Electrochemical preparation and characterization of PdPt nanocages with improved electrocatalytic activity toward oxygen reduction reaction
Electrochemical preparation and characterization of PdPt nanocages with improved electrocatalytic activity toward oxygen reduction reaction
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具有改进的氧还原反应电催化活性的 PdPt 纳米笼的电化学制备和表征
DOI：
10.1016/j.electacta.2013.04.045
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发表时间：
2013-07
影响因子：
6.6
通讯作者：
Geng Zhang, Zhi-Gang Shao, Wangting Lu, Feng Xi
中科院分区：
文献类型：
--
作者：
Geng Zhang, Zhi-Gang Shao, Wangting Lu, Feng Xi
在0.5M硫酸水溶液中，对核壳结构的Pd@Pt纳米枝晶进行循环电位处理，使Pd核溶解，Pd@Pt结构转变为空心纳米笼。通过高分辨透射电镜（HRTEM）、扫描电镜-能量色散X射线能谱（STEM-EDX）、X射线衍射（XRD）和循环伏安（CV）等测试手段，证实了纳米笼由PdPt纳米合金组成。与Pd@Pt纳米枝晶和商业Pt/C催化剂相比，PdPt纳米笼由于合金化效应和特殊的形貌，对氧还原反应表现出上级催化活性。在长期耐久性测试后仍然保持纳米笼形态，表明良好的结构稳定性。
Hollow PdPt nanocages were prepared by applying potential cycling treatment on core–shell Pd@Pt nanodendrites in 0.5M sulfuric acid aqueous solutions, during which Pd core was dissolved and the Pd@Pt structure was transformed to hollow nanocages. The nanocages were comprised of bimetallic PdPt nanoalloys, which was confirmed by high-resolution TEM (HRTEM), scanning TEM-energy dispersive X-ray spectra (STEM-EDX), X-ray diffraction (XRD) and cyclic voltammetry (CV). The PdPt nanocages presented superior catalytic activity toward oxygen reduction reaction in comparison with Pd@Pt nanodendrites and commercial Pt/C catalysts owing to the alloying effect and special morphology. The nanocage morphology was still maintained after long-term durability testing, indicating good structure stability.
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DOI：
10.1039/c2cp42716h
发表时间：
2012-10
期刊：
Physical chemistry chemical physics : PCCP
影响因子：
--
作者：
Chiajen Hsu;Chienwen Huang;Y. Hao;Fuqiang Liu
通讯作者：
Chiajen Hsu;Chienwen Huang;Y. Hao;Fuqiang Liu
影响因子：
15
作者：
Wang, Liang;Nemoto, Yoshihiro;Yamauchi, Yusuke
通讯作者：
Yamauchi, Yusuke
影响因子：
15
作者：
Snyder, Joshua;McCue, Ian;Erlebacher, Jonah
通讯作者：
Erlebacher, Jonah
影响因子：
22.1
作者：
Xu, Zhuang;Zhang, Huamin;Su, Dangsheng
通讯作者：
Su, Dangsheng
影响因子：
15
作者：
Peng, Zhenmeng;Yang, Hong
通讯作者：
Yang, Hong