کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1277915 1497419 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fabrication of Pt–CeO2 nanoparticles supported sulfonated reduced graphene oxide as an efficient electrocatalyst for ethanol oxidation
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Fabrication of Pt–CeO2 nanoparticles supported sulfonated reduced graphene oxide as an efficient electrocatalyst for ethanol oxidation
چکیده انگلیسی


• GO is electrosynthesised.
• Sulfonated reduced graphene oxide is prepared.
• PtCeO2/SRGO is fabricated.
• Ethanol oxidation is performed.
• Nafion solution in catalyst layer is decreased.

We synthesized graphene oxide (GO) using the electrochemical exfoliation of graphite rod and then fabricated sulfonated reduced graphene oxide (SRGO) using lyophilization-assisted technique from a liquid mixture of GO and (NH4)2SO4 with a subsequent thermal treatment in N2 saturated. Pt and CeO2 nanoparticles can be anchored on the oxygenated functional groups of SRGO sheets. The as-prepared SRGO, CeO2/SRGO, Pt/SRGO, and PtCeO2/SRGO nanocomposites have been carefully characterized by spectroscopic and electrochemical techniques. FTIR spectrum confirms the presence of a sulfonic acid group. X-ray diffractometer and tunneling electron microscopy techniques are employed to study the crystallite size. The ionic resistance of Pt/SRGO without Nafion solution in catalyst layer was equal to the Pt/RGO and Nafion solution but the catalytic activities of the PtCeO2/SRGO are higher than Pt/RGO with Nafion and Pt/SRGO electrodes for ethanol oxidation. Furthermore, the activation energy of the Pt–CeO2/SRGO anode was much lower than that of the Pt/RGO with Nafion and Pt/SRGO, which can reveal the particular properties of the exfoliated SRGO supports and PtCeO2.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 6, 19 February 2016, Pages 3861–3869
نویسندگان
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