PtRh alloy nanoparticle electrocatalysts for oxygen reduction for use in direct methanol fuel cells

Park, Kyung-Won; Han, Dae-Seob; Sung, Yung‐Eun

doi:10.1016/j.jpowsour.2006.04.073

Cited by 69 publications

(38 citation statements)

References 18 publications

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“…This result indicates that formation of a Pt-Rh alloy occurred. Indeed, it is known that Pt and Rh atoms form alloys in a wide range of Pt/Rh compositions [11,35]. However, being the value of the lattice parameter of the carbon supported Pt-Rh alloy prepared by the FAM higher than that of bulk Pt-Rh (1:1) (a r = 0.386 nm [36]), the presence of nonalloyed Rh or its oxides is very likely.…”

Section: Resultsmentioning

confidence: 99%

Preparation, structural characterization and activity for ethanol oxidation of carbon supported ternary Pt–Sn–Rh catalysts

Colmati

Antolini

González

2008

Journal of Alloys and Compounds

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Section: Resultsmentioning

confidence: 99%

Preparation, structural characterization and activity for ethanol oxidation of carbon supported ternary Pt–Sn–Rh catalysts

Colmati

Antolini

González

2008

Journal of Alloys and Compounds

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“…Park et al [57] synthesized unsupported PtRh alloy nanoparticles in the Pt:Rh atomic ratio 3:1, 2:1 and 1:1 by the reduction of Pt and Rh precursors at room temperature with NaBH 4 , and investigated their ORR activity and methanol tolerance by LSV measurements and tests in DMFCs. By XRD measurements alloy formation between Pt and Rh was observed.…”

Section: Catalysts With Higher Mor Activity Than Pt (Reducing the Co mentioning

confidence: 99%

An overview of platinum-based catalysts as methanol-resistant oxygen reduction materials for direct methanol fuel cells

Antolini

Lopes

González

2008

Journal of Alloys and Compounds

249

151

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“…Initial efforts in synthesis of nanoparticles were aimed at control of nanoparticle size and shape [1][2][3]. Recently, efforts have turned towards synthesis of alloy nanoparticles [4][5][6]. Alloy nanoparticles can be more effective catalysts or have better magnetic properties than pure component nanoparticles [1,7,8].…”

Section: Introductionmentioning

confidence: 99%

NiFe2O4@SiO2 Nanoparticles Stabilized by Porous Silica Shells

et al. 2012

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NiFe 2 O 4 nanoparticles stabilized by porous silica shells (NiFe 2 O 4 @SiO 2 ) were prepared using a onepot synthesis and characterized for their physical and chemical stability in severe environments, representative of those encountered in industrial catalytic reactors. The SiO 2 shell is porous, allowing transport of gases to and from the metal core. The shell also stabilizes NiFe 2 O 4 at the nanoparticle surface: NiFe 2 O 4 @SiO 2 annealed at temperatures through 973 K displays evidence of surface Ni, as verified by H 2 TPD analyses. At 1,173 K, hematite forms at the surface of the metallic cores of the NiFe 2 O 4 @SiO 2 nanoparticles and surface Ni is no longer observed. Without the silica shell, however, even mild reduction (at 773 K) can draw Fe to the surface and eliminate surface Ni sites.

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PtRh alloy nanoparticle electrocatalysts for oxygen reduction for use in direct methanol fuel cells

Cited by 69 publications

References 18 publications

Preparation, structural characterization and activity for ethanol oxidation of carbon supported ternary Pt–Sn–Rh catalysts

Preparation, structural characterization and activity for ethanol oxidation of carbon supported ternary Pt–Sn–Rh catalysts

An overview of platinum-based catalysts as methanol-resistant oxygen reduction materials for direct methanol fuel cells

NiFe2O4@SiO2 Nanoparticles Stabilized by Porous Silica Shells

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