水热合成层次化二硫化钼及其薄膜的制备

IF 1.8 3区 化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR
T. L. Simonenko, N. P. Simonenko, A. A. Zemlyanukhin, Ph. Yu. Gorobtsov, E. P. Simonenko
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引用次数: 0

摘要

研究了水热合成参数对二硫化钼晶体结构和形貌的影响。同步热分析结果表明,在钼离子浓度为0.05 mol/L时,水热处理时间的增加导致总质量损失(Δm)减小,相反,c(Mo)的增加导致总质量损失(Δm)值显著增大。确定了与MoS2氧化生成MoO3有关的外显效应最大位置与合成条件的依赖关系。根据x射线粉末衍射数据,在最小c(Mo)和最小热处理时间下形成1T-MoS2相。随着时间的增加,1t相转变为2H-MoS2。随着c(Mo)的增加,2h相转变为1T- mos2,并进一步转变为1T/2H-MoS2。用拉曼光谱分析了二硫化钼的结构转变。扫描电镜(SEM)结果表明,所有样品都是由扭曲的纳米片组成的花状纳米结构。透射电镜数据显示,在二硫化钼结构分层后,形成了长度为50-500 nm的单个纳米片。利用扫描电镜和原子力显微镜对制备的二硫化钼薄膜的微观结构进行了研究。利用开尔文探针力显微镜对薄膜表面进行分析,可以确定该材料具有较高的导电性,并计算了薄膜表面的功函数值。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Hydrothermal Synthesis of Hierarchically Organized MoS2 and Formation of Films Based on It

Hydrothermal Synthesis of Hierarchically Organized MoS2 and Formation of Films Based on It

The effect of hydrothermal synthesis parameters on the crystal structure and morphology of MoS2 particles has been shown. The results of synchronous thermal analysis showed that at the concentration of molybdenum cations of 0.05 mol/L, the increase in the duration of hydrothermal treatment leads to a decrease in the total mass loss (Δm), and the increase in c(Mo), on the contrary, results in a significant increase in the total Δm value. The dependence of the exo-effect maximum position, related to the MoS2 oxidation with the formation of MoO3, on the synthesis conditions has been determined. According to X-ray powder diffraction data, the 1T-MoS2 phase is formed at minimum c(Mo) and duration of heat treatment. Increasing the time duration leads to the transformation of 1T-phase into 2H-MoS2. With increasing c(Mo), the 2H-phase transforms to 1T-MoS2 and further to 1T/2H-MoS2. The transformation of MoS2 structure has been also analyzed by Raman spectroscopy. According to the results of scanning electron microscopy (SEM), all samples represent flower-like nanostructures consisting of twisted nanosheets. According to transmission electron microscopy data, individual nanosheets with a length of 50–500 nm are formed after delamination of molybdenum disulfide structures. The microstructure of the obtained MoS2 film has been studied by SEM and atomic force microscopy. Analysis of the film surface by Kelvin-probe force microscopy allows one to establish that the material has high electrical conductivity, and the work function value of the film surface has been calculated.

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来源期刊
Russian Journal of Inorganic Chemistry
Russian Journal of Inorganic Chemistry 化学-无机化学与核化学
CiteScore
3.10
自引率
38.10%
发文量
237
审稿时长
3 months
期刊介绍: Russian Journal of Inorganic Chemistry is a monthly periodical that covers the following topics of research: the synthesis and properties of inorganic compounds, coordination compounds, physicochemical analysis of inorganic systems, theoretical inorganic chemistry, physical methods of investigation, chemistry of solutions, inorganic materials, and nanomaterials.
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