Proper alloying of Pt with underlying Ag nanoparticles leads to dramatic activity enhancement of Pt electrocatalyst
Proper alloying of Pt with underlying Ag nanoparticles leads to dramatic activity enhancement of Pt electrocatalyst
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Pt 与下面的 Ag 纳米颗粒的适当合金化可显着增强 Pt 电催化剂的活性
DOI:
10.1016/j.elecom.2008.04.010
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发表时间:
2008-06
影响因子:
5.4
通讯作者:
中科院分区:
文献类型:
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作者:
Nanostructures containing Pt-flecks on Ag colloids (Pt^Ag) were prepared by Pt deposition from citrate reduction of PtIVCl62-or PtIICl42-ions. The nanostructures prepared from PtIVCl62-showed more or less Pt–Ag alloying due to the galvanic replacement reaction between PtIVCl62-and metallic Ag colloids. The Pt–Ag alloying at the surface of Ag colloids was manipulated by tuning the atomic Pt/Ag ratio (m) during preparation. It was demonstrated that a proper Pt–Ag alloying in a narrow composition window (0.47⩽m⩾0.53) can led to a dramatic activity enhancement of Pt, up to one order of magnitude higher, for methanol electro-oxidation.
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影响因子:
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通讯作者:
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