Ultrafine FePd Nanoalloys Decorated Multiwalled Cabon Nanotubes toward Enhanced Ethanol Oxidation Reaction

Yiran Wang; Qingliang He; Jiang Guo; Jinmin Wang; Zhiping Luo; Tong D Shen; Keqiang Ding; Airat Khasanov; Suying Wei; Zhanhu Guo

doi:10.1021/acsami.5b06194

Ultrafine FePd Nanoalloys Decorated Multiwalled Cabon Nanotubes toward Enhanced Ethanol Oxidation Reaction

ACS Appl Mater Interfaces. 2015 Nov 4;7(43):23920-31. doi: 10.1021/acsami.5b06194. Epub 2015 Oct 26.

Authors

Yiran Wang¹, Qingliang He¹, Jiang Guo¹, Jinmin Wang², Zhiping Luo³, Tong D Shen⁴, Keqiang Ding⁵, Airat Khasanov⁶, Suying Wei⁷, Zhanhu Guo¹

Affiliations

¹ Integrated Composites Laboratory (ICL), Chemical & Biomolecular Engineering, College of Engineering, The University of Tennessee , Knoxville, Tennessee 37996, United States.
² School of Environmental and Materials Engineering, College of Engineering, Shanghai Second Polytechnic University , Shanghai 201209, People's Republic of China.
³ Department of Chemistry and Physics, Fayetteville State University , Fayetteville, North Carolina 28301, United States.
⁴ State Key Laboratory of Metastable Materials Science and Technology, Yanshan University , Hebei 066004, China.
⁵ College of Chemistry and Materials Science, Hebei Normal University , Shijiazhuang 050024, China.
⁶ Department of Chemistry University of North Carolina at Asheville , Asheville, North Carolina 28804, United States.
⁷ Department of Chemistry and Biochemistry Lamar University , Beaumont, Texas 77710, United States.

PMID: 26435327
DOI: 10.1021/acsami.5b06194

Abstract

Ultrafine iron-palladium (FePd) nanoalloys deposited on γ-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 refluxing 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.

Keywords: carbon nanotubes; ethanol oxidation reaction; gamma phased iron oxide; iron−palladium alloy; palladium-based catalysts.

Publication types

Research Support, Non-U.S. Gov't