کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1596265 | 1515706 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Photoresponsive polypyrrole- TiO2 nanoparticles film fabricated by a novel surface initiated polymerization
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
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چکیده انگلیسی
A Photosensitized electrode was fabricated through a novel polymerization of pyrrole initiated by TiO2 nanoparticles under UV irradiation. Conjugated polypyrrole (PPy) continuously grows on the surface of the TiO2 film, resulting in fully covered film with the stably-bound PPy layer. The film structures were analysed using Raman and X-ray photoelectron spectroscopy (XPS). It was found that the film electrode exhibits improved photoresponse including the flat band potential, photocurrent and separation of charges. The lowest unoccupied molecular orbital (LUMO) level of the PPy is higher in energy than the LUMO of PPy in electrodeposited electrodes, providing a stronger driving force for the electron injection into the TiO2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Communications - Volume 146, Issues 5–6, May 2008, Pages 239–244
Journal: Solid State Communications - Volume 146, Issues 5–6, May 2008, Pages 239–244
نویسندگان
Jiao Wang, Xiuyuan Ni,