XPS and STM study of carbon deposits at the surface of platinum (110)

被引：19

作者：

Kvon, RI ^{[1
]}

Boronin, AI ^{[1
]}

Shaikhutdinov, SK ^{[1
]}

Buyanov, RA ^{[1
]}

机构：

[1] Russian Acad Sci, Boreskov Inst Catalysis, SB, Novomoskovsk 630090, Russia

来源：

APPLIED SURFACE SCIENCE | 1997年 / 120卷 / 3-4期

关键词：

XPS; carbon; platinum;

D O I：

10.1016/S0169-4332(97)00251-1

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 deposition of carbon due to high temperature ethylene decomposition at Pt(110) was studied by XPS and STM techniques. In the temperature range 700-1400 K no graphite species were observed. Instead, two carbon states were distinguished by XPS. At temperatures 700-850 K chemisorbed carbon layer is formed with BE(Cls) = 284.2 eV, this carbon state reacting readily with both oxygen and hydrogen. At T > 850 K carbon layer with BE(Cls)= 284.6-284.9 eV is formed. Further study showed this carbon species to be stable up to 1150 K and to be inert towards both hydrogen and oxygen up to 1000 K. This state was attributed to diamond-like carbon (DLC). STM study of DLC on Pt(110) revealed the patched pseudo-C-(3 x 1) structure. This reconstruction is believed to account for the DLC formation at platinum (110) surface. (C) 1997 Elsevier Science B.V.

引用

页码：239 / 242

页数：4

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