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• W2076771036 endingPage "385602" @default.
• W2076771036 startingPage "385602" @default.
• W2076771036 abstract "We describe the decoration of multiwalled carbon nanotubes (MCNTs) with Pt–Pd alloy nanoelectrocatalysts of three different compositions and their electrocatalytic performance toward the oxygen reduction reaction (ORR). The decoration of the MCNTs involves polymer-assisted impregnation of metal precursors and and the subsequent reduction of the impregnated precursors by a modified polyol route. The composition of the catalyst was controlled by tuning the molar ratio of the precursors during their impregnation. Electron probe microscopic analysis shows that the catalysts have compositions of Pt46Pd54, Pt64Pd36 and Pt28Pd72. The Pt46Pd54 and Pt64Pd36 catalysts have truncated octahedral and icosahedral shapes with a size ranging from 8 to 10 nm. On the other hand, the catalyst of Pt28Pd72 composition has a spherical/quasispherical shape with a size distribution of 1–2 nm. The XPS measurement confirms the signature of metallic Pt and Pd. The Pt46Pd54 catalyst has a pronounced electrocatalytic activity toward the ORR with a specific and mass activity of 378 and , respectively at 0.8 V. Moreover, the Pt46Pd54 nanoelectrocatalyst is highly durable and it retains its initial catalytic activity even after 1000 extensive cycles. Interestingly, this catalyst has a very high tolerance toward methanol and it does not favor the oxidation of methanol in the potential window of 0.1–1.4 V. The electrocatalytic activity of the alloy electrocatalyst is compared with commercially available Pt black and MCNT-supported spherical Pt nanoparticles. The catalytic activity of the Pt46Pd54 nanoelectrocatalyst is higher than the other catalysts. The Pt46Pd54 catalyst outperforms the electrocatalytic activity of all other catalysts." @default.
• W2076771036 created "2016-06-24" @default.
• W2076771036 creator A5001609747 @default.
• W2076771036 creator A5041189118 @default.
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• W2076771036 date "2012-09-04" @default.
• W2076771036 modified "2023-10-06" @default.
• W2076771036 title "Pt–Pd alloy nanoparticle-decorated carbon nanotubes: a durable and methanol tolerant oxygen reduction electrocatalyst" @default.
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• W2076771036 doi "https://doi.org/10.1088/0957-4484/23/38/385602" @default.
• W2076771036 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/22948751" @default.
• W2076771036 hasPublicationYear "2012" @default.
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