Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10669617 | Thin Solid Films | 2015 | 33 Pages |
Abstract
Nanostructured Pt-TiO2 composite thin films were synthesized by direct liquid injection metal organic chemical vapor deposition process, using trimethyl(methylcyclopentadienyl)platinum and titanium isopropoxide as precursors. Surface and cross-sectional morphologies obtained by scanning electron microscopy and transmission electron microscopy evidenced the uniform distribution of platinum nanoparticles in the TiO2 matrix. At higher Pt content, the X-ray diffraction analysis showed that the face-centered cubic phase of platinum appeared together with an anatase TiO2 structure. In addition, as far as the platinum chemical state is concerned, the co-deposition of TiO2 and Pt allowed obtaining Pt2 + or Pt°, in a ratio strongly dependent on the Pt content. Indeed, X-ray photoelectron spectroscopy characterization evidenced the presence of only Pt2 + for lower Pt content and only Pt° for higher one. The variation of platinum content in the TiO2 films resulted in a change of the chemical state of platinum.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
L. Avril, S. Bourgeois, P. Simon, B. Domenichini, N. Zanfoni, F. Herbst, L. Imhoff,