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Green chemistry preparation of superparamagnetic nanoparticles containing Fe3O4 cores in biochar

TitleGreen chemistry preparation of superparamagnetic nanoparticles containing Fe3O4 cores in biochar
Publication TypeJournal Article
Year of Publication2015
AuthorsKhan, M. Y., Mangrich A. S., Schultz J., Grasel F. S., Mattoso N., and Mosca D. H.
JournalJournal of Analytical and Applied Pyrolysis
Volume116
Pagination42 - 48
Date Published11/2015
ISSN01652370
Abstract

Nanotechnology is an engineering science in which the aim is to develop novel procedures and structures at the nanoscale that might offer solutions to many current problems. In this article, we describe the synthesis of superparamagnetic iron oxide (Fe3O4) nanoparticles in biochar obtained from the condensed tannin extract of Acacia mearnsii, using a single-step process that is compliant with the principles of green chemistry. Characterization of this material (acronym: SPMIOBNs) was performed using Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, and X-ray diffraction analysis. The porous particles produced contained iron oxide nanoparticles with average sizes in the range 20–35 nm. The magnetic properties revealed that the SPMIOBNPs were superparamagnetic, with a saturation magnetization of 3.2 memu/g at 300 K.

URLhttp://www.sciencedirect.com/science/article/pii/S0165237015302515
DOI10.1016/j.jaap.2015.10.008
Short TitleJournal of Analytical and Applied Pyrolysis