Galvanic synthesis of copper selenides Cu2 − xSe and CuSe in alkaline sodium selenosulfate aqueous solution
Galvanic synthesis of copper selenides Cu2 − xSe and CuSe in alkaline sodium selenosulfate aqueous solution
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DOI：
10.1007/s10008-008-0585-4
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发表时间：
2009-03
影响因子：
2.5
通讯作者：
Y. Yang;Shengshui Hu
中科院分区：
文献类型：
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作者：
Y. Yang;Shengshui Hu
通过硒代硫酸钠与金属铜在碱性Na2SeSO3水溶液中于室温下的简单反应制备了球形硒化铜纳米粒子（NPs）。这是一种电化学过程，结合阳极铜氧化和硒硫酸盐还原进行操作。发现 1-硫代甘油可催化该反应。以金和石墨为正极，分别制备了非化学计量硒化铜（Cu2 −xSe）和化学计量硒化铜（CuSe）纳米晶。 XRD研究表明，生成的CuSe和Cu2 −xSe分别为纯六方相和克劳斯铁矿相。透射电子显微镜图像显示，所产生的 CuSe 和 Cu2 −xSe 纳米颗粒的直径分别在 10∼20 和 5∼15 nm 范围内。
Spherical copper selenide nanoparticles (NPs) were prepared by a simple reaction of sodium selenosulfate with metal copper at room temperature in alkaline Na2SeSO3aqueous solution. It is a galvanic process that operates on a coupled anodic copper oxidation and selenosulfate reduction. 1-Thioglycerol is found to catalyze this reaction. With gold and graphite as the positive electrodes, nanocrystallites of nonstoichiometric copper selenide (Cu2 −xSe) and stoichiometric copper selenides (CuSe) were produced, respectively. The XRD study shows that the produced CuSe and Cu2 −xSe are in the pure hexagonal phase and clausthalite phase, respectively. Transmission electron microscopy images show that the diameters of the produced CuSe and Cu2 −xSe NPs are in the range of 10∼20 and 5∼15 nm, respectively.