Comparison of AFM and HRTEM to determine the metal particle morphology and loading of an Au/TiO2 catalyst

被引：11

作者：

Dokou, E

Stangland, EE

Andres, RP

Delgass, WN

Barteau, MA ^{[1
]}

机构：

[1] Univ Delaware, Dept Chem Engn, Ctr Catalyt Sci & Technol, Newark, DE 19716 USA

[2] Purdue Univ, Sch Chem Engn, W Lafayette, IN 47907 USA

来源：

CATALYSIS LETTERS | 2000年 / 70卷 / 1-2期

关键词：

supported metal catalysts; Au/TiO2; catalyst; catalyst characterization; atomic force microscopy; high-resolution transmission electron microscopy;

D O I：

10.1023/A:1019035821026

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：

Atomic force microscopy (AFM) has been used to study the morphology of an ultrafine gold-on-titania catalyst. By using TappingMode(TM) AFM (TMAFM) and SuperSharp silicon probes to minimize tip radius artifacts, we determined values for the average Au particle diameter and the gold loading in good agreement with high-resolution transmission electron microscopy (HRTEM) results. These results demonstrate the ability of AFM to characterize real supported metal catalysts with small metal particles (<5 nm) and low metal loadings, achieving resolution comparable to HRTEM, but in the ambient environment.

引用

页码：1 / 7

页数：7

共 61 条

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