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

Author(s)

Rodriguez, Camila L. C. ^[1] ; Munoz, Pablo A. R. ^[1] ; Donato, Katarzyna Z. ^{[1, 2]} ; Seixas, Leandro ^[1] ; Donato, Ricardo K. ^{[1, 2]} ; Fechine, Guilhermino J. M. ^[1]

Affiliation

^[1] Univ Prebiteriana Mackenzie, MackGraphe Mackenzie Inst Res Graphene & Nanotech, Rua Consolacao 896, BR-01302907 Sao Paulo, SP - Brazil

^[2] Acad Sci Czech Republ, Inst Macromol Chem, Heyrovsky Sq 2, Prague 16206 6 - Czech Republic

• Document type: Journal article
• Source: Physical Chemistry Chemical Physics; v. 22, n. 3, p. 1457-1465, JAN 21 2020.
• Web of Science Citations: 0

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. (AU)

• FAPESP's process: 12/50259-8 - Graphene: photonics and opto-electronics: UPM-NUS collaboration
• Grantee: Antonio Helio de Castro Neto
• Support Opportunities: Research Projects - SPEC Program
• FAPESP's process: 18/10910-8 - Photodegradation and photostabilization of polymer nanocomposites based on two-dimensional fillers
• Grantee: Guilhermino José Macêdo Fechine
• Support Opportunities: Regular Research Grants
• FAPESP's process: 17/00486-1 - Graphene 2017
• Grantee: Leandro Seixas Rocha
• Support Opportunities: Research Grants - Meeting - Abroad