期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 117, 期 19, 页码 9826-9834出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp400502y
关键词
-
资金
- National 973 program of China [2012CB215500]
- NSFC [21073094, 21273116]
- United Fund of NSFC
- Yunnan Province [U1137602]
- Industry-Academia Cooperation Innovation Fund Project of Jiangsu Province [BY2012001]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
Well-defined and strikingly monomorphic Pt-Pd alloy nanoflowers (Pt-Pd ANFs) with dominant {111} facets were successfully synthesized through a facile cochemical reduction method in a poly(allylamine hydrochloride) (PAR) based aqueous solution. The detailed morphology, composition, and structure of the Pt-Pd ANFs were investigated by transmission electron Microscopy (TEM); selected-area electron diffraction (SAED), energy dispersive spectrum (EDS), nitrogen adsorption-desorption isotherms, (SADI), EDS mapping, X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS), demonstrating the Pt-Pd ANFs were highly porous and a self-supported structure. The formation mechanism of the Pt-Pd ANFs were investigated by TEM and Fourier transform infrared (FT-IR), indicating that the existence of PAH and rapid growth of crystal, nuclei were essential for the formation of the Pt-Pd ANFs. The electrocatalytic activity and stability of the Pt-Pd ANFs for the oxygen reduction reaction (ORR) were investigated by rotating disk electrode voltammetry in 0.1 M HClO4 solution. The electrochemical tests indicated the {111}-enclosed Pt-Pd ANFs exhibited superior ORR activity along with satisfactory stability and methanol-tolerant. ability under acidic conditions,, which made them promising electrocatalysts for the future.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据