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首页> 外文期刊>Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems >Thermal decomposition synthesis of nanorods bismuth sulphide from bismuth N-ethyl cyclohexyl dithiocarbamate complex
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Thermal decomposition synthesis of nanorods bismuth sulphide from bismuth N-ethyl cyclohexyl dithiocarbamate complex

机译:N-乙基环己基二硫代氨基甲酸铋配合物热分解合成纳米棒硫化铋

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摘要

Nanorods of bismuth sulphide were prepared by thermal decomposition of bismuth N-ethyl cyclohexyl dithiocarbamate at different calcination duration. X-ray diffraction (XRD) analysis shows that at 400 degrees C, the precursor was fully decomposed to orthorhombic bismuth sulphide after 2 h of calcination. Besides, calcination duration does not affect the existence of Bi2S3 phase. Field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) analyses reveal that Bi2S3 nanorods with an average width ranging from 29-36nm were obtained. Energy dispersive X-ray (EDX) analysis confirmed the atomic ratio of Bi and S close to 2:3, giving a possible composition of Bi2S3. Direct band gap energy of Bi2S3 decreases from 1.83 eV to 1.54 eV as calcination time increases. (C) 2016 Published by Elsevier B.V.
机译:通过在不同的煅烧时间下热分解N-乙基环己基二硫代氨基甲酸铋来制备硫化铋的纳米棒。 X射线衍射(XRD)分析表明,在煅烧2小时后,前体在400摄氏度下完全分解为正交晶的硫化铋。此外,煅烧时间不影响Bi 2 S 3相的存在。场发射扫描电子显微镜(FESEM)和透射电子显微镜(TEM)分析表明,获得的Bi2S3纳米棒的平均宽度为29-36nm。能量色散X射线(EDX)分析证实Bi和S的原子比接近2:3,从而可能形成Bi2S3。随着煅烧时间的增加,Bi2S3的直接带隙能从1.83 eV降低到1.54 eV。 (C)2016由Elsevier B.V.发布

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