A kind of transition metal dichalcogenide nanosheet composite and preparation method thereof

Abstract

The invention belongs to the technical field of functional materials, and particularly relates to a transition metal dithio compound nanometer sheet layer compound and a preparation method thereof. According to the method, a polymer modified transition metal dithio compound nanometer sheet layer is obtained through water phase ultrasonic peeling of transition metal dithio compound powder; high-temperature treatment is performed, and the dithio compound nanometer sheet layer / graphitized carbon compound is obtained, and can be used as an efficient electrochemical hydrogen evolution catalyst; or thermosensitive monomers and cross-linking agents are added into a nanometer sheet layer water solution for further preparing a composite gel of the dithio compound nanometer sheet layer, and the composite gel can be used as a temperature response and near infrared response dual-response intelligent composite gel material. The compound and the preparation method have the advantages that environment-friendly and pollution-free effects are achieved on the water phase peeling process of the nanometer sheet layer; the operation is simple and convenient; the production cost is low; the mass production can be easily realized; the prepared graphitized carbon compound and the composite intelligent gel have various functions; the large-scale preparation potential and wide commercial application prospects are realized.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a multifunctional transition metal dichalcogen compound nanosheet composite and a preparation method thereof. Background technique [0002] In recent years, with the rise of research on two-dimensional nanosheet materials such as graphene, other two-dimensional layered compounds with graphene-like structures have also attracted extensive attention from researchers in many fields such as physics, chemistry, materials, electronics, and biomedicine. interest. In particular, nanosheets of transition metal dichalcogenides have many properties similar to or even superior to graphene, and have great development prospects and potential applications in the fields of optoelectronic devices, electrochemical catalysis, and biomedicine. Their synthesis and Performance research has also received more and more attention. In addition, in order to further develop its app...

AI Technical Summary

Problems solved by technology

According to the liquid-phase stripping technology proposed in Science, 2011, 331, 568, some high-boiling point solvents have similar surface energy to transition metal dichalcogenides, so they can effectively strip transition metal dichalcogenides, Therefore, the liquid-phase stripping medium commonly used at present is a high-boiling point organic solvent. However, the high-boiling point organic solvent is difficult to remove in the later stage, and the organic solvent may cause pollution problems in industrial production. Therefore, a green and environmentally friendly water-phase stripping transition metal disulfide is used The compound method will have a broader prospect of industrial application

At present, there are few reports on the method of stripping transition metal dichalcogenides in aqueous phase. In 2011, "Advanced Materials" (Advanced Materials, 2011, 23, 3944–3948) reported a method of stripping transition metal dichalcogenides with an aqueous solution of sodium cholate surfactant. The method of two-dimensional sheet materials has subsequently caused some related research, but the current research is limited to the exfoliation of transition metal dichalcogenides, and there are few studies on the further preparation of functionalized composite materials from the exfoliated nanosheets.

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