eprintid: 4455
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/44/55
datestamp: 2023-11-09 16:16:08
lastmod: 2023-11-09 16:16:08
status_changed: 2023-11-09 15:58:28
type: article
metadata_visibility: show
creators_name: Soleimani, H.
creators_name: Yahya, N.
creators_name: Latiff, N.R.A.
creators_name: Koziol, K.
creators_name: Maciejewska, B.M.
creators_name: Guan, B.H.
title: Synthesis and characterization of mesoporous multi-walled carbon nanotubes at low frequencies electromagnetic waves
ispublished: pub
keywords: Chemical vapor deposition; Dielectric materials; Electric properties; Electromagnetic fields; Electromagnetic wave absorption; Mechanical permeability; Multiwalled carbon nanotubes (MWCN); Organometallics; Permittivity measurement, Absorption abilities; Electromagnetic absorbing; Microwave absorbing materials; Morphology analysis; Multi-walled CNT; Relative permittivity; Shielding applications; Synthesis and characterizations, Electromagnetic waves
note: cited By 2
abstract: For electromagnetic absorbing and shielding applications, carbon nanotubes (CNT) are widely used due to their excellent electrical and physical properties. Fabrication of microwave absorbing materials involves the use of compounds capable of generating dielectric and/or magnetic losses when impinged by an electromagnetic wave. The presence of lattice defects e.g. vacancies and dislocations contributes to the loss and attenuation in the electromagnetic waves, which in turn remarkably enhance the absorption ability of the material. With the CVD technique which is known to produce several lattice defects in the final product, aligned MWCNTs were successfully synthesized by pyrolizing toluene and ferrocene in an inert argon environment. The morphology analysis of the aligned MWCNTs was conducted via FESEM and TEM analysis, to reveal the average length of approximately 295 μm, with diameters in the range of 60-200 nm. EDS analysis indicates the high yield of CNTs, with more than 90 in weight composition, with less than 5  Fe impurities presence. Textural properties of MWCNTs were studied by measuring pore size and BET surface area. To understand the response of CNTs to an electromagnetic field, permeability and permittivity measurement were conducted in the frequency range of 100 Hz to 110 MHz. In conclusion, the presence of defects in MWCNTs is desirable for enhanced electromagnetic absorption ability. © (2014) Trans Tech Publications.
date: 2014
publisher: Trans Tech Publications Ltd
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84891818051&doi=10.4028%2fwww.scientific.net%2fJNanoR.26.117&partnerID=40&md5=76ee5e943167d46417e5dfa32729a1a9
id_number: 10.4028/www.scientific.net/JNanoR.26.117
full_text_status: none
publication: Journal of Nano Research
volume: 26
pagerange: 117-122
refereed: TRUE
issn: 16625250
citation:   Soleimani, H. and Yahya, N. and Latiff, N.R.A. and Koziol, K. and Maciejewska, B.M. and Guan, B.H.  (2014) Synthesis and characterization of mesoporous multi-walled carbon nanotubes at low frequencies electromagnetic waves.  Journal of Nano Research, 26.  pp. 117-122.  ISSN 16625250