Growth of Pt-Pd Nanoparticles Studied In Situ by HRTEM in a Liquid Cell

被引：51

作者：

De Clercq, Astrid ^{[1
,2
]}

Dachraoui, Walid ^{[1
]}

Margeat, Olivier ^{[1
]}

Pelzer, Katrin ^{[2
]}

Henry, Claude R. ^{[1
]}

Giorgio, Suzanne ^{[1
]}

机构：

[1] Aix Marseille Univ, CNRS, CINaM UMR 7325, F-13288 Marseille, France

[2] Aix Marseille Univ, CNRS, MADIREL UMR 7246, F-13397 Marseille, France

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2014年 / 5卷 / 12期

关键词：

TRANSMISSION ELECTRON-MICROSCOPY; NANOCRYSTAL GROWTH; CATALYSTS; CLUSTERS;

D O I：

10.1021/jz500690a

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 growth of Pt-Pd nanoparticles from organometallic precursors is studied in situ in real time by HRTEM in a graphene oxide liquid cell. The reduction of the metal precursors is induced by the electron beam. During the growth, the particles rearrange their internal structure to form faceted single crystals. The growth is compatible with the Lifshitz-Slyozov-Wagner (LSW) mechanism in the limiting case of a reaction-limited process. The same particles are also synthesized ex situ by using a chemical reducing agent and observed in HRTEM.

引用

页码：2126 / 2130

页数：5

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