XPS and FTIR investigation of the surface properties of different prepared titania nano-powders
Publication: Research - peer-review › Journal article
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XPS and FTIR investigation of the surface properties of different prepared titania nano-powders. / Jensen, Henrik; Solovyev, Alexey; Lie, Zheshen; Søgaard, Erik Gydesen.
In: Applied Surface Science, Vol. 246, No. 1-3, 2005, p. 239-249.Publication: Research - peer-review › Journal article
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TY - JOUR
T1 - XPS and FTIR investigation of the surface properties of different prepared titania nano-powders
A1 - Jensen,Henrik
A1 - Solovyev,Alexey
A1 - Lie,Zheshen
A1 - Søgaard,Erik Gydesen
AU - Jensen,Henrik
AU - Solovyev,Alexey
AU - Lie,Zheshen
AU - Søgaard,Erik Gydesen
PB - Elsevier BV North-Holland
PY - 2005
Y1 - 2005
N2 - Surface studies of nano-sized TiO2 powders prepared by different methods showed that the preparation method had great impact on the surface properties. XPS measurements showed that the oxygen composition was related to the preparation method. The chloride method yielded the lowest amount of surface oxygen (29%) and sol–gel prepared powder showed the greatest amount of surface oxygen (66%) in the form of surface hydroxyl groups. The remaining oxygen was identified as lattice oxygen. The powder prepared by the sol–gel method contained carbon impurities originating from residual alkoxy groups. Supercritical sol–gel prepared powder and powder prepared by the sulphate method revealed same trends regarding oxygen composition with 44–47% being surface oxygen; neither contained carbon impurities. The results obtained from XPS were confirmed by FTIR measurements.
AB - Surface studies of nano-sized TiO2 powders prepared by different methods showed that the preparation method had great impact on the surface properties. XPS measurements showed that the oxygen composition was related to the preparation method. The chloride method yielded the lowest amount of surface oxygen (29%) and sol–gel prepared powder showed the greatest amount of surface oxygen (66%) in the form of surface hydroxyl groups. The remaining oxygen was identified as lattice oxygen. The powder prepared by the sol–gel method contained carbon impurities originating from residual alkoxy groups. Supercritical sol–gel prepared powder and powder prepared by the sulphate method revealed same trends regarding oxygen composition with 44–47% being surface oxygen; neither contained carbon impurities. The results obtained from XPS were confirmed by FTIR measurements.
KW - TiO2
KW - Surface hydroxyl groups
KW - Preparation methods
KW - XPS
KW - FTIR
JO - Applied Surface Science
JF - Applied Surface Science
SN - 0169-4332
IS - 1-3
VL - 246
SP - 239
EP - 249
ER -