Functionalization of gold-coated carbon nanotubes with self-assembled monolayers of thiolates |
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Authors: | Michał Cegłowski Urszula Narkiewicz Iwona Pełech Grzegorz Schroeder |
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Affiliation: | (1) Faculty of Chemistry, Adam Mickiewicz University, Grunwaldzka 6, 60-780 Poznan, Poland;(2) Institute of Chemical and Environment Engineering, West Pomeranian University of Technology, 70-310 Szczecin, Poland |
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Abstract: | Multi-walled carbon nanotubes (CNT) were synthesized by chemical vapor deposition using Co–Fe as a catalyst and ethylene as a carbon source. Afterward, a simple method combining wet-chemistry and chemical reduction was used to prepare carbon nanotube/gold material (CNT/Au). Pristine nanotubes and CNT/Au were characterized by transmission electron microscopy micrographs. It appeared that gold formed nanoparticles on CNTs endings and their sidewalls. Further functionalization was carried out by using thiols of different chemical properties and molecule sizes. Thiols formed self-assembled monolayer on gold surface that led to formation of CNT/gold/thiol-functionalized material. The amounts of chemisorbed thiols were measured by elemental analysis and thermogravimetry. |
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