A simple and convenient preparation method of hollow spherical cus nanomaterials

Abstract

The invention discloses a simple preparation method of hollow spherical CuS nanometer material, which greatly improves the current preparation technology. According to the invention, water solutions of soluble copper salt and thiocarbamide are used as a precursor solution, and the hollow spherical CuS nanometer material can be prepared through a one-step ultrasonic reaction process. The hollow spherical CuS nanometer material adopts a hollow hierarchical structure, has no agglomeration, is monodisperse and uniform in particle size distribution, has a larger specific surface with the external diameter between 400 nm and 500 nm and the shell thickness between 30 nm and 40 nm, and is formed by finer nanoparticles with the particle size between 5 nm and 20 nm. According to the invention, any surfactant, additive and organic solvent are not used, the process is clean, and the environmental friendliness is realized; the reaction temperature is low, the reaction time is short, and the energy is saved; raw materials are easy to get, the cost is low, the industrial production is facilitated, and the prepared nanometer material can be used in the fields of catalysis, bacterium resistance, solar cell and sensor materials and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic functional materials, and in particular relates to a preparation method of a hollow spherical CuS nanometer material. Background technique [0002] Due to their unique functions and properties, nanomaterials play an important role in many fields such as nano optics, electricity, and magnetism. The properties of nanomaterials depend on their morphology and particle size, so controlled synthesis of nanomaterials with unique morphology has attracted more and more attention. Nanomaterials with hollow structures have large specific surface area, low density, excellent permeability, and unique photoelectric and surface properties, and have always been one of the hotspots in nanomaterial science research. [0003] CuS is an excellent semiconductor material and has a wide range of applications in photothermal, photoelectric, sensors, superconductivity, solar cells, lithium-ion rechargeab...

AI Technical Summary

Problems solved by technology

[0004] In combination with the various preparation methods involved above, either surfactant or other auxiliary agents (such as reducing agent) need to be used, which not only increases the preparation cost, but also affects the purity and output of the product; or requires special reaction instruments and equipment (such as microwave hydrothermal reaction equipment); or the preparation process is cumbersome and the reaction time is long (hours or tens of hours)

Moreover, the reaction temperature is usually high (even as high as 200°C), and even organic solvents (such as methanol, ethylenediamine, etc.) are used, which are harmful to people and the environment, and do not belong to green environmental protection technology.

The prepared CuS hollow structure has a relatively large particle size distribution, and the outer diameter reaches the micron level. The product quality is not high, which is not conducive to industrial production and application.

Images