Edge promotion and basal plane activation of MoS2 catalyst by isolated Co atoms for hydrodesulfurization and hydrodenitrogenation

A review on tailoring the corrosion and oxidation properties of MoS2-based coatings

“…Contaminants such as air, water vapor, and atomic and molecular oxygen, oen present in the environment, alter the properties and oxidize MoS 2 , signicantly affecting lubricating and semiconducting properties and mechanical durability. [79][80][81][82][83] The surface oxidation of MoS 2 has been reported since the 1950s when Ross and Sussman observed the oxidation of MoS 2 in air and water through the direct chemical analysis of oxidation products at different temperatures. 79 Aer that, several reports elucidated the effect of the environment, direct oxygen treatment, water treatment, etc., on the oxidation and properties of MoS 2 .…”

“…Site vacancies in MoS 2 will also act as active sites for hydrodesulfurization (HDS) and also hydrodenitrogenation (HDN) reactions. 82 In addition, the edges of MoS 2 will also enhance the electrocatalytic reaction and correspondingly helps in the hydrogen evolution reaction. 83 Generally, the oxidation process of MoS 2 under ambient conditions can be described as follows: 79 S is replaced by O to form molybdenum trioxide (MoO 3 ).…”

“…Site vacancies in MoS 2 will also act as active sites for hydrodesulfurization (HDS) and also hydrodenitrogenation (HDN) reactions. 82 In addition, the edges of MoS 2 will also enhance the electrocatalytic reaction and correspondingly helps in the hydrogen evolution reaction. 83…”

Recent advances in defect-engineered molybdenum sulfides for catalytic applications

“…Thus, the active edge sites adapt their sulfur, hydrogen, and hydrocarbon coverages according to the gas environment, thus adjusting the prevalent structure. Last but not least, it is worth mentioning that, similar to HDS, MoS 2 catalysts can also be used in hydrodeoxygenation (HDO), 253,254 hydrodenitrogenation (HDN), 255 CO 2 hydrogenation, 256 and so on, and the high catalytic activity undoubtedly relies on the sophisticated design of the defective structure.…”

Controlling basal plane sulfur vacancy in water splitting MoSx/NiF electrocatalysts through electric-field-assisted pulsed laser ablation

“…Another strategy, potentially most effective but less explored, is by activating sulfur atoms on the basal plane of MoS 2 , the majority of the inert materials in the bulk, to fully utilize most of the materials in the volume to enhance its electrocatalytic efficiency. 48 , 49 Therefore, a simple, efficient, and environment-friendly method for generating S-vacancy in the basal plane/volume of MoS 2 NPs is highly desirable. Very recently, there have been limited research efforts in activating S-vacancy sites at the basal plane of MoS 2 to enhance its electrocatalytic HER performance.…”