کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7721397 | 1497510 | 2013 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electro-oxidation of formate-based solutions on Au/Pd core-shell nanoparticles - Experiment and simulation
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Au/Pd core-shell nanoparticles (NPs) were employed to study electro-oxidation mechanism of formate-based solutions. A series of combined studies including Raman spectroscopy, electrochemical stripping analysis, and computational simulations were conducted to understand electro-oxidation of formate-based solutions on the Au/Pd NPs. Compared to the commercial Pd black, the Au/Pd NPs showed superior catalytic activities, especially when using concentrated formate solutions. CO stripping test in conjunction with in situ Raman studies showed a lower oxidation potential (0.6Â V vs. Ag/AgCl) of CO on the Au/Pd NPs than the Pd black (>0.6Â V). This indicated a strong electronic coupling between Au and Pd in the core-shell NPs which could enhance the oxidation of formate species. In addition, theoretical studies suggested lower formate and hydroxyl coverages at the same applied potential for the Au/Pd NPs than the Pd black in the formate-based solutions, shedding lights on their superior formate-oxidizing ability.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 38, Issue 35, 22 November 2013, Pages 15532-15541
Journal: International Journal of Hydrogen Energy - Volume 38, Issue 35, 22 November 2013, Pages 15532-15541
نویسندگان
Chiajen Hsu, Chienwen Huang, Yaowu Hao, Fuqiang Liu,