The effect of thermal treatment on the atomic structure of PtCu core-shell nanoparticles in PtCu/C electrocatalysts

被引：0

作者：

Shemet, D. B. ^{[1
]}

Pryadchenko, V. V. ^{[1
]}

Srabionyan, V. V. ^{[1
]}

Belenov, S. B. ^{[1
]}

Mikheykin, A. S. ^{[1
]}

Avakyan, L. A. ^{[1
]}

Guterman, V. E. ^{[1
]}

Bugaev, L. A. ^{[1
]}

机构：

[1] Southern Fed Univ, Rostov Na Donu, Russia

来源：

III INTERNATIONAL CONFERENCE ON SMALL ANGLE NEUTRON SCATTERING DEDICATED TO THE 80TH ANNIVERSARY OF YU.M. OSTANEVICH | 2017年 / 848卷

关键词：

OXYGEN REDUCTION REACTION; SPECTROSCOPY; ALLOYS; EXAFS;

D O I：

10.1088/1742-6596/848/1/012018

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Nanocatalysts PtCu/C with core-shell structure of PtCu nanoparticles were synthesized by the method of sequential chemical reduction of Cu2+ and Pt(IV) in carbon suspension, prepared on the basis of ethylene glycol-water solvent. The characterization of atomic structure of "as prepared" PtCu nanoparticles and obtained after thermal treatment at 350 degrees C was performed by Pt L-3- and Cu K-edge extended X-ray absorption fine structure (EXAFS), complemented with TEM and XRD studies. The processing of EXAFS was performed by the technique that enables to reduce the effect of correlations among fitting parameters on the determined values of local structure parameters of the absorbing atoms, which have the nearest surrounding consisting both Pt and Cu atoms.

引用

页数：5

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