Green synthesis of Pt-on-Pd bimetallic nanodendrites on graphene via in situ reduction, and their enhanced electrocatalytic activity for methanol oxidation
Green synthesis of Pt-on-Pd bimetallic nanodendrites on graphene via in situ reduction, and their enhanced electrocatalytic activity for methanol oxidation
复制标题
原位还原绿色合成石墨烯上Pt-on-Pd双金属纳米枝晶及其增强的甲醇氧化电催化活性
DOI：
10.1016/j.electacta.2014.02.055
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发表时间：
2014-05
影响因子：
6.6
通讯作者：
Chen Xi
中科院分区：
文献类型：
--
作者：
Cai Zhixiong;Liu Congcong;Wu Genghuang;Chen Xiaomei;Chen Xi
采用先混合石墨烯和PdCl42−，然后加入PtCl42−和乙醇的两步法制备了以Pd为内层，外为树枝状铂的PtPdNDs。用透射电子显微镜、高分辨电子显微镜、X射线能谱和光电子能谱对所制备的GPtPdNDs的形貌、结构和组成进行了表征。由于合成过程中不涉及卤离子(特别是Br-，I-−)或表面活性剂，因此将制备的GPtPdND直接修饰到玻碳电极上，在不经任何预处理的情况下，对甲醇氧化表现出良好的电催化性能。此外，由于PtPdNDs的特殊结构以及铂和钯的协同效应以及石墨烯促进电子传递的作用，GPtPdNDs复合材料在甲醇氧化反应中表现出更高的电催化活性和对石墨烯负载的铂纳米颗粒(GPtNPs)和铂/C更好的耐受性。
A green synthesis of Pt-on-Pd bimetallic nanodendrites supported on graphene (GPtPdNDs) with a Pd interior and a dendrite-like Pt exterior was achieved using a two-step preparation, mixing graphene and PdCl42−first, then adding PtCl42−and ethanol without any other solvent. The morphology, structure and composition of the thus-prepared GPtPdNDs were characterized by transmission electron microscopy (TEM), high resolution TEM, energy-dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy. Because no halide ions (refer in particular to Br-, I−) or surfactant was involved in the synthesis, the prepared GPtPdNDs were directly modified onto a glassy carbon electrode and showed excellent electrocatalytic performance in methanol oxidation without any pretreatments. Moreover, with the special structure of PtPdNDs and the synergetic effects of Pt and Pd and the enhanced electron transfer by graphene, the GPtPdNDs composites exhibited higher electrocatalytic activity and better tolerance to Pt nanoparticles supported on graphene (GPtNPs) and Pt/C for methanol oxidation.
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影响因子：
--
作者：
Hong Yang
通讯作者：
Hong Yang
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：
Chen, Shuo;Ferreira, Paulo J.;Shao-Horn, Yang
通讯作者：
Shao-Horn, Yang
氧化石墨烯上具有优异电催化性能的“清洁”且分散良好的钯纳米粒子的合成
影响因子：
15
作者：
Chen, Xiaomei;Wu, Genghuang;Wang, Xiaoru
通讯作者：
Wang, Xiaoru
DOI：
10.1002/chin.200933011
发表时间：
2009-08
期刊：
ChemInform
影响因子：
--
作者：
Byungkwon Lim;M. Jiang;P. Camargo;E. Cho;J. Tao;Xianmao Lu;Yimei Zhu;Younan Xia
通讯作者：
Byungkwon Lim;M. Jiang;P. Camargo;E. Cho;J. Tao;Xianmao Lu;Yimei Zhu;Younan Xia