Understanding the unorthodox stabilization of liquid phase exfoliated molybdenum disulfide (MoS2) in water medium

Camila L. C. Rodriguez; Pablo A. R. Muñoz; Katarzyna Z. Donato; Leandro Seixas; Ricardo K. Donato; Guilhermino J. M. Fechine

doi:10.1039/C9CP06422B

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Understanding the unorthodox stabilization of liquid phase exfoliated molybdenum disulfide (MoS₂) in water medium†

Camila L. C. Rodriguez,^a Pablo A. R. Muñoz,^a Katarzyna Z. Donato,^ab Leandro Seixas,

^a Ricardo K. Donato

*^ab and Guilhermino J. M. Fechine*^a

Author affiliations

* Corresponding authors

^a MackGraphe – Mackenzie Institute for Research in Graphene and Nanotechnologies, Mackenzie Presbyterian University, Rua da Consolação, 896, São Paulo, Brazil
E-mail: guilherminojmf@mackenzie.br

^b Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
E-mail: donato@imc.cas.cz

Abstract

Molybdenum disulfide is a highly esteemed 2D material with interesting applications in nanoelectronics, composites, biotechnology and beyond. Its production through liquid-phase exfoliation in H₂O is low-cost and eco-friendly. Herein, we present a detailed experimental and theoretical investigation seeking to explain the peculiar stability of MoS₂ in H₂O medium. By combining different microscopic (SEM, AFM and OM), spectrometric (Raman, UV-vis and AFM-FTIR), scattering (DLS) and ab initio simulation techniques, an edge-functionalization hypothesis for the excellent solvent properties of water for producing few-layer MoS₂ has been demonstrated.

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Article information

DOI: https://doi.org/10.1039/C9CP06422B
Article type: Paper
Submitted: 27 Nov 2019
Accepted: 11 Dec 2019
First published: 11 Dec 2019

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Phys. Chem. Chem. Phys., 2020,22, 1457-1465

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Understanding the unorthodox stabilization of liquid phase exfoliated molybdenum disulfide (MoS₂) in water medium

C. L. C. Rodriguez, P. A. R. Muñoz, K. Z. Donato, L. Seixas, R. K. Donato and G. J. M. Fechine, Phys. Chem. Chem. Phys., 2020, 22, 1457 DOI: 10.1039/C9CP06422B

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