X-ray absorption spectroscopy characterization of iron-oxide nanoparticles synthesized by high temperature plasma processing

TL;DR

This study uses X-ray absorption spectroscopy to analyze how high temperature plasma processing affects the structure and morphology of iron-oxide nanoparticles, revealing the relationship between plasma conditions and nanoparticle properties.

Contribution

It provides new insights into controlling the structural and morphological properties of iron-oxide nanoparticles synthesized via high temperature plasma methods.

Findings

Higher plasma currents lead to increased local disorder in nanoparticles.

Nanoparticles grown at higher plasma currents have larger average sizes.

Local atomic structure varies significantly with plasma processing conditions.

Abstract

Iron-oxide nanoparticles have been synthesized by high temperature arc plasma route with different plasma currents and characterized for their structure, morphology and local atomic order. Fe K-edge x-ray absorption spectra reveal distinct local structure of the samples grown with different plasma currents. We have shown that the local disorder is higher for the higher plasma current grown samples that also have a larger average particle-size. The results provide useful information to control structural and morphological properties of nanoparticles grown by high temperature plasma synthesis process.