期刊
NANOTECHNOLOGY
卷 27, 期 17, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/27/17/175604
关键词
carbon; nanoparticles; silver; electron beam
资金
- Natural Environment Research Council (NERC)
- Natural Environment Research Council [NE/L006782/1, NE/L006138/1] Funding Source: researchfish
- NERC [NE/L006782/1, NE/L006138/1] Funding Source: UKRI
In this work, the cutting of carbon nanotubes is investigated using silver nanoparticles deposited on arc discharge multi-walled carbon nanotubes. The composite is subsequently heated in air to fabricate shortened multi-walled nanotubes. Complementary transmission electron microscopy and spectroscopy techniques shed light on the cutting mechanism. The nanotube cutting is catalysed by the fundamental mechanism based on the coordination of the silver atoms to the pi-bonds of carbon nanotubes. As a result of the metal coordination, the strength of the carbon-carbon bond is reduced, promoting the oxidation of carbon at lower temperature when heated in air, or lowering the activation energy required for the removal of carbon atoms by electron beam irradiation, assuring in both cases the cutting of the nanotubes.
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