Enhanced thermal conductivity of nanofluids containing Ag/MWNT composites

被引：85

作者：

Chen, Lifei ^{[1
]}

Yu, Wei ^{[1
]}

Xie, Huaqing ^{[1
]}

机构：

[1] Shanghai Second Polytech Univ, Sch Urban Dev & Environm Engn, Shanghai 201209, Peoples R China

来源：

POWDER TECHNOLOGY | 2012年 / 231卷

基金：

美国国家科学基金会;

关键词：

Carbon nanotubes; Nanoparticles; Nanocomposites; Silver; WALLED CARBON NANOTUBES; SILVER NANOPARTICLES; AG NANOPARTICLES; SELECTIVE ATTACHMENT; GOLD NANOPARTICLES; OPTICAL-PROPERTIES; DECORATION; DEPOSITION; OXIDATION; SURFACES;

D O I：

10.1016/j.powtec.2012.07.028

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A green method was applied to prepare composites of multi-walled carbon nanotubes (MWNTs) decorated with silver nanoparticles (Ag-NPs). The MWNTs were functionalized by using mechanical ball milling technology in the presence of ammonium bicarbonate. The functionalized MWNTs were decorated with Ag-NPs by the traditional method of using a silver mirror reaction. Scanning electron microscopy (SEM) characterization showed that Ag-NPs distributed uniformly on the walls of MWNTs. The content and size of Ag-NPs could be controlled by adjusting the reducing time. The X-ray diffraction (XRD) patterns demonstrated that the Ag-NPs crystallized well. The resulting Ag/MWNT composites were used to prepare a water based nanofluid. The nanofluid showed higher thermal conductivity compared to that of a nanofluid containing MWNTs with functionalized surfaces. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：18 / 20

页数：3

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