کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5367006 1388359 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
TiO2/polyaniline nanocomposite films prepared by magnetron sputtering combined with plasma polymerization process
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
TiO2/polyaniline nanocomposite films prepared by magnetron sputtering combined with plasma polymerization process
چکیده انگلیسی

Radiofrequency plasma polymerization in combination with direct current reactive magnetron sputtering is utilized for the synthesis of TiO2/plasma polymerized aniline nanocomposite thin films. In the composite film, X-ray diffraction measurements reveal formation of nanocrystalline rutile TiO2 of crystallite size 3.6 nm. Due to continuous bombardment of plasma species during simultaneous magnetron sputtering and plasma polymerization, the precursors of polymerization are broken and few functional groups are retained in the composite film. The plasma polymerized aniline has the direct optical band gap of 3.55 eV and the nanocrystalline rutile TiO2 is wide gap semiconductor with indirect gap of 3.20 eV which suggests the existence of an energy barrier at the interface in the composite form. The ac conductivity of composite film shows significant improvement as compared to plasma polymerized aniline film and sputtered rutile TiO2 film. The composite film may find potential application as antistatic coatings.

► We prepare TiO2/polyaniline films by sputtering combined with plasma polymerization. ► Rutile-TiO2/polyaniline composite film of crystallite size 3.6 nm is reported. ► Colorless composite having small crystallite size is useful as antistatic coating. ► Nanocomposite shows improvement of conductivity compared to polyaniline and TiO2.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 258, Issue 3, 15 November 2011, Pages 1199-1205
نویسندگان
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