Preparation method of flaky cadmium sulfide-cuprous sulfide nano heterostructure material

Abstract

The invention relates to a preparation method of a flaky cadmium sulfide-cuprous sulfide nano heterostructure material. The preparation method comprises the following steps: (1) mixing cadmium chloride, oleylamine and octadecene; (2) sealing a container containing the mixture, vacuumizing, introducing inert gas, and uniformly stirring to obtain a mixed solution A; (3) heating the mixed solution A, preserving heat, and then cooling to obtain an ion exchange solution formed by complexing cadmium ions and oleylamine; (4) mixing flaky cuprous sulfide nanoparticles with tri-n-octylphosphine, and performing ultrasonic treatment to obtain a mixed solution B; (5) injecting the mixed solution B into the ion exchange solution obtained in the step (3), and carrying out heating reaction in inert gas to obtain a reaction solution; and (6) cooling the reaction solution; then adding a washing solution, and carrying out high-speed centrifugation and filtration to obtain a precipitate; and carrying out vacuum drying on the precipitate to obtain the flaky cadmium sulfide-cuprous sulfide nanoparticles. The obtained nano heterostructure is clear in component, regular in morphology, controllable in size, simple in process and low in cost.

Description

technical field [0001] The invention relates to a preparation method of a nanometer material, in particular to a preparation method of a sheet-like cadmium sulfide-cuprous sulfide nanometer heterogeneous structure material. Background technique [0002] Nanoheterostructure refers to the integration of two or more nanoscale fragments into one entity. Due to its structural complexity and potential application prospects in the fields of electronics, optoelectronics, and catalysis, it has attracted the attention of many researchers. [0003] Compared with single nanomaterials, nanoheterostructures can not only integrate the functions of each unit, but even derive new and unique properties due to the redistribution of carriers through the nanointerface, so they have become more promising in a wide range of applications. attractive candidates. [0004] Traditional methods for fabricating nanoheterostructures mainly include one-pot method and seed growth. However, the one-pot met...

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Problems solved by technology

However, the one-pot method is easy to form single-phase nanoparticles during the synthesis process; seed growth is difficult to maintain the shape and size of the parent nanocrystals, making it difficult to precisely control the particle size and shape of heterostructure nanoparticles

[0005] CN 10759717 A discloses a method for preparing cadmium sulfide-nickel sulfide heterostructure by solvothermal method, but the nanomaterial prepared by this method is a coating structure, rather than a symmetrical structure with clear components, which is not conducive to heterostructure Controlled adjustment of components

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