SCANNING TUNNELING MICROSCOPY STUDIES OF SIZE AND MORPHOLOGY OF PT GRAPHITE CATALYSTS

被引：54

作者：

YEUNG, KL ^{[1
]}

WOLF, EE ^{[1
]}

机构：

[1] UNIV NOTRE DAME,DEPT CHEM ENGN,NOTRE DAME,IN 46556

来源：

JOURNAL OF CATALYSIS | 1992年 / 135卷 / 01期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0021-9517(92)90265-J

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 sizes and surface morphologies of reduced Pt crystallites supported on three different graphitic substrates are examined with scanning tunneling microscopy (STM). The roughness of the substrates decreases the size of the catalyst crystallites without noticeable changes in morphology. Functionalization of the substrate with HNO3 results in considerable changes in both size and shape distribution of the supported catalysts. Crystallites supported on unfunctionalized graphites are rectangular parallelepiped with rounded corners, while those supported on functionalized NGHPG are more irregular in shape and more heterogeneous. © 1992.

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页码：13 / 26

页数：14

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