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Journal of Nanoparticle Research

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01-12-2012 | Research Paper

CuO/Ta₂O₅ core/shell nanoparticles synthesized in immersed arc-discharge: production conditions and dielectric response

Authors: P. K. Karahaliou, P. Svarnas, S. N. Georga, N. I. Xanthopoulos, D. Delaportas, C. A. Krontiras, I. Alexandrou

Published in: Journal of Nanoparticle Research | Issue 12/2012

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Abstract

We reported recently on a novel nanostructured material produced by the arc-discharge in water method, and extended studies were realized to identify the nature of this material, i.e., CuO/Ta₂O₅ core/shell crystalline nanoparticles (NPs). As a continuation of this investigation on the possibility of complex NP synthesis using immersed arc-discharge, the production conditions of the CuO/Ta₂O₅ NPs are herein presented in detail and the electrical properties of the nanopowder are examined comprehensively. The discharge is thus probed in situ by electrical measurements, optical emission spectroscopy and high speed imaging, and the electrical behavior of the NPs is considered by means of broadband dielectric spectroscopy. This combined study provides an integrated characterization of this new material, unveils its potential applications, and makes available suggestions on the process control.

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Title: CuO/Ta2O5 core/shell nanoparticles synthesized in immersed arc-discharge: production conditions and dielectric response
Authors: P. K. Karahaliou
P. Svarnas
S. N. Georga
N. I. Xanthopoulos
D. Delaportas
C. A. Krontiras
I. Alexandrou
Publication date: 01-12-2012
Publisher: Springer Netherlands
Published in: Journal of Nanoparticle Research / Issue 12/2012
Print ISSN: 1388-0764
Electronic ISSN: 1572-896X
DOI: https://doi.org/10.1007/s11051-012-1297-3

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