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Magnetic Iron Sulfide Nanoparticles for Potential Applications in GasSensing

Published online by Cambridge University Press:  11 January 2016

Sixberth Mlowe,
Shivram Sopan Garje,
Thomas Moyo and
Neerish Revaprasadu
Sixberth Mlowe*
Affiliation:
Department of Chemistry, University of Zululand, Private Bag X1001, KwaDlangezwa, 3886, South Africa. E-mail: RevaprasaduN@unizulu.ac.za
Shivram Sopan Garje
Affiliation:
Department of Chemistry, University of Mumbai Vidyanagari, Santacruz (E), Mumbai 400 098, India.
Thomas Moyo
Affiliation:
School of Chemistry and Physics, Westville Campus, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa.
Neerish Revaprasadu
Affiliation:
Department of Chemistry, University of Zululand, Private Bag X1001, KwaDlangezwa, 3886, South Africa. E-mail: RevaprasaduN@unizulu.ac.za
*
*(Email: sam.nanochem@gmail.com)
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Abstract

The crystal structure and phase transformations of iron sulfide nanomaterialshave interesting properties that can be utilized in solar cells, biological andother applications. Iron (III) complexes piperidine (1) andtetrahydroquinoline (2) dithiocarbamate have been synthesized andsubsequently utilized as single source precursors for the preparation of ironsulfide nanoparticles by solvothermal and pyrolysis methods. The powder X-raydiffraction (p-XRD) studies gave crystalline information of the iron sulfidenanoparticles which were dependent on the reaction conditions. Only the greigitephase (Fe3S4) was obtained when the solvothermal methodwas used during the synthesis. The pyrolysis method gave a mixture of pyrite(FeS2) and pyrrhotite phases when complex (1) wasused while complex (2) gave pure pyrrhotite. Well interconnectedmicrostructures and nanoflakes-like structures were obtained by scanningelectron microscopy imaging. Furthermore, magnetic properties of theas-synthesized nanoparticles displayed ferromagnetic and antiferromagneticbehaviour, typical of greigite and pyrrhotite nanoparticles respectively. Adirect band gap of 2.70 eV was obtained according to optical absorptionstudies.

Keywords

ferromagneticphase transformationx-ray diffraction (XRD)

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Type
Articles
Information
MRS Advances , Volume 1 , Issue 3: Nanomaterials and Synthesis , 2016, pp. 235 - 240
Copyright
Copyright © Materials Research Society 2016 

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References

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