Authors | حسین نعیمی,سمانه محمدآبادی |
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Journal | DALTON T |
Page number | 12967 |
Volume number | 43 |
IF | 4.197 |
Paper Type | Full Paper |
Published At | 2014-07-11 |
Journal Grade | Scientific - research |
Journal Type | Electronic |
Journal Country | Iran, Islamic Republic Of |
Journal Index | ISI ,SCOPUS |
Abstract
Regarding green chemistry goals, silica-coated magnetite nanoparticles open up a new avenue to introduce a very useful and efficient system for facilitating catalyst recovery in different organic reactions. Therefore, in this paper the preparation of sulfonic acid-functionalized silica-coated magnetic nanoparticles with core–shell structure (Fe3O4@silica sulfonic acid) is presented by using Fe3O4 spheres as the core and silica sulfonic acid nanoparticles as the shell. The catalyst was characterized by infrared spectroscopy, scanning electron microscopy, X-ray diffraction analysis, dynamic light scattering, thermogravimetric analysis and vibrating sample magnetometry. Nanocatalyst can be recovered using an external magnet and reused for subsequent reactions 6 times without noticeable deterioration in catalytic activity.
tags: silica-coated magnetic nanoparticles, catalyst, 1-substituted 1H-tetrazoles