Premium
Composition‐Tunable Pt–Co Alloy Nanoparticle Networks: Facile Room‐Temperature Synthesis and Supportless Electrocatalytic Applications
Author(s) -
Xu You,
Yuan Yongqiang,
Ma Aijing,
Wu Xuan,
Liu Yang,
Zhang Bin
Publication year - 2012
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201100989
Subject(s) - nanoparticle , alloy , materials science , chemical engineering , electrocatalyst , nanotechnology , catalysis , electrochemistry , chemistry , electrode , metallurgy , organic chemistry , engineering
Pt–Co alloy nanoparticle networks (NNs) with adjustable composition are synthesized by co‐reduction of H 2 PtCl 6 and CoCl 2 with NaBH 4 in an ethylene glycol assisted cetyltrimethylammonium bromide/water/chloroform system at room temperature. Electrochemical measurements indicate that the as‐prepared spongelike Pt–Co NNs exhibit composition‐dependent electrocatalytic activities and CO tolerance with better durability toward methanol and formic acid oxidation than commercially available Pt/C catalyst. In particular, Pt 3 Co NNs show the highest specific activity, while Pt 2 Co NNs exhibit optimal mass activity among Pt–Co alloy NNs with different composition. These Pt–Co alloy NNs may be promising supportless anode catalysts for the direct methanol and direct formic acid fuel cells.