• 文献标题:   Oxidation layering mechanism of graphene-like MoS2 prepared by the intercalation-detonation method
  • 文献类型:   Article
  • 作  者:   YANG F, WANG KS, HU P, CHEN ZY, DENG J, HU BL, CAO WC, LIU DX, AN G, VOLINSKY AA
  • 作者关键词:   graphenelike mos2, oxidation layering mechanism, intercalationdetonation, b1u a 1g peak, raman vibration mode
  • 出版物名称:   NANO RESEARCH
  • ISSN:   1998-0124 EI 1998-0000
  • 通讯作者地址:   Xian Univ Architecture Technol
  • 被引频次:   1
  • DOI:   10.1007/s12274-017-1713-1
  • 出版年:   2018

▎ 摘  要

Graphene-like MoS2 has attracted significant interest because of its unique electronic, optical, and catalytic properties with two-dimensional lamellar structure. Three kinds of intercalated MoS2 samples were prepared using different oxidation layering methods, which are the first steps of intercalation-detonation. The oxidation layering mechanism of graphene-like MoS2 was systematically characterized using Fourier transform infrared, X-ray photoelectron, and Raman spectroscopy techniques. The bulk MoS2 sample was gradually oxidized from the edge to the interlayer in the presence of concentrated H2SO4 and KMnO4. A large number of hydroxyl groups were bonded to the sulfur atom layer, forming S-OH bonds in the basal planes of the MoS2 structure. The addition of deionized water to concentrated H2SO4 generated a large amount of heat, promoting the generation of more S-OH bonds, destroying residual Van der Waals forces between the layers, and finally stripping off parts of the flakes. The continuous addition of deionized water in the high temperature stage resulted in the largest oxidative intercalation effect. Additionally, the eta factor was determined to compare the intensities of B-1u and A(1g) peaks in the Raman spectra and quantify the effect of oxidative intercalation. The highest value of eta was obtained when deionized water was added continuously during the preparation of intercalated MoS2.