Monodisperse copper- and silver-nanocolloids suitable for heat-conductive fluids

被引：58

作者：

Bönnemann, H

Botha, SS

Bladergroen, B

Linkov, VM

机构：

[1] Max Planck Inst Kohlenforsch, D-45466 Mulheim, Germany

[2] Univ Western Cape, Dept Chem, S African Inst Adv Mat Chem, ZA-7535 Bellville, South Africa

来源：

APPLIED ORGANOMETALLIC CHEMISTRY | 2005年 / 19卷 / 06期

关键词：

silver; copper; nanofluids; heat conductive media;

D O I：

10.1002/aoc.889

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Copper colloid was prepared via reductive stabilization. The suspension of the trioctylaluminumstabilized copper colloid was peptized using Korantin SH and cashew nut shell liquid (CNSL). Fluids with particle sizes < 10 nm were obtained with Korantin and 7-15 nm in the case of CNSL. However, the copper colloid is air sensitive. A very straightforward one-step method leads to air-stable silver nanofluids. Thermal decomposition of silver lactate in the presence of Korantin SH and mineral oil as the medium gave a silver nanofluid. Silver particle formation and air stability were monitored using UV-VIS spectroscopy. The presence of mortodispersed spherical silver nanoparticles was confirmed. Transmission electron microscopy showed a two-dimensional assembly of the silver particles with a size distribution of 9.5 +/- 0.7 nm. FTIR has revealed information about the interaction between the surfactant and the silver surface. Copyright (c) 2005 John Wiley & Sons, Ltd.

引用

页码：768 / 773

页数：6

共 26 条

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