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http://hdl.handle.net/123456789/15977
Title: | Synthesis and characterization of iron- and nitrogen-functionalized graphene catalysts for oxygen reduction reaction |
Authors: | Rapidah Othman, Md. Sohrab Hossain Noor H. Jabarullah |
Keywords: | graphene;non-precious metal catalyst fuel cell oxygen reduction reaction rotating disc electrode |
Issue Date: | 19-Apr-2017 |
Abstract: | Iron- and nitrogen-functionalized graphene (Fe-N-G), as well as iron- and nitrogen-functionalized oxidized graphene (Fe-N-Gox) catalysts were synthesized as non-noble metal electrocatalysts for oxygen reduction reaction (ORR). The physical properties of the resultant catalysts were characterized using nitrogen adsorption measurements, X-ray diffraction, Raman and X-ray photoelectron spectroscopies and transmission electron microscopy. Subsequently, ORR activities of the catalysts were determined electrochemically using a conventional three-electrode cell via cyclic voltammetry with a rotating disc electrode, the results of which indicated that the synthesized catalysts had a marked electrocatalytic activity towards ORR in acid media. Among the synthesized catalysts, that functionalized using 2,4,6-tris(2-pyridyl)-1,3,5-triazine as nitrogen source had the highest electrocatalytic activity with the highest onset potential (0.98 V/SHE) and limiting current density (5.12 mA cm−2). The findings are particularly important to determine a non-precious metal catalyst for ORR activity in fuel cells. |
URI: | http://ir.unikl.edu.my/jspui/handle/123456789/15977 |
ISSN: | 1099-0739 |
Appears in Collections: | Journal Articles |
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File | Description | Size | Format | |
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Synthesis and characterization of iron- and nitrogen-functionalized graphene catalysts for oxygen reduction reaction.pdf | 13.1 kB | Adobe PDF | View/Open |
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