Microwave arcing induced formation and growth mechanisms of core/shell metal/carbon nanoparticles in organic solutions

被引：68

作者：

Hsin, Yu-Lin ^{[1
]}

Lin, Chia-Fen ^{[1
]}

Liang, Yu-Chia ^{[1
]}

Hwang, Kuo Chu ^{[1
]}

Horng, Jia-Cherng ^{[1
]}

Ho, Ja-an Annie ^{[1
]}

Lin, Chun-Cheng ^{[1
]}

Hwu, Jih Ru ^{[1
]}

机构：

[1] Natl Tsing Hua Univ, Dept Chem, Hsinchu, Taiwan

来源：

ADVANCED FUNCTIONAL MATERIALS | 2008年 / 18卷 / 14期

关键词：

D O I：

10.1002/adfm.200701407

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Well-graphitized core/shell iron/carbon nanoparticles (Fe@CNPs) were formed in toluene solutions containing Fe(CO)5-C60/70 via an novel microwave arcing process. High temperature y-Fe phase was found to be stable at room temperature when encapsulated inside graphene shells. In the absence Of C60/70, the structures of graphene shells are poor. Pre-synthesized Co nanoparticles were used as templates for the growth of graphene shells in toluene-C60/70 solutions. Via acid etching and removal of the central core Co nanoparticles, hollow carbon nanoparticles could be obtained. Further thermal annealing by focused microwave irradiation leads to merging of small core/shell metal/carbon nanoparticles into large ones, as well as conversion of body centered cubic (bee) a-Fe to face centered cubic (fee) y-Fe. The possible growth mechanisms of core/shell metal/carbon nanoparticles were discussed.

引用

页码：2048 / 2056

页数：9

共 70 条

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