Physics – Condensed Matter – Materials Science
Scientific paper
2007-08-14
Dans European Nano Systems Worshop - ENS 2005, Paris : France (2005)
Physics
Condensed Matter
Materials Science
Submitted on behalf of TIMA Editions (http://irevues.inist.fr/tima-editions)
Scientific paper
Carbon nanotubes (CNTs) have attracted increasing attention because of their unique structural, mechanical, and electronic properties. Surface chemistry modifications are also useful and critical to manipulate the adsorptive properties of CNTs and develop their potential of environmental application. Therefore, the main objectives of this study were to investigate the optimal synthesis methods or characteristics identification of multiwall CNTs (MWCNTs) and the environmental application of lead ions adsorptive removal by CNTs. Experimentally, the MWCNTs of well-graphited walls were obtained with reductive potassium metals of catalytic hexachlorobenzene-thermal routes in the presence of Co/Ni catalyst precursors at 503-623 K for 8- 12 hr. The diameters of MWCNTs ranged of 30-100 nm by TEM microphotos. In addition, fine structures or surface chemical modification of MWCNTs or Co/Ni precursors were further identified by EDS, XRPD, X-ray absorption near edge structural (XANES) or extended Xray absorption fine structural (EXAFS) spectroscopy. 1.
Chiu Su-Wei
Lee Frank
Li Ruey-Bing
Lin K.-S.
Lou Li-Cheng
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