Kiruna-Type Ore as a Novel Precursor for Large-Scale Production of Small Uniform Iron Oxide Nanoparticles

Author(s)
Majid Mostaghelchi, Jani Kotakoski, Christian Rentenberger, Christian L. Lengauer
Abstract

The wide range of actual and potential applications of nanoparticles, highlight the necessity of a reliable production method for both quality and quantity of the products. Mechanical attrition is one of the first well-known techniques used to produce nanoparticles. However, these approaches have been restricted to produce uniform particles below the critical size of 15 nm because of the attrition balance limit. This paper introduces the magnetite silicate raw material of a Kiruna-type ore deposit as a novel precursor, which enables the production of small iron oxide nanoparticles below the critical size by mechanical attrition. X-ray fluorescence (XRF), powder X-ray diffractometry (pXRD), dynamic light scattering (DLS) and transmission electron microscopy (TEM) were used for characterization of the precursor and obtained nanoparticles. The results indicate that the particles with a mean diameter of 10.7(2.7) nm consist of mainly less than one crystallite. The significant size reduction below the attrition balance limit can be attributed to the quartz content of the raw material, which operated as supporting micro-balls for transferring the energy during the milling process.

Organisation(s)
Department of Mineralogy and Crystallography, Physics of Nanostructured Materials
Journal
Journal of Nanoscience and Nanotechnology
Volume
20
Pages
6525-6531
No. of pages
7
ISSN
1533-4880
DOI
https://doi.org/10.1166/jnn.2020.18438
Publication date
10-2020
Peer reviewed
Yes
Austrian Fields of Science 2012
103018 Materials physics, 210004 Nanomaterials
Keywords
Portal url
https://ucris.univie.ac.at/portal/en/publications/kirunatype-ore-as-a-novel-precursor-for-largescale-production-of-small-uniform-iron-oxide-nanoparticles(4214c822-68c7-4f0c-99ea-5604d301a8c6).html