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The synergy of ultrasonic treatment and organic modifiers for tuning the surface chemistry and conductivity of multiwalled carbon nanotubes
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SYSNO ASEP 0433163 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název The synergy of ultrasonic treatment and organic modifiers for tuning the surface chemistry and conductivity of multiwalled carbon nanotubes Tvůrce(i) Omastová, M. (SK)
Mičušík, M. (SK)
Fedorko, P. (SK)
Pionteck, J. (DE)
Kovářová, Jana (UMCH-V) RID
Chehimi, M. M. (FR)Zdroj.dok. Surface and Interface Analysis. - : Wiley - ISSN 0142-2421
Roč. 46, 10-11 (2014), s. 940-944Poč.str. 5 s. Akce European Conference on Applications of Surface and Interface Analysis /15./ - ECASIA 2013 Datum konání 13.10.2013-18.10.2013 Místo konání Cagliari Země IT - Itálie Typ akce WRD Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova carbon nanotubes ; surface modification ; surfactant Vědní obor RIV CD - Makromolekulární chemie Institucionální podpora UMCH-V - RVO:61389013 UT WOS 000344987400059 EID SCOPUS 84908177341 DOI 10.1002/sia.5427 Anotace 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. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2015
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