Room Temperature Oxidation of the Surface of Highly Oriented Pyrolytic Graphite (HOPG) with Nitrogen Dioxide in the Presence of Supported Palladium Particles

被引：6
|
作者：
Smirnov, M. Yu. [1 ]
Kalinkin, A. V. [1 ]
Sorokin, A. M. [1 ]
Bukhtiyarov, V. I. [1 ]
机构：
[1] Russian Acad Sci, Boreskov Inst Catalysis, Siberian Branch, Novosibirsk 630090, Russia
来源：
KINETICS AND CATALYSIS | 2020年 / 61卷 / 04期
关键词：
palladium; highly oriented pyrolytic graphite (HOPG); NO2; X-ray photoelectron spectroscopy (XPS); X-RAY PHOTOELECTRON; IN-SITU XPS; PLATINUM PARTICLES; PD NANOPARTICLES; GRAPHENE OXIDE; THERMAL-STABILITY; PD(111) OXIDATION; OXYGEN; SIZE; MODEL;
D O I：
10.1134/S0023158420040126
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：
The interaction of palladium nanoparticles (average size, similar to 3 nm) deposited on the surface of highly oriented pyrolytic graphite (HOPG) with nitrogen dioxide at room temperature and a pressure of 10(-6)or 10(-5)mbar was studied by X-ray photoelectron spectroscopy (XPS). It was shown that the structure of several surface graphene layers was destroyed under these conditions due to the oxidation of carbon at the interface between Pd and HOPG. The reaction proceeded with the participation of oxygen atoms, which were formed as a result of the dissociation of NO(2)molecules on the palladium surface. Palladium particles retained their metallic nature, but they penetrated deep into graphite in this case.
引用
收藏
页码：637 / 645
页数：9
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