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A Promising Approach to the Synthesis of 3D Nanoporous Graphitic Carbon as a Unique Electrocatalyst Support for Methanol Oxidation
Author(s) -
Tiwari Jitendra N.,
Tiwari Rajanish N.,
Chang YunMin,
Lin KunLin
Publication year - 2010
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.200900223
Subject(s) - electrocatalyst , nanoporous , methanol , chemistry , carbon fibers , materials science , nanotechnology , chemical engineering , organic chemistry , electrochemistry , electrode , composite number , composite material , engineering
A 3D nanoporous graphitic carbon (g‐C) material is synthesized by using an adamantane (C 10 H 16 ) flame, and utilized to support a Pt 50 –Ru 50 alloy catalyst. The physico‐chemical properties of the Pt 50 –Ru 50 /3D nanoporous g‐C electrode are examined by a range of spectroscopy techniques as well as Brunauer–Emmett–Teller surface area analysis. Cyclic voltammetry measurements are used for electrochemical characterization of the Pt 50 –Ru 50 /3D nanoporous g‐C electrode. The electrochemical investigations show that the supported Pt 50 –Ru 50 has excellent activity and stability towards methanol electro‐oxidation. Good CO tolerance is also shown, and considered to be due to the presence of Ru nanoparticles. It is proposed that Ru is able to promote the oxidation of strongly adsorbed CO on Pt by supplying an oxygen source: Ru(OH) ad . Moreover, the presence of 3D nanopores in the g‐C support may also contribute to the observed higher current density by virtue of the easy transport of methanol and the oxidation products through these nanopores.