On the interpretation of XPS spectra of metal (Pt, Pt-Sn) nanoparticle/graphene systems

被引：58

作者：

Paparazzo, Ernesto ^{[1
]}

机构：

[1] CNR, Ist Struttura Mat, I-00133 Rome, Italy

来源：

CARBON | 2013年 / 63卷

关键词：

METHANOL;

D O I：

10.1016/j.carbon.2013.07.004

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This Letter discusses the X-ray photoelectron spectroscopy (XPS) results of an article on Pt and Pt-Sn nanoparticles dispersed on graphene nanosheets. I argue that the authors' interpretation is largely unwarranted because it neglects the spin-orbit multiplicity and the branching ratio of XPS signals arising from electron levels with 1 > 0, and the fact that XPS peaks of given electron levels and given chemical species possess precise full with at half maximum (FWHM) values, and binding energy (BE) values. I suggest an interpretation which offers a more accurate insight into the chemical composition and the catalytic properties of these nanoparticle systems. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：578 / 581

页数：4

共 11 条

[1] The electro-oxidation of carbon monoxide, hydrogen/carbon monoxide and methanol in acid medium on Pt-Sn catalysts for low-temperature fuel cells: A comparative review of the effect of Pt-Sn structural characteristics [J].