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Synthesis and characterization of micron-size pyrite crystals

Published online by Cambridge University Press:  06 March 2012

Rong Wu ,
Ji-kang Jian ,
Le-tian Tao ,
Yan-long Bian ,
Jin Li ,
Yan-fei Sun ,
Jun Wang  and
Xing-Yan Zeng
Rong Wu*
Affiliation:
Department of Physical Science and Technology, XinJiang University, Urumqi, Xinjiang 830046, China and Central for Material Research, XinJiang University, Urumqi, Xinjiang 830046, China
Ji-kang Jian
Affiliation:
Department of Physical Science and Technology, XinJiang University, Urumqi, Xinjiang 830046, China and Central for Material Research, XinJiang University, Urumqi, Xinjiang 830046, China
Le-tian Tao
Affiliation:
Department of Physical Science and Technology, XinJiang University, Urumqi, Xinjiang 830046, China
Yan-long Bian
Affiliation:
Department of Physical Science and Technology, XinJiang University, Urumqi, Xinjiang 830046, China
Jin Li
Affiliation:
Department of Physical Science and Technology, XinJiang University, Urumqi, Xinjiang 830046, China and Central for Material Research, XinJiang University, Urumqi, Xinjiang 830046, China
Yan-fei Sun
Affiliation:
Department of Physical Science and Technology, XinJiang University, Urumqi, Xinjiang 830046, China and Central for Material Research, XinJiang University, Urumqi, Xinjiang 830046, China
Jun Wang
Affiliation:
Department of Physical Science and Technology, XinJiang University, Urumqi, Xinjiang 830046, China
Xing-Yan Zeng
Affiliation:
Department of Physical Science and Technology, XinJiang University, Urumqi, Xinjiang 830046, China
*
a)Author to whom correspondence should be address. Electronic mail address: rongwu1022@163.com
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Abstract

Mixed solvent of ethanol and water using FeSO4⋅7H2O and (NH2)2CS as precursors with polyvinylpyrrolidone as surfactant was used to synthesize cubic FeS2 (pyrite) crystals. Crystalline phase and surface morphologies of the crystals were characterized by X-ray diffraction and scanning electron microscopy, respectively. Volume ratio of solvent, reaction temperature, reaction time, and sulfur source were found to be the key parameters for the formation of pure pyrite crystals. Optimal micron-size pyrite crystals were successfully grown from a mixed solvent of ethanol and water with a volume ratio of 3:2, heated to a reaction temperature of 180 °C, and maintained for 36 h with thiourea as the sulfur source.

Keywords

pyriteFeS2solvothermal methodXRDSEM
Type
Technical Articles
Information
Powder Diffraction , Volume 25 , Supplement S1 , September 2010 , pp. S40 - S44
Copyright
Copyright © Cambridge University Press 2010

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