Mussel-inspired polydopamine and Al2O3 nanoparticles co-modified MoS2 for reinforcing anticorrosion of epoxy coatings

Diatomite@MoS2 Nanocomposite Layers as Composite Coating Targeting for Mg Alloys Endowed with Properties of Anticorrosion and Antiwear

“…In further research, Zhao et al modified molybdenum disulfide with SDBS acid, which allowed for better physical and chemical interactions with epoxy resin. Moreover, incorporating this inorganic nanofiller is advantageous compared to other research studies because inorganic nanomaterials have excellent morphology and structure and good thermochemical stability capable of better bonding with epoxy powder. , The unique 2D planar laminar morphology enhances the barrier properties of the coating and counteracts the microcracks in the special coatings, thereby reducing the permeability of corrosive media. Meanwhile, MoS 2 has a unique layered structure, similar to that of graphene, in which the inner atoms are connected by covalent bonds, and the intercalated atoms are vertically and loosely stacked and integrated by weak van der Waals forces .…”

Polypyrrole-Modified Molybdenum Disulfide Nanocomposite Epoxy Coating Inhibits Corrosion of Mild Steel

“…At the same time, MoS 2 is an abundant mineral in nature, its nanosheets can be obtained on a large scale by simple liquid phase sonication and ball milling, and the development of MoS 2 for corrosion protection is also conducive to the comprehensive development and utilization of molybdenum resources. Among them, MoS 2 has excellent mechanical properties, chemical resistance, and an ultra-thin layer structure [15], and unlike graphene, it is a high bandgap semiconductor material that has no effect on the electrical conductivity of epoxy resins and does not cause "corrosion-promoting activity", which started to receive attention in the field of corrosion protection [16]. Xia et al modified MoS 2 with dopamine and added it to epoxy resin by introducing catechol-OH group and amino group, which greatly improved the adhesion of epoxy resin [17]; Chen et al modified MoS 2 with silica, which enhanced its compatibility with epoxy resin and greatly improved the corrosion resistance of epoxy resin [18]; Ding et al noted that the power function of MoS 2 less layer structure (4.5 eV) is lower than that of iron (4.73 eV) compared to that of monolayer MoS 2 (5.26 eV), which causes the formation of the Schottky barrier (n-type barrier) in the anticorrosion process and is more favorable for anticorrosion applications [19]; Tang et al noted that transition metal sulfides such as MoS 2 can be strongly coordinated with polyaniline, nitrogen in PPy atoms for strong coordination [20].…”