Hydrogen co-reduction synthesis of PdPtNi alloy nanoparticles on carbon nanotubes as enhanced catalyst for formic acid electrooxidation
Hydrogen co-reduction synthesis of PdPtNi alloy nanoparticles on carbon nanotubes as enhanced catalyst for formic acid electrooxidation
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碳纳米管上氢共还原合成 PdPtNi 合金纳米粒子作为甲酸电氧化增强催化剂
DOI：
10.1016/j.ijhydene.2016.05.198
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发表时间：
2017-03
影响因子：
7.2
通讯作者：
You-Jun Fan
中科院分区：
文献类型：
--
作者：
Jun-Ming Zhang;Rui-Xiang Wang;Rui-Jiao Nong;Yang Li;Xiao-Jie Zhang;Pan-Yu Zhang;You-Jun Fan
采用简单的氢共还原法制备了一种负载于多壁碳纳米管（MWCNTs）上的PdPtNi三元合金纳米粒子对甲酸氧化（FAO）反应的新型电催化剂。采用X射线衍射（XRD）、透射电子显微镜（TEM）、X射线能量色散谱（EDX）和X射线光电子能谱（XPS）对催化剂进行了表征。结果表明，高分散的PdPtNi合金纳米粒子具有良好的分散性和良好的热稳定性。2.56纳米的Pd均匀地沉积在MWCNT表面，与Pt和Ni的合金化改变了Pd原子的电子结构，使Pd d-带中心下移。循环伏安法和计时电流法的研究表明，与PdPt/MWCNT和商业Pd/C催化剂相比，PdPtNi/MWCNT对FAO的电催化活性和耐久性显著提高。该研究表明，制备的PdPtNi/MWCNT复合材料是一种很有前途的直接甲酸燃料电池阳极电催化剂。
A novel electrocatalyst of PdPtNi ternary alloy nanoparticles supported on multi-walled carbon nanotubes (MWCNTs) for formic acid oxidation (FAO) reaction is synthesized by a simple hydrogen co-reduction process. The as-synthesized catalysts were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), energy dispersive X-ray (EDX) spectroscopy and X-ray photoelectron spectroscopy (XPS). It is found that highly dispersed PdPtNi alloy nanoparticles of ca. 2.56 nm are homogeneously deposited on the MWCNT surface, and the alloying with Pt and Ni alters the electronic structure of Pd atoms with the downshift of Pd d-band center. Studies of cyclic voltammetry and chronoamperometry indicate that the electrocatalytic activity and durability of the PdPtNi/MWCNT for FAO are significantly enhanced as compared with the PdPt/MWCNT and commercial Pd/C catalysts. This study implies that the prepared PdPtNi/MWCNT composite is a promising anode electrocatalyst of direct formic acid fuel cells.
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