Surfactant-exfoliated 2D molybdenum disulphide (2D-MoS₂): the role of surfactant upon the hydrogen evolution reaction

Abstract

Surfactant (sodium cholate, SC) mediated liquid (aqueous) phase exfoliation is a common approach to fabricate 2D molybdenum disulphide (2D-MoS 2 -SC) nanosheets since it is a facile methodology producing defect free flakes with nanometer lateral sizes. The electrocatalytic behaviour of 2D-MoS 2 -SC towards the Hydrogen Evolution Reaction (HER) is benchmarked within acidic media and found to exhibit inferior HER activity to an equivalent mass of pristine 2D-

The synthesis of two-dimensional MoS2 nanosheets with enhanced tribological properties as oil additives

“…2 As a typical example, 2D molybdenum disulde (MoS 2 ) has a structure analogous to graphene, in which two close-packed sulfur atom layers sandwich one molybdenum atom layer and these layers are held together by van der Waals forces. 3 Due to their extremely thin structure, the 2D MoS 2 nanosheets exhibit unique mechanical, electrical, thermal and optical properties, 4 making them signicantly different from their bulk counterparts and also resulting in their application in catalysis, 5,6 electronics, 7 photonics, 8 energy storage, 9,10 and sensors. 11 Over the past few decades, MoS 2 nanoparticles with various morphologies, such as nanosheets, 12 ower-like structure, 13 sphere-like structure 14 and fullerene-like structure, 15 have been used as oil additives.…”

Strategies to improve electrocatalytic and photocatalytic performance of two-dimensional materials for hydrogen evolution reaction

“…In addition to the synthesis method, factors such as the solution pH, reaction temperature, surfactant, and type of solution also greatly affect the morphologies and properties of 2D materials prepared via exfoliation [148][149][150][151][152]. (002)-MoS2 synthesized in a lower pH solution was found to have a larger specific surface area because low pH is conducive to the activation of inert (002)-MoS2 ( Fig.…”

Graphene to Advanced MoS2: A Review of Structure, Synthesis, and Optoelectronic Device Application

“…Secondly, the exfoliation of the bulk counterpart into nanosheets by sonication. However, surfactants are added as a stabilizing agent [140,141]. Third and the least one, separation of individual sheets and centrifugation.…”