2013
DOI: 10.1039/c3cp52601a
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Enhanced methanol oxidation and oxygen reduction reactions on palladium-decorated FeCo@Fe/C core–shell nanocatalysts in alkaline medium

Abstract: Palladium based nano-alloys are well known for their unique electrocatalytic properties. In this work, a palladium-decorated FeCo@Fe/C core-shell nanocatalyst has been prepared by a new method called microwave-induced top-down nanostructuring and decoration (MITNAD). This simple, yet efficient technique, resulted in the generation of sub-10 nm sized FeCo@Fe@Pd nanocatalysts (mainly 3-5 nm) from a micron-sized (0.21-1.5 mm) FeCo@Fe/C. The electrocatalytic activities of the core-shell nanocatalysts were explored… Show more

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Cited by 35 publications
(25 citation statements)
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“…Furthermore, it is confirmed to be a typical Pd (fcc) polycrystalline structure by selected area electron diffraction (SAED, Fig. 4a inserted) [24], which is consistent with the XRD observations. Based on 200 randomly selected nanoparticles, the size ranges from 1 to 10 nm.…”
Section: Electrocatalystsupporting
confidence: 83%
See 1 more Smart Citation
“…Furthermore, it is confirmed to be a typical Pd (fcc) polycrystalline structure by selected area electron diffraction (SAED, Fig. 4a inserted) [24], which is consistent with the XRD observations. Based on 200 randomly selected nanoparticles, the size ranges from 1 to 10 nm.…”
Section: Electrocatalystsupporting
confidence: 83%
“…For Pd/C, the anodic peak at À0.25 V is associated with the formation of Pd surface oxides, whereas the reduction of these oxides results in a well-defined cathodic peak at À0.18 V. The characteristic peaks in PdeFe 2-CoO x /C, PdeFeCoO x /C and PdeFeCo 2 O x /C catalysts show a little difference in locations and sizes compared to Pd/C, owing to the presence of metal oxides nanoparticles [23]. Electrochemical active surface area (EASA) is calculated by determining the coulombic charge for the reduction of Pd oxide as follows [24]:…”
Section: Resultsmentioning
confidence: 99%
“…[33][34][35] In the present study, MWCNT-COOH and MWCNT-SO 3 H are used as supports rather than the Vulcan XC-72. First, FeCo@Fe/MWCNT-COOH and FeCo@Fe/MWCNT-SO 3 H core-shell nanoalloys were obtained by a simple reduction method via hydrogenation.…”
Section: Preparation Of Feco@fe@pd/mwcnt Nanocatalystsmentioning
confidence: 99%
“…Recently, we introduced Pd-based ternary core-shell with a bimetallic (FeCo) core supported on commercial Vulcan carbon XC-72 (i.e., FeCo@Fe@Pd/C) via "microwave-induced top-down nanostructuring and decoration" (MITNAD) strategy. [33][34][35] The MITNAD strategy is simply the adoption of fast microwave irradiation for a one-step top-down nanosizing of large-sized soft magnetic FeCo@Fe/C core-shell material (0.21-1.5 microns) to sub-10 nm sized Pd-coated structure, FeCo@Fe@Pd/C. In the present work, we have interrogated the use of two differently chemically-functionalized multi-walled carbon nanotubes (MWCNTs) bearing mainly the -COOH or -SO 3 H surface groups (abbreviated herein as MWCNT-COOH and MWCNT-SO 3 H, respectively), as supporting platforms for the FeCo@Fe@Pd catalyst.…”
Section: Introductionmentioning
confidence: 99%
“…The MnO 2 ‐Pd/OLC and Pd/OLC catalysts were prepared using a method that has recently been reported, with little modification. Briefly, catalysts were obtained from the mixture of OLC and PdCl 2 , as well as KMnO 4 , OLC and PdCl 2 in ethylene glycol solution and subjecting the mixture to rapid microwave irradiation at 500 W, 80 bars, and ∼198 °C for 15 minutes using the Anton Parr Synthos 3000 microwave reactor.…”
Section: Methodsmentioning
confidence: 99%