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首页> 外文期刊>Science in China. Series G, Physics & Astronomy >Solvothermal synthesis of nanocrystalline FeS_2
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Solvothermal synthesis of nanocrystalline FeS_2

机译:溶剂热合成纳米晶FeS_2

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摘要

This paper reports on the synthesis of the nanocrystalline FeS_2 via a solvent-thermal process. Using FeSO_4 and NH_2CSNH_2 as precursors and polyvinyl-pyrrolidone (PVP) as a protective agent (dispersant), we have successfully synthesized nanocrystalline FeS_2 both under acidic conditions (pH = 5) and under alkali conditions (pH = 10) at various temperatures and for different time in alcohol-water solution. X-ray diffraction (XRD), Transmission electron microscopy (TEM) and Ultraviolet Visible (UV-VIS) spectroscopy were used to characterize the morphology, structure, particle size and optical characterization of sample synthesized under acidic condition, and the XRD pattern was refined by Rietveld method. The experimental result shows that nanocrystalline FeS_2 with uniform size, highly crystallized quality and excellent dispersivity has been synthesized at 200℃for 36 h.
机译:本文报道了通过溶剂-热法合成纳米晶态FeS_2。使用FeSO_4和NH_2CSNH_2作为前体,并使用聚乙烯吡咯烷酮(PVP)作为保护剂(分散剂),我们已经成功地在酸性条件下(pH = 5)和碱性条件下(pH = 10)在不同温度下合成了纳米晶FeS_2。在酒精水溶液中的时间不同。利用X射线衍射(XRD),透射电子显微镜(TEM)和紫外可见光谱(UV-VIS)表征了在酸性条件下合成的样品的形貌,结构,粒径和光学特性,并完善了XRD图谱。通过Rietveld方法。实验结果表明,在200℃,36 h条件下合成了尺寸均匀,结晶质量高,分散性好的纳米晶FeS_2。

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