Functionalization of Liquid-Exfoliated Two-Dimensional 2H-MoS2
Functionalization of Liquid-Exfoliated Two-Dimensional 2H-MoS2
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DOI：
10.1002/anie.201409412
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发表时间：
2015-02-23
影响因子：
16.6
通讯作者：
McDonald, Aidan R.
中科院分区：
文献类型：
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作者：
Backes, Claudia;Berner, Nina C.;McDonald, Aidan R.
层状二维（2D）无机过渡金属二硫化物（TMD）因其在光电子学、催化和医学方面的潜在应用而引起了人们的极大兴趣。然而，功能化和处理此类 2D TMD 的方法仍然很少。我们已经建立了一条通往功能化层状 MoS2 的简便途径。我们发现液体剥离的2DMoS(2)与M(OAc)(2)盐(M=Ni、Cu、Zn；OAc=乙酸盐)的反应产生了功能化的MoS2-M(OAc)(2)材料。重要的是，该方法提供了半导体 MoS2 的 2H 多型体。 X射线光电子能谱（XPS）、漫反射红外傅里叶变换光谱（DRIFT-IR）和热重分析（TGA）为MoS2表面硫原子与M(OAc)(2)盐的配位提供了有力的证据。有趣的是，2H-MoS2 的功能化允许其在更传统的实验室溶剂中分散/加工。
Layered two-dimensional (2D) inorganic transition-metal dichalchogenides (TMDs) have attracted great interest as a result of their potential application in optoelectronics, catalysis, and medicine. However, methods to functionalize and process such 2D TMDs remain scarce. We have established a facile route towards functionalized layered MoS2. We found that the reaction of liquid-exfoliated 2DMoS(2), with M(OAc)(2) salts (M=Ni, Cu, Zn; OAc=acetate) yielded functionalized MoS2-M(OAc)(2) materials. Importantly, this method furnished the 2H-polytype of MoS2 which is a semiconductor. X-ray photoelectron spectroscopy (XPS), diffuse reflectance infrared Fourier transform spectroscopy (DRIFT-IR), and thermogravimetric analysis (TGA) provide strong evidence for the coordination of MoS2 surface sulfur atoms to the M(OAc)(2) salt. Interestingly, functionalization of 2H-MoS2 allows for its dispersion/processing in more conventional laboratory solvents.