Preparation of tractable platinum, rhodium, and ruthenium nanoclusters with small particle size in organic media

被引：550

作者：

Wang, Y ^{[1
]}

Ren, JW ^{[1
]}

Deng, K ^{[1
]}

Gui, LL ^{[1
]}

Tang, YQ ^{[1
]}

机构：

[1] Peking Univ, State Key Lab Struct Chem Unstable & Stable Speci, Inst Phys Chem, Beijing 100871, Peoples R China

来源：

CHEMISTRY OF MATERIALS | 2000年 / 12卷 / 06期

关键词：

D O I：

10.1021/cm0000853

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：

In the absence of any usual protective agent, stable platinum, rhodium, and ruthenium metal nanoclusters with small particle size in organic media are effectively prepared by heating corresponding metal hydroxide colloids in ethylene glycol containing NaOH for the first time. The average diameters of the Pt, Ph, and Ru nanoclusters determined by means of transmission electron microscopy are in a range from 1 to 2 nm. The particle size distribution in each colloidal solution is sharp, within 2 nm wide. Studies on the preparation conditions and some properties of the "unprotected" Pt metal nanoclusters have been carried out. By adjusting pH, it is convenient to separate the Pt nanocluster as a precipitate from glycol solvent, and the precipitated Pt nanoclusters can easily be "dissolved" in many organic solvents to form transparent Pt nanocluster solutions with high concentration in the absence of usual protective agents. The "unprotected" Pt nanoclusters can also be easily transformed to various protected Pt nanoclusters with the same Pt cores and can be extracted into toluene by forming PPh3-modified Pt clusters.

引用

页码：1622 / 1627

页数：6

共 29 条

[1] Self-assembly of a two-dimensional superlattice of molecularly linked metal clusters [J].