Nanoferrites as Catalysts and Fillers for Polyaniline/Nanoparticle Composites Preparation

Authors

  • E. Falletta Dipartimento di Chimica, Università degli Studi di Milano
  • A. Ponti Laboratorio di Nanotecnologie, Istituto di Scienze e Tecnologie Molecolari
  • A. Sironi Dipartimento di Chimica, Università degli Studi di Milano, CNR-ISTM
  • A. M. Ferretti Laboratorio di Nanotecnologie, Istituto di Scienze e Tecnologie Molecolari, Consiglio Nazionale delle Ricerche,
  • C. Della Pina Dipartimento di Chimica, Università degli Studi di Milano, CNR-ISTM

Keywords:

Catalysis, Composites, Ferrites, Nanoparticles, Polyaniline

Abstract

In this paper, we report on the catalytic activity of MFe2O4 nanoparticles (M = Mn, Ni, Cu, Zn, Mg) in the oxidative polymerization of N-(4-aminophenyl)aniline yielding polyaniline/nanoparticle composites. Hydrogen peroxide is used as the oxidizing agent and ferrite nanoparticles play the dual role of reaction catalysts and fillers. The obtained polyaniline/MFe2O4 composites maintained the pristine size of the ferrite crystallites and showed a modest conductive behavior. Polyaniline/MFe2O4 (M = Mn, Ni) composites displayed good dispersion of the nanoparticles in the polyaniline matrix and magnetic hardness intermediate between those of soft M = Fe and hard M = Co composites, evidencing the tunability of the magnetic properties.

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Published

2015-09-30

Issue

Vol. 2 No. 2 (2015)

Section

Articles

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