Synthesis,characterization and alcohol oxidation properties of multi-wall carbon nanotubes functionalized with a cobalt(II) Schiff base complex |
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| Authors: | Masoud Salavati-Niasari Mehdi Bazarganipour |
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| Institution: | (1) Institute of Nano Science and Nano Technology, University of Kashan, P.O. Box 87317–51167, Kashan, Isfahan, Iran;(2) Department of Chemistry, Faculty of Science, University of Kashan, P.O. Box 87317–51167, Kashan, Isfahan, Iran |
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| Abstract: | A hydroxyl functionalized cobalt(II) Schiff base complex has been covalently anchored to modified multi wall carbon nanotubes
(MWNTs). The modified MWNTs have been characterized by physico-chemical and spectroscopic methods. The results suggest that
the symmetrical Schiff base, N,N′-bis(4-hydroxysalicylidene)-ethylene-1,2-diamine; H2((OH)2-salen)] acts as a tetradentate N2O2 donor via the deprotonated phenolic oxygens and azomethine nitrogens. The functionalized Co((OH)2-salen)]–MWNTs catalyze the oxidation of aliphatic and aromatic alcohols into the corresponding carboxylic acids and ketones
in the presence of 30% H2O2 in good yields. The system is truly heterogeneous (no leaching observed) and reusable (no decrease in activity over three
consecutive runs). |
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