2H-MoS2定向调控生成1T-MoS2及应用

Directional Control to Synthesize 1T-MoS2 from 2H-MoS2 and the Application

摘要:

MoS2因其独特的二维“三明治”层状结构在电学、能源和催化等行业备受关注。由于S、Mo原子配位模式的不同，MoS2主要以1T和2H相两种形式存在。通常，1T-MoS2拥有更大的层间距和更多的催化活性位点，在许多领域都表现出了比2H-MoS2更优异的性能。通过控制2H-MoS2 中S平面的横向位移和Mo 的3d轨道电子填充状态，可以定向调控2H-MoS2生成1T-MoS2。鉴于此，综述了2H-MoS2定向调控制备1T-MoS2的研究进展，并对影响调控过程的主要因素及相应的调控方法和机理进行了详细的阐述，同时总结了1T-MoS2在析氢、电池、光和热催化领域的应用，可为1T-MoS2的定向合成与应用打下一定的基础。另外，也对 1T-MoS2在未来的实际应用前景进行了展望。

Abstract:

MoS2 has drawn significant attention in the field of electricity, energy and catalysis due to their unique two-dimensional "sandwiched" layered structure. MoS2 mainly exists in the form of 1T and 2H phases because the different coordination modes of Mo with S atoms. In general, 1T-MoS2 has a larger interlayer spacing and more catalytically active sites, and shows better performance than 2H-MoS2 in many fields. Via controlling the lateral displacement of the S-plane and as well as the electron filling state of the 3d orbital of Mo, the 1T-MoS2 could be synthesized by the directional regulation of 2H-MoS2. In view of this, the research progress of the preparation of 1T-MoS2 from 2H-MoS2 by directly regulating is reviewed, and the methods and mechanisms involved in the main influencing factors in the regulation process are described in detail. At the same time, the application of 1T-MoS2 in the fields of hydrogen evolution, battery, photo and thermal catalysis is summarized, which can lay a certain foundation for the directional synthesis and application of 1T-MoS2. In addition, the prospects for the practical application of 1T-MoS2 in the future are also prospected.