Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 7, Issue 43, Pages 23920-23931Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b06194
Keywords
ethanol oxidation reaction; palladium-based catalysts; iron-palladium alloy; gamma phased iron oxide; carbon nanotubes
Funding
- Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning [2013-70]
- Shanghai Pujiang Program [13PJ1403300]
- Shanghai Municipal Education Commission [13ZZ138]
- University of Tennessee-Knoxville
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Ultrafine iron-palladium (FePd) nanoalloys deposited on gamma-Fe2O3, FePd Fe2O3, further anchored on carboxyl multiwalled carbon nanotubes (MWNTs-COOH), FePd-Fe2O3/MWNTs, were successfully synthesized by a facile one-pot solution based method as thermally decomposing palladium acetylacetonate (Pd(acac)(2)) and iron pentacarbonyl (Fe(CO)(5)) in a refluzing dimethylformamide solution in the presence of MWNTs-COOH. A 3.65 fold increase of peak current density was observed in cyclic voltammetry (CV) for ethanol oxidation reaction (EOR) compared with that of Pd/MWNTs after normalizing to Pd mass. The greatly enhanced tolerance stability toward poisoning species and largely reduced charge transfer resistance were also obtained in chronoamperometry and electrochemical impedance spectroscopy due to the downward shifted d-band center of FePd alloy, easily formed oxygen containing species on Fe2O3, and the stabilizing role of the MWNTs.
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