کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7739313 | 1497990 | 2013 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Single-walled carbon nanotube buckypapers as electrocatalyst supports for methanol oxidation
ترجمه فارسی عنوان
نانولوله کربن تک کشی به عنوان الکتریکی کاتالیست برای اکسیداسیون متانول پشتیبانی می کند
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
This work studies the use of various single-walled carbon nanotube (SWCNT) buckypapers as catalyst supports for methanol electro-oxidation in acid media. Buckypapers were obtained by vacuum filtration from pristine and oxidized SWCNT suspensions in different liquid media. Pt-Ru catalysts supported on the buckypapers were prepared by multiple potentiostatic pulses using a diluted solution of Pt and Ru salts (2Â mM H2PtCl6Â +Â 2Â mM RuCl3) in acid media. The resulting materials were characterized via SEM, TEM, EDX and ICP-OES analysis. Well dispersed rounded nanoparticles between 2 and 15Â nm were successfully electrodeposited on the SWCNT buckypapers. The ruthenium content in the bimetallic deposits was between 32 and 48Â at. %, while the specific surface areas of the catalysts were in the range of 72-113Â m2Â gâ1. It was found that the solvent used to prepare the SWCNT buckypaper films has a strong influence on the catalyst dispersion, particle size and metal loading. Cyclic voltammetry and chronoamperometry experiments point out that the most active electrodes for methanol electro-oxidation were prepared with the buckypaper supports that were obtained from SWCNT dispersions in N-methyl-pyrrolidone.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 242, 15 November 2013, Pages 7-14
Journal: Journal of Power Sources - Volume 242, 15 November 2013, Pages 7-14
نویسندگان
J.M. Sieben, A. Ansón-Casaos, M.T. MartÃnez, E. Morallón,