کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
193378 459768 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The influence of electrochemical annealing in CO saturated solution on the catalytic activity of Pt nanoparticles
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
The influence of electrochemical annealing in CO saturated solution on the catalytic activity of Pt nanoparticles
چکیده انگلیسی

Combining non-destructive, identical location—transmission electron microscopy (IL-TEM) with rotating disk electrode (RDE) measurements, the influence of different treatment procedures on the catalytic activity of carbon supported Pt nanoparticles is probed. IL-TEM shows that the treatment of the catalyst has only minor influence on its structure or the particle shape and size; in particular no treatment induced particle agglomeration is observed. At the same time, both CO stripping and CO bulk measurements are significantly influenced by the electrochemical treatment. In consistence with previous studies this can be explained by the removal of defects in the CO adlayer structure while cycling in CO saturated solution. In contrast, however, it is demonstrated that CO annealing has no impact on the oxygen reduction reaction in the mixed kinetic-diffusion control potential region.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 54, Issue 22, 1 September 2009, Pages 5018–5022
نویسندگان
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