Platinum Lead Nanostructures: Formation, Phase Behavior, and Electrocatalytic Properties
Platinum Lead Nanostructures: Formation, Phase Behavior, and Electrocatalytic Properties
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DOI：
10.1002/adfm.200800266
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发表时间：
2008-09
影响因子：
19
通讯作者：
Shengchun Yang;Zhenmeng Peng;Hong Yang
中科院分区：
文献类型：
--
作者：
Shengchun Yang;Zhenmeng Peng;Hong Yang
本文介绍了铂铅纳米棒的合成及其晶相行为。在温和的反应温度（180-200℃）下合成了面心立方（fcc） Pt100−xPbx （x < 50）和六方密排（hcp） Pt50Pb50纳米结构。通过改变反应时间和温度，可以控制PtPb纳米棒的晶相和组成。讨论了形成动力学或热力学稳定的PtPb纳米棒的机理。在相当低的温度下控制晶体相的方法对于合金或金属间纳米结构的设计具有重要意义，具有更广泛的应用范围。
This paper describes the synthesis and crystal phase behavior of platinum lead nanorods. Both face‐centered cubic (fcc) Pt100−xPbx (x < 50) and hexagonally close‐packed (hcp) Pt50Pb50 nanostructures are synthesized at mild reaction temperatures (180–200 °C). The crystal phase and composition of these PtPb nanorods can be controlled by changing the reaction time and temperature. A mechanism for the formation of either kinetically or thermodynamically stable PtPb nanorods is discussed. The approach developed for controlling crystal phases at fairly low temperatures can be important for the design of alloy or intermetallic nanostructures for a broader range of applications.