The invention discloses a ferrous sulfide (FeS) nanometer powdered material with an aluminium sulfide (Al2S3) casing and a preparation method thereof, and belongs to the technical field of preparing nanometer materials. The nanometer powdered material is in a core-shell structure, a kernel is an FeS nanometer particle, and the casing is an Al2S3 layer; the particle diameter of the FeS nanometer particle kernel is 10-100 nm, and the Al2S3 casing layer is an amorphous Al2S3 layer of which the thickness is 1-10 nm. According to the invention, a plasma arc discharge method is adopted, according to a certain atomic percent, ferrous powder and aluminium powder are pressed into a block which is used as an anode material, a graphite is used as a cathode material, an argon gas and a hydrogen sulfide gas are used as a work gas, a certain distance is kept between a cathode and an anode, and arc discharge is generated between the cathode and the anode, so that the FeS nanometer powdered material with the Al2S3 casing is obtained. The preparation process of the ferrous sulfide nanometer powdered material is simple, post-processing working procedures are avoided, and the cost is low, so that industrialized production is easy to realize.

Ferrous sulfide nanometer powdered material with aluminium sulfide casing and preparation method thereof

The invention discloses a technology for synthesizing sulfur quantum dots through an oil-water interface method. The technology comprises the following steps: 1, preparing metal sulfide quantum dots; 2, preparing a nitric acid solution; and 3, preparing sulfide quantum dots. In the invention, oleic acid is used as a solvent to prepare oil-soluble metal sulfide quantum dots, an n-hexane solution of a metal sulfide and an aqueous solution of nitric acid are mixed as an oil phase and a water phase respectively, nitric acid oxidizes sulfide ions into elemental sulfur in situ at the phase interface, and the metal sulfide quantum dots are adopted as a template to realize the uniform distribution of the particle sizes of the prepared sulfur quantum dots, so the oil-water interface alleviates the reaction speed and realizes the dispersion and small particle sizes of sulfur nano-particles. The technology allows the sulfur quantum dots to be synthesized by adopting the above technical scheme through the oil-water interface reaction with the n-hexane solution of the metal sulfide as the oil phase and the aqueous solution of nitric acid as the water phase, so the technology has the advantages of mild reaction conditions, simple operation, controllable particle size and easy popularization.

Technology for synthesizing sulfur quantum dots through oil-water interface method

The invention discloses double-component condensation type high-temperature-resisting silicon rubber and a preparation method. The double-component condensation type high-temperature-resisting siliconrubber is prepared from a component A and a component B, wherein the component A is prepared from 50 to 65 parts of white carbon black, 6 to 12 parts of methyl silicone oil, 20 to 25 parts of high-temperature water, 5 to 7.5 parts of hexamethyldisilazane, 9 to 12 parts of a PE (Polyethylene) compound antioxidant, 6 to 8 parts of iron copper disulfide and 5 to 10 parts of an accelerant; the component B is prepared from 29 to 35 parts of tetraethyl orthosilicate and 5 to 8 parts of dibutyltin dilaurate. The double-component condensation type high-temperature-resisting silicon rubber disclosed by the invention keeps good mechanical properties and surface effect under a high-temperature condition of 300 DEG C.

Double-component condensation type high-temperature-resisting silicon rubber and preparation method

A method of forming CuFeS 2 chalcopyrite nanoparticles. The method includes, in the presence of one or more ligands, reacting an iron-containing compound, a copper-containing compound and a sulfur-containing compound to form CuFeS 2 chalcopyrite nanoparticles; and wherein at least one of the ligands forms a coordination complex with copper, and at least one of the ligands forms a coordination complex with iron. Also a method of forming metal-doped CuFeS 2 chalcopyrite nanoparticles such as Zn-doped CuFeS 2 chalcopyrite nanoparticles. Also, a CuFeS 2 chalcopyrite nanoparticle layer on a substrate. Also, a composition of matter including Zn-doped CuFeS 2 chalcopyrite nanoparticles. Also, a Zn-doped CuFeS 2 chalcopyrite nanoparticle layer on a substrate.

Methods for making doped and undoped copper chalcopyrite nanoparticles and thin films thereof

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Methods for making doped and undoped copper chalcopyrite nanoparticles and thin films thereof