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- W816870791 abstract "Controlling the elemental composition of Pt-based bimetallic nanostructures plays an important role in catalytic activity. Herein, we synthesized Pt-Ag bimetallic nanochains with various compositions via bipolar pulsed discharges in water. The composition of Pt-Ag bimetallic nanochains was controlled by varying the pulse duration in a range from 1.3 to 2.3 μs, which could determine the different plasma-assisted oxidation states and subsequent decomposition of the oxide layer that was dependent on the thermal parameters of Pt and Ag. The transmission electron microscopy revealed that the nanochain structure was constructed via the attachment of Pt-Ag alloyed nanoparticles. With increasing Ag content, the higher binding energy of the Pt 4f peak in the XPS spectra due to the electron transfer from Ag to Pt atoms was observed, and subsequently the Ag2O to metallic Ag ratio increased. The electrochemical measurements for methanol oxidation revealed that the electrocatalytic activity, stability and durability of the Pt71Ag29 bimetallic nanoparticles were superior, which could be attributed to the synergistic effect of the Ag oxide and the downshift of the d-band center via electronic modification." @default.
- W816870791 created "2016-06-24" @default.
- W816870791 creator A5026744498 @default.
- W816870791 creator A5065726212 @default.
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- W816870791 date "2015-08-01" @default.
- W816870791 modified "2023-10-14" @default.
- W816870791 title "The composition-controlled synthesis of Pt-Ag bimetallic nanochains for catalytic methanol oxidation" @default.
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- W816870791 doi "https://doi.org/10.1016/j.electacta.2015.06.114" @default.
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