Carbon nanotubes supported PtPd hollow nanospheres for formic acid electrooxidation

Liu, B.; Li, H.Y.; Die, L.; Zhang, X.H.; Fan, Zhen; Chen, J.H.

doi:10.1016/j.jpowsour.2008.09.076

Cited by 114 publications

(50 citation statements)

References 34 publications

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“…Interestingly, similar effect was also observed for carbon supported Au-Pt and Pt catalysts [16]. This can be explained by shift of oxide formation/reduction for Pd-Au alloys with Au content towards higher potentials, as shown in [46]. Taking into account that the current was normalised to total metal content and that gold is inactive, the specific activity of palladium (calculated per mass unit of Pd) in the novel Au-Pd/MWCNTs catalyst (after H 2 -Ar annealing of the precursor), for the potentials between 0.0 and 0.35 V, is more than two times higher than that in the Pd/MWCNTs catalyst (after H 2 -Ar annealing of the precursor) in this potential range.…”

Section: Resultssupporting

confidence: 73%

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Palladium and Palladium Gold Catalysts Supported on MWCNTs for Electrooxidation of Formic Acid

Chen

Liou

et al. 2010

Fuel Cells

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Novel multi‐wall carbon nanotubes (MWCNTs) supported Pd–Au catalyst for electrooxidation of formic acid was prepared and compared with a similarly prepared Pd/MWCNTs and with a commercial Pt–Ru/Vulcan catalyst. The catalysts were prepared by a two‐stage polyol method, followed by H2–Ar annealing and were characterised by using X‐ray diffraction, FE‐TEM and EDX. Cyclic voltammetry (CV) was used to test their catalytic activity towards formic acid electrooxidation and accessible metal surface in the catalyst layer. In the case of the precursor of Pd–Au/MWCNTs catalyst (before H2–Ar annealing), subsequent deposition of Pd and Au led to a material of the core‐shell structure, catalytically inactive. Annealing of the core shell Pd–Au/MWCNTs precursor in H2–Ar resulted in the formation of the novel Pd–Au/MWCNTs catalyst. A highly dispersed Pd–Au solid solution (average XRD particle size 4.8 nm) is formed, and the novel catalyst is more active than the Pd/MWCNTs one. Both the Pd–Au/MWCNTs and the Pd/MWCNTs catalysts turned out to be more active than a commercial, highly dispersed Pt–Ru/Vulcan catalyst.

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Section: Resultssupporting

confidence: 73%

“…Until now, there are only few reports on the application of CNTs as a catalyst support of Pd-based catalysts for formic acid electrooxidation [10,46]. Pd on MWCNTs has been shown to be an efficient catalyst of formic acid oxidation [10].…”

Section: Introductionmentioning

confidence: 99%

Palladium and Palladium Gold Catalysts Supported on MWCNTs for Electrooxidation of Formic Acid

Chen

Liou

et al. 2010

Fuel Cells

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“…Conversely, the PtPd/HPC500 shows high mass activity due to the good dispersion of catalysts nanoparticles inside HPC, but there remains sufficiently high surface activity. The mass activity is somewhat lower than that reported in the literature for Pd catalysts [15], but it is in the order of other supported PtPd catalysts [16]. As reported before by several groups, the presence of Pt results in a more stable response of the current [14,17].…”

Section: mentioning

confidence: 43%

Formic Acid Oxidation over Hierarchical Porous Carbon Containing PtPd Catalysts

et al. 2013

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Abstract:The use of high surface monolithic carbon as support for catalysts offers important advantage, such as elimination of the ohmic drop originated in the interparticle contact and improved mass transport by ad-hoc pore design. Moreover, the approach discussed here has the advantage that it allows the synthesis of materials having a multimodal porous size distribution, with each pore size contributing to the desired properties. On the other hand, the monolithic nature of the porous support also imposes new challenges for metal loading.

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“…It was found that Pd catalyst initially shows high activity for formic acid oxidation, but the steady state activities are higher on PdPt than on Pd. It was reported that the catalytic activity and stability of Pd were increased by addition of another precious metal into the catalyst, such as Au [22], Pt [23] or Ir [24]. Non-noble metals such as Pb [25], Sn [22,26], Co [27,28] and boron [29] have also been used as promoters for formic acid catalytic electrooxidation.…”

Section: Introductionmentioning

confidence: 99%

Highly active carbon-supported PdNi catalyst for formic acid electrooxidation

Gao

Wang

et al. 2010

J Appl Electrochem

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A new carbon-supported PdNi (PdNi/C) catalyst is prepared by a simple simultaneous reduction reaction with sodium borohydride in glycol solution. The results show that the performance of PdNi/C catalyst for formic acid oxidation is greatly improved compared with that of Pd/C. X-ray diffraction (XRD) results show that Ni exists in the catalyst both as NiO and as PdNi alloy. The value of the apparent activation energy shows that the activity of formic acid oxidation on the PdNi/C is more sensitive to temperature compared with Pd/C.

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Carbon nanotubes supported PtPd hollow nanospheres for formic acid electrooxidation

Cited by 114 publications

References 34 publications

Palladium and Palladium Gold Catalysts Supported on MWCNTs for Electrooxidation of Formic Acid

Palladium and Palladium Gold Catalysts Supported on MWCNTs for Electrooxidation of Formic Acid

Formic Acid Oxidation over Hierarchical Porous Carbon Containing PtPd Catalysts

Highly active carbon-supported PdNi catalyst for formic acid electrooxidation

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