Issue 21, 2016

The preparation, characterization and application of COOH grafting on ferrite–silica nanoparticles

Abstract

Magnetic materials grafted with carboxylic acid (Fe3O4@SiO2@COOH MNPs) were successfully prepared via the incorporation of maleic anhydride as a functional group on the surface of ferrite–silica nanoparticles. The properties of the magnetite nanoparticles prepared were characterized using transmission electron microscopy (TEM), FT-infrared spectroscopy (FT-IR), vibrating sample magnetometer (VSM), and X-ray diffraction (XRD) analysis. The prepared magnetic catalyst (Fe3O4@SiO2@COOH) showed a high catalytic activity for the synthesis of diindolyl oxindoles via the coupling of indole and isatin compounds. The products were produced with good to high yield in an aqueous medium. The catalyst could be readily separated from the reaction mixture using a permanent magnet and showed high stability in recycling experiments.

Graphical abstract: The preparation, characterization and application of COOH grafting on ferrite–silica nanoparticles

Article information

Article type
Paper
Submitted
16 Nov 2015
Accepted
06 Jan 2016
First published
08 Jan 2016

RSC Adv., 2016,6, 17560-17566

The preparation, characterization and application of COOH grafting on ferrite–silica nanoparticles

H. Hassani, B. Zakerinasab, M. A. Nasseri and M. Shavakandi, RSC Adv., 2016, 6, 17560 DOI: 10.1039/C5RA24252E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements