کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7714497 1497439 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electronic effect in intermetallic electrocatalysts with low susceptibility to CO poisoning during hydrogen oxidation
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Electronic effect in intermetallic electrocatalysts with low susceptibility to CO poisoning during hydrogen oxidation
چکیده انگلیسی
This paper reports the results of Hydrogen Oxidation Reaction (HOR) experiments over ordered intermetallic (PtSn and PdSn) nanoparticles under CO-free and CO-covered surface conditions. The activity of PtSn toward the HOR was comparable to the activity of commercially available Pt/C. In addition, PtSn/C presented low susceptibility to CO poisoning. In the case of CO-covered surfaces, it was found that the CO was weakly adsorbed at the surface of the PtSn nanoparticles and it did not inhibit the HOR; in fact, this catalyst performed better than Pt/C under the same experimental conditions. X-Ray Absorption assays conducted in the present work proved that the ability of Sn to donate electrons to the Pt adsorption sites was crucial for the resulting intermetallic catalyst to display high activity in the HOR and low susceptibility to CO poisoning.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 40, Issue 34, 14 September 2015, Pages 10816-10824
نویسندگان
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