ZIRCONIUM-OXIDE SUPPORTED ON PD(100) - CHARACTERIZATION BY SCANNING TUNNELING MICROSCOPY AND TUNNELING SPECTROSCOPY

被引：11

作者：

ASAKURA, K ^{[1
]}

IWASAWA, Y ^{[1
]}

PURNELL, SK ^{[1
]}

WATSON, BA ^{[1
]}

BARTEAU, MA ^{[1
]}

GATES, BC ^{[1
]}

机构：

[1] UNIV DELAWARE,DEPT CHEM ENGN,CTR CATALYT SCI & TECHNOL,NEWARK,DE 19716

来源：

CATALYSIS LETTERS | 1992年 / 15卷 / 04期

关键词：

ZIRCONIUM OXIDE; PALLADIUM; SCANNING TUNNELING MICROSCOPY; TUNNELING SPECTROSCOPY;

D O I：

10.1007/BF00769154

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：

Scanning tunneling microscopy (STM) and tunneling spectroscopy (TS) were used to characterize the structure of a model metal-supported dispersed metal oxide, ZrO2 on Pd(100). STM images illustrate changes in the surface morphology of the ZrO2 resulting from various chemical treatments. When the sample was treated in O2, the ZrO2 appeared as a smooth, featureless overlayer of varying thickness wetting the Pd. After treatment in H-2, the ZrO2 formed non-wetting particles on the Pd, with a sharp Pd-ZrO2 interface. TS provided a fingerprint that verified the presence of a semiconducting overlayer on a metallic support. These results appear to be consistent with X-ray absorption spectra of ZrO2 supported on Pd black, reported elsewhere.

引用

页码：317 / 327

页数：11

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