalysis; D006358:Hot Temperature; D008027:Light; D046529:Microscopy, Electron, Transmission; D010777:Photochemistry; D014025:Titanium / Q000737:chemistry*; D014220:Trialkyltin Compounds / Q000737:chemistry*; D014961:X-Ray Diffraction
D014220:Trialkyltin Compounds; C009495:titanium dioxide; C011559:tributyltin; D014025:Titanium