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The synergy of ultrasonic treatment and organic modifiers for tuning the surface chemistry and conductivity of multiwalled carbon nanotubes

SYSNO ASEP	0433163
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	The synergy of ultrasonic treatment and organic modifiers for tuning the surface chemistry and conductivity of multiwalled carbon nanotubes
Author(s)	Omastová, M. (SK) Mičušík, M. (SK) Fedorko, P. (SK) Pionteck, J. (DE) Kovářová, Jana (UMCH-V)_RID Chehimi, M. M. (FR)
Source Title	Surface and Interface Analysis. - : Wiley - ISSN 0142-2421 Roč. 46, 10-11 (2014), s. 940-944
Number of pages	5 s.
Action	European Conference on Applications of Surface and Interface Analysis /15./ - ECASIA 2013
Event date	13.10.2013-18.10.2013
VEvent location	Cagliari
Country	IT - Italy
Event type	WRD
Language	eng - English
Country	GB - United Kingdom
Keywords	carbon nanotubes ; surface modification ; surfactant
Subject RIV	CD - Macromolecular Chemistry
Institutional support	UMCH-V - RVO:61389013
UT WOS	000344987400059
EID SCOPUS	84908177341
DOI	10.1002/sia.5427
Annotation	Multiwalled carbon nanotubes (CNT) were modified via the non-covalent approach using anodic surfactants dodecylbenzenesulfonic acid (DBSA) and poly(ethylene glycol) n-alkyl 3-sulfopropyl ether potassium salt and cationic surfactant cetyltrimethylammonium bromide (CTAB). These surfactants were used individually or as DBSA/CTAB mixtures. Surface modification was ultrasonically-assisted with a control over sonication power (64 or 360 W). The surface properties of modified CNT particles were determined by X-ray photoelectron spectroscopy and scanning electron microscopy. The electrical conductivities of unmodified CNT, particles treated by ultrasound, and CNT modified with surfactants were measured. Thermogravimetric analysis was used to determine the mass loading of surfactants after drying. The highest increase in conductivity was reached when CNT were treated solely with the anionic surfactant DBSA under the influence of soft ultrasound. This work shows conclusively that ultrasound-assisted modification of CNT by surfactants is a simple and efficient approach to prepare surface modified and highly conductive CNT, provided that physical (ultrasonic) and chemical (surfactants) treatments are concomitantly controlled.
Workplace	Institute of Macromolecular Chemistry
Contact	Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358
Year of Publishing	2015

Number of the records: 1