Thermal induced structural transformation of bimetallic AuPd nanoparticles

Thermal induced structural transformation of bimetallic AuPd nanoparticles
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双金属 AuPd 纳米粒子的热诱导结构转变

DOI:
10.1088/1742-6596/522/1/012079
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发表时间:
2014
期刊:
Conference Series
影响因子:
--
通讯作者:
Bruma A
Bruma A
中科院分区:
--
文献类型:
--
作者:
Bruma A

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利用高角环形暗场扫描透射电子显微镜(HAADF-STEM)研究了物理气相沉积法制备的AuPd纳米粒子结构转变的热效应。原子分辨成像分析表明,在500 K的温度下,退火过程中形成了从有序L1 2超晶格到核壳结构的各种结构形态。Pd氧化物的影响也进行了讨论。
High Angle Annular Dark Field Scanning Transmission Electron Microscope (HAADF-STEM) has been employed for the study of thermal effects of structural transformation of AuPd nanoparticles produced by physical vapour deposition. Depending on the duration of annealing at a temperature of 500 K, atomic resolved imaging analysis reveals the formation of various structure morphologies from the ordered L1 2 superlattice to the core-shell structure. The effects of Pd-oxides are also discussed.
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