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Issue 14, 2013
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Direct preparation of semiconductor iron sulfidenanocrystals from natural pyrite

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Stable and monodisperse colloidal iron sulfide nanocrystal (FSNC) (<100 nm) inks were prepared directly from natural pyrite dust without any chemical conversion. After selective modification by octadecylxanthate, sedimentation behaviors of FSNCs were reversibly regulated in different mixed organic solvents. In this way, FSNCs were efficiently separated out of pyrite dust, and stable FSNC inks were then prepared. The inks were applied in drop coating semiconductor FSNC films, of which the structure and semiconductor properties were comparable with the film prepared by classical vulcanization. The FSNCs film could be further regulated simply by heating in N2 and S vapors and exhibited obvious photoconductive properties. Different from traditional synthesis processes, no chemical conversions occurred during the process from the natural pyrite to the FSNCs. Therefore, reagents and energy consumption could be largely reduced. It provides a simple yet greener way for preparing nano-sulfide semiconductors from widely existing natural sulfide ores.

Graphical abstract: Direct preparation of semiconductor iron sulfide nanocrystals from natural pyrite

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Supplementary files

Article information

04 Jan 2013
06 Feb 2013
First published
08 Feb 2013

RSC Adv., 2013,3, 4539-4543
Article type

Direct preparation of semiconductor iron sulfide nanocrystals from natural pyrite

L. Ding, X. Fan, X. Sun, J. Du, Z. Liu and C. Tao, RSC Adv., 2013, 3, 4539
DOI: 10.1039/C3RA00035D

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