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首页> 外文期刊>Crystal growth & design >Formation of Various Morphologies of Covellite Copper Sulfide Submicron Crystals by a Hydrothermal Method without Surfactant
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Formation of Various Morphologies of Covellite Copper Sulfide Submicron Crystals by a Hydrothermal Method without Surfactant

机译:不用表面活性剂的水热法形成金刚砂硫化铜亚微米晶体的各种形貌

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摘要

Covellite copper sulfide submicron crystals in the shapes of ball-like,rodlike,and chrysanthemum-like architectures congregated from nanoslices with thickness of 20 to 100 nm have been prepared by a hydrothermal method without using any surfactant and characterized by X-ray diffraction,energy-dispersive X-ray spectrometer(EDX),UV-vis optical absorption spectra,and electron-microscopy techniques.A systematic investigation has been carried out to understand the factors influencing the evolution of the crystal morphology which was found to be predominant by the reactant molar ratio(Tu:Cu(NO3)2,Tu-thiourea),the hydrothermal reaction time,and the temperature.Possible crystal growth processes are also discussed.
机译:通过水热法不使用任何表面活性剂就制备了厚度为20至100 nm的球形,棒状和菊花状结构的球形,棒状和菊花状的Covellite硫化铜亚微米晶体,并通过X射线衍射,能量表征色散X射线光谱仪(EDX),紫外可见光吸收光谱和电子显微镜技术。进行了系统的研究,以了解影响反应物的主要因素是影响晶体形态演变的因素。摩尔比(Tu:Cu(NO3)2,Tu-硫脲),水热反应时间和温度。还讨论了可能的晶体生长过程。

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