کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5188789 | 1381169 | 2006 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hybrid composites of conductive polyaniline and nanocrystalline titanium oxide prepared via self-assembling and graft polymerization
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
After TiO2 nanoparticles were surface modified, conductive polyaniline (PANI) layer was chemically grafted on the surface of the self-assembled monolayer (SAM) coated TiO2 nanoparticles, resulting in PANI/SAM-TiO2 composites. In the preparation process of the hybrid composites, γ-aminopropyltriethoxysilane was used as a coupling agent to form a dense aminopropylsilane monolayer with active sites for the graft polymerization of aniline. The resulted composite nanoparticles were characterized by using TEM, FTIR, TGA, and UV-vis-diffuse reflectance spectroscopy. The thermogravimetric analysis confirmed that the inserted SAM layer improved the thermal stability of the PANI-TiO2 nanocomposites. Compared with neat-TiO2 nanoparticles without any surface modification, moreover, the PANI/SAM-TiO2 nanocomposites showed better photocatalytic activity in photodegradation of methyl orange under sunlight, which was partly attributed to the sensitizing effect of PANI.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 47, Issue 21, 4 October 2006, Pages 7361-7367
Journal: Polymer - Volume 47, Issue 21, 4 October 2006, Pages 7361-7367
نویسندگان
Jing Li, Lihua Zhu, Yinghui Wu, Yutaka Harima, Aiqing Zhang, Heqing Tang,