期刊
APPLIED SURFACE SCIENCE
卷 258, 期 2, 页码 766-773出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2011.08.085
关键词
Gamma-ray irradiation; Multi-walled carbon nanotubes; Surface properties; Raman spectroscopy; XPS
类别
资金
- Materials Research School (Tehran, Iran)
The effects of gamma-irradiation on the modification of the surface and structure of multi-walled carbon nanotubes were studied. Gamma-irradiation affected the graphitization properties of functional groups, and decreased the diameter of multi-walled carbon nanotubes. The irradiated multi-walled carbon nanotubes with the absorbed dose of 100 kGy exhibited a larger specific surface area and microporous volume as compared with the other samples. The Raman spectroscopy and X-ray photoelectron spectroscopy showed that the interaction between the gamma-irradiation and the multi-walled carbon nanotubes with the absorbed dose of 150 kGy destroyed the nanostructure of carbons, leading to the formation of diamond-like structures and carbon oxides. In addition, gamma-irradiation with the absorbed dose of 100 kGy improved multi-walled carbon nanotubes graphitization and surface properties while at higher absorbed dose (150 kGy), it induced damaged structures (sp(3) bonds and oxygen compositions). (C) 2011 Elsevier B.V. All rights reserved.
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