کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7724453 | 1497590 | 2011 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Wormholelike mesoporous carbons as the support for Pt2Sn1 towards ethanol electrooxidation: Effect of pore diameter
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Wormholelike mesoporous carbons as the support for Pt2Sn1 towards ethanol electrooxidation: Effect of pore diameter Wormholelike mesoporous carbons as the support for Pt2Sn1 towards ethanol electrooxidation: Effect of pore diameter](/preview/png/7724453.png)
چکیده انگلیسی
Pt2Sn1 nanoparticles supported on wormholelike mesoporous carbons (WMCs) with three different pore diameters, namely WMC-F7, WMC-F30, and WMC-F0 have been synthesized by adopting a modified pulse microwave-assisted polyol method. The pore diameters (Dp) of WMC-F7, WMC-F30, and WMC-F0 are 8.5 nm, 4.4 nm, and 3.1 nm respectively, while the particle size of Pt2Sn1 (DPt) on each support is identical (â¼3 nm). Based on the experimental results, it has been found that the pore diameter plays an important role in the electrochemical activity of Pt2Sn1 catalysts towards ethanol electrooxidation reaction (EOR). Pt2Sn1/WMC-F7 catalyst exhibits the highest electrochemical surface area (ESA) and activity towards EOR. Moreover, Pt2Sn1/WMC-F7 gives the comparable activity to the Pt2Sn1 supported on the commercial XC-72 carbon. However, in the cases of WMC-F30 (DPt < Dp < 2 DPt) and WMC-F0 (Dp = DPt) as the supports, the corresponding catalysts obtain much lower ESA and EOR activity with respect to WMC-F7 (Dp > 2 DPt). This could be attributed to the easy accessibility of Pt2Sn1 nanoparticles in the case of WMC-F7 with Dp > 2 DPt for the easy fuel transportation, and consequently the EOR activity has been greatly improved.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 36, Issue 3, February 2011, Pages 2250-2257
Journal: International Journal of Hydrogen Energy - Volume 36, Issue 3, February 2011, Pages 2250-2257
نویسندگان
Jinchao Liu, Zhenghui Li, Chaoxiong He, Ruowen Fu, Dingcai Wu, Shuqin Song,