爆轰法合成碳包覆镍纳米颗粒的研究

罗宁; 李晓杰; 费鸿禄; 莫非; 张程娇

doi:10.11858/gywlxb.2011.02.003

爆轰法合成碳包覆镍纳米颗粒的研究

doi: 10.11858/gywlxb.2011.02.003

1.
辽宁工程技术大学爆破技术研究院，辽宁阜新 123000；
2.
大连理工大学工业装备结构分析国家重点实验室，辽宁大连 116024

详细信息

通讯作者:
罗宁

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出版历程
- 收稿日期: 2009-11-11
- 修回日期: 2010-01-15
- 发布日期: 2011-04-15

Detonation Synthesis of Carbon-Encapsulated Nickel Nanoparticles

1.
Institute of Blasting Technology, Liaoning Technical University, Fuxin 123000, China;
2.
State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China

More Information

Corresponding author: LUO Ning

摘要

摘要: 采用自制的负氧平衡复合炸药前驱体，在密闭容器中充氮气保护下爆轰合成了碳包覆镍纳米颗粒。利用X射线衍射、X射线荧光、透射电镜和拉曼光谱等技术，对爆炸产物的组成成分、结构形貌等进行了观测。结果表明，爆轰产物主要由具有面心立方结构的镍晶核和碳元素构成，此外还含有其它微量元素；合成的纳米颗粒呈球形或椭球形状，颗粒尺寸主要分布在10~25 nm范围，包覆的碳壳厚度约1~2 nm，核壳结构完备。结合观测结果，对爆轰法合成碳包覆纳米颗粒的形成机制进行了简单的讨论。
- 碳包覆镍纳米颗粒 /
- 爆轰合成 /
- X射线衍射 /
- 合成机制
Abstract: Carbon-encapsulated nickel nanoparticles (CENNPs) with core-shell structure were synthesized by detonation method using homemade composite explosives with negative oxygen balance. The detonation chemical reaction was initiated by a nonel tube detonator in a closed explosion vessel filled with nitrogen gas. X-ray diffraction (XRD), X-ray fluorescence (XRF), transmission electron microscopy (TEM) with selected area electron diffraction and Raman spectrum techniques were used to characterize the as-obtained detonation products. The XRD and XRF analysis showed that the detonation products mainly consisted of the well-crystallized face-centered cubic nickel nanocrystals, carbon and other microelement. TEM showed that most nanoparticles are made up of a nickel core with the size of 10~25 nm and a carbon shell with the thickness of 1~2 nm. The Raman spectrum analysis indicated that the coating carbon shell is mainly composed of graphite and amorphous carbon. Furthermore, the possible formation mechanism for CENNPs were also discussed.
- carbon-encapsulated nickel nanoparticles /
- detonation synthesis /
- X-ray diffraction /
- formation mechanism

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