Preparation method of zinc sulfide-cuprous sulfide nano hetero-structure material

Abstract

A preparation method of a zinc sulfide-cuprous sulfide nano hetero-structure material comprises the following steps: (1) mixing zinc chloride with oleyl amine and octadecene, sealing a container, vacuumizing, introducing inert gas, and stirring to obtain a mixed solution A; (2) heating the mixed solution A, carrying out heat preservation reaction, then, carrying out heating reaction, and naturally cooling to obtain cation exchange liquid; (3) dispersing cuprous sulfide spherical nano particles into tri-n-octyl phosphine, and carrying out ultrasonic oscillation to obtain a black mixed solution B; (4) injecting the black mixed solution B into a cation exchange solution, and carrying out a heating reaction to obtain a reaction solution; and (5) cooling the reaction solution in an ice-water bath, then adding a centrifugal solution, centrifuging to obtain a precipitate, adding a cleaning solution into the precipitate, and cleaning to obtain the zinc sulfide-cuprous sulfide nano hetero-structure material. The preparation method is simple, no toxic gas is generated, the cost is low, and the product morphology is regular.

Description

technical field [0001] The invention relates to a preparation method of a nanometer material, in particular to a preparation method of a zinc sulfide-cuprous sulfide nanometer heterogeneous structure material. Background technique [0002] Different components may have different functions. Nanoheterostructure refers to the fusion of two or more different components into one nanoparticle. Therefore, nano-heterostructure materials have broad application prospects in the fields of energy conversion and biomedicine. In nanoheterostructures, the synergy between different domains can generate property combinations rather than simple superposition of component properties. For example, a p–n junction can be formed at the interface between p-type and n-type semiconductor domains within a nanoparticle, so that cooperative charge separation, that is, the efficient transfer of photoexcited carriers into individual nanodomains, can effectively slow down the recombination of carriers. ...

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Problems solved by technology

However, these methods have some shortcomings to a certain extent. For example, it is difficult to precisely control the morphology and particle size of nanoparticles by seed crystal growth, and the one-pot method is very likely to form a single-phase nanoparticle with a single heterostructure component. particles, or even other phases composed of the same elements

[0004] CN 105036175 A discloses a method for preparing copper sulfide-zinc sulfide nano-heterostructures using a solid-state method, but the morphology and particle size of the prepared nanomaterials are difficult to precisely control

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