کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7710432 | 1497403 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Size-controllable synthesis of ultrafine PtNi nanoparticles uniformly deposited on reduced graphene oxide as advanced anode catalysts for methanol oxidation
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A one-pot thermos-reduction strategy is developed to prepare ultrafine PtNi alloy nanoparticles (NPs), which are uniformly deposited onto reduced graphene oxides (RGOs) in the presence of polyvinylpyrrolidone (PVP). The size of PtNi NPs on RGOs can be tuned from 2.5 to 5.4Â nm, after Ni was alloyed with Pt by Pt/Ni atomic ratio increased from 2:1 to 5:1. The electrochemical investigation demonstrates that Ni modification can promote the electrocatalytic activity of Pt catalysts on oxidation of methanol with a mass current density up to 1065Â mAÂ mgâ1, which is 2.65 times that of Pt catalysts without Ni modification, and comparable to and even better than those of the Pt-based catalysts reported recently.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 22, 15 June 2016, Pages 9303-9311
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 22, 15 June 2016, Pages 9303-9311
نویسندگان
Yanfei Hao, Xudan Wang, Yuanyuan Zheng, Jianfeng Shen, Junhua Yuan, Ai-jun Wang, Li Niu, Shengtang Huang,