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Supercritical hydrothermal synthesis of MoS2 nanosheets with controllable layer number and phase structure

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Abstract

Molybdenum disulfide (MoS2), an attractive material for energy conversion devices, is known to exhibit varying properties depending on the number of layers and the phase structure. In this study, we developed a supercritical hydrothermal process that allows the controllable synthesis of MoS2 nanosheets with various structural and morphological characteristics. Detailed characterization of the synthesized materials confirmed that the number of layers in the MoS2 nanosheets could be controlled by varying the organic reducing agent under supercritical hydrothermal conditions. In addition, the MoS2 phase could be controlled kinetically by varying the reaction time with ascorbic acid as the reducing agent. Because water and elemental sulfur were respectively used as the solvent and sulfur source and as the reaction time was minimal, the developed hydrothermal process represents a facile processing method for different types of MoS2 nanosheets.

Graphical abstract: Supercritical hydrothermal synthesis of MoS2 nanosheets with controllable layer number and phase structure

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Article information


Submitted
21 Apr 2020
Accepted
24 Jun 2020
First published
24 Jun 2020

Dalton Trans., 2020, Advance Article
Article type
Paper

Supercritical hydrothermal synthesis of MoS2 nanosheets with controllable layer number and phase structure

Y. Takahashi, Y. Nakayasu, K. Iwase, H. Kobayashi and I. Honma, Dalton Trans., 2020, Advance Article , DOI: 10.1039/D0DT01453B

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