کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10669617 1008762 2015 33 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nanostructured Pt-TiO2 composite thin films obtained by direct liquid injection metal organic chemical vapor deposition: Control of chemical state by X-ray photoelectron spectroscopy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Nanostructured Pt-TiO2 composite thin films obtained by direct liquid injection metal organic chemical vapor deposition: Control of chemical state by X-ray photoelectron spectroscopy
چکیده انگلیسی
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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 591, Part B, 30 September 2015, Pages 237-244
نویسندگان
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