Hydrothermal Synthesis of Nanocrystal FeS2 by the Seed-Induced Method

Abstract

Abstract: FeS₂(Pyrite) nanocrystals were synthesized successfully by the hydrothermal reaction using FeS₂
crystalline seed with EDTA and tartaric acid as complex additives to optimize the preparation condition. The properties of the particles were
investigated by X-ray diffraction, transmission electron microscopy and scanning electron microscopy. The results show that the product is
single-phase pyrite with an ellipse-like shape and the average particle size of about 20nm. In the ultraviolet-visible range, pyrite shows a strong
absorptivity between 215--314nm and the direct band gap takes place blue shift. The mechanism of formation of FeS₂ nanocrystal was discussed
in terms of the growth process.

Key words: FeS₂ nanocrystal, hydrothermal, crystalline-induced, direct band gap

CLC Number:

TN304

WU Rong,ZHENG Yu-Feng,ZHANG Xiao-Gang,SUN Yan-Fei,XU Jin-Bao. Hydrothermal Synthesis of Nanocrystal FeS₂ by the Seed-Induced Method[J]. Journal of Inorganic Materials.

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Hydrothermal Synthesis of Nanocrystal FeS₂ by the Seed-Induced Method

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