| Intercalation process as a surface engineering route of two-dimensional molybdenum sulfide (MoS2): a mini review |
Jyoti Ganapati Badiger1, Maheswari Arunachalam2, Rohini Subhash Kanase1, Suzan Abdelfattah Sayed3, Soon Hyung Kang2
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1Department of Interdisciplinary Program for Photonic Engineering, Chonnam National University, Gwangju, 61186, Republic of Korea
2Department of Chemistry Education and Optoelectronic Convergence Research Center, Chonnam National University, Gwangju, 61186, Republic of Korea
3Department of Chemical Engineering, Chonnam National University, Gwangju, 61186, Republic of Korea |
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Received: June 2, 2024; Revised: July 12, 2024 Accepted: July 29, 2024. Published online: August 13, 2024. |
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| ABSTRACT |
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Two-dimensional (2D) molybdenum disulfide (MoS2) has attracted significant attention due to its unique structure and properties, especially following the discovery of graphene. This is mainly attributed due to its flexibility which facilitates the MoS2 phase and properties exploration. MoS2 mainly exists in three phases, 2H, 1T and 3R, where the naturally occurring 2H and 3R phase of MoS2 acts as a semiconductor, with active edge sites and inactive basal planes. Conversely, the metallic 1T phase of MoS2 features active edge sites and basal planes, making it more favorable for various applications. Numerous efforts have been made to modify bulk MoS2 which exists as a 2H phase. By utilizing intercalation, which facilitates the conversion from the 2H to the 1T phase, also improves storage capacity and stabilizes metastable 1T phase, etc. To achieve these unique properties, various intercalation methods have been extensively studied and are thoroughly reviewed in this study. The intercalation process involves introducing foreign materials into a host material with adjustable van der Waals gaps. This allows for the insertion of guest material between the layers, making them excellent candidates for intercalation. In this review, we will explore various methods of intercalating MoS2 material, including the electrochemical, solution-based, wet chemical, and ion-exchange methods. |
| Key words:
2D MoS2 · Intercalation · Surface engineering · 2H to 1T conversion |
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