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原位包覆金屬納米粒子的規?;苽浼皯?/h1>

收稿日期:2009-08-04原位包覆金屬納米粒子的規?;苽浼皯?/p>

鄭碧娟1,何俊武1,2,胡軍輝1,2

(1.深圳華中科技大學研究院,廣東深圳518057)

(2.深圳市尊業納米材料有限公司,廣東深圳518118)

摘要:介紹激光感應復合加熱制備金屬納米粒子的方法,以及基于該技術原位制備碳包覆金屬納米粒子和有機物包覆金屬納米粒子,概括了原位包覆金屬納米粒子的應用。根據實際應用條件選擇合適的包覆方法和包覆材料,可以極大地提高金屬納米粒子的產品性能和適用性,獲得更高的應用價值。

關鍵詞:金屬納米粒子;激光-感應復合加熱;碳包覆;有機物包覆

Large-scale Preparation and Application of In-situ

Coating Metal Nanoparticles

ZHENG Bi-juan1,HE Jun-wu1,2,HU Jun-hui1,2

(1Huazhong University of Science and Technology Research Institute in Shenzhen,

Shenzhen518057,China)

2Shenzhen Junye Nano Material Co.,Ltd.,Shenzhen518118,China)

Abstract:The practical application of metal nanoparticles has been seriously limited by their sensitivity to environment, such as quick oxidation reaction and losing activity in air.In-situ coating metallic nanoparticles was investigated in order to enhance the stability and retain the activity,expand the area of application.In this paper,the laser-induction complex heating method for preparation of metallic nanoparticles was introduced,and the in-situ carbon coating and organic compound coating metallic nanoparticles on the basis of the laser-induction complex heating technology were presented, at last the application directions of metallic nanoparticles complex were generalized.According to the actual application conditions,the proper coating method and materials were selected to greatly improve the performance and applicability of coating metal nanoparticles with higher application value.

Keywords:Metal nanoparticles;laser-induction complex heating method;carbon-coating;organic compound coating 中圖分類號:TF123文獻標識碼:A文章編號:1812-1918(2010)03-0010-04

0引言

金屬納米粒子比表面積大、表面能高、表面活性高及獨特的量子尺寸效應和表面效應,使其具有化學反應活性高、燒結溫度低、微波吸收等特性,因此,金屬納米粉體材料成為化工催化劑、燒結添加劑、導電漿料、潤滑油添加劑、吸波材料等功能材料的理想選材,在信息通訊、生物醫藥、微電子、有機化工、航空航天等領域顯示了極其重要的應用價值。

金屬納米粒子所具有的小尺寸和表面效應使

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