Hydrangea-like zinc oxide@copper sulfide and preparation method thereof

Abstract

The invention provides a hydrangea-like zinc oxide@copper sulfide and a preparation method thereof. The preparation method comprises the following steps that step 1, a zinc source and sodium citrate are dissolved in water at room temperature, the mixture is stirred to form a colorless transparent solution; and then a sodium hydroxide aqueous solution is added to adjust to a pH value to be 11-13, auniform milky white solution is formed, and the mixture is stirred for reaction at room temperature, and the product is centrifuged and dried to obtain the hydrangea-like zinc oxide; and step 2, thehydrangea-like zinc oxide prepared in the step 1 is dispersed in isopropyl alcohol, a stable suspension is formed, then, an aqueous solution of sodium sulfide nonahydrate is added to the suspension, the mixture is stirred for reaction at room temperature to obtain a system A, finally an isopropanol solution of copper chloride dihydrate is added to the system A, the mixture is stirred for reactionat room temperature, and the mixture is centrifuged and dried to obtain the hydrangea-like zinc oxide@copper sulfide. The operation is simple and the reaction conditions are mild. The prepared zinc oxide@copper sulfide is a hydrangea-like morphology, and is expected to be applied to visible light catalysis, photothermal diagnosis and superhydrophobic coating.

Description

technical field [0001] The invention relates to a preparation method of an inorganic nanocomposite material, in particular to a hydrangea-shaped zinc oxide@copper sulfide and a preparation method thereof. Background technique [0002] Compared with conventional materials, nanomaterials exhibit many special properties due to small size effects, quantum effects, surface effects, etc., so they have broad application prospects in catalysis, biology, energy, and medical treatment. At present, researchers have prepared a series of nanomaterials, such as TiO 2 , CuO, ZnO, SiO 2 、Co 3 o 4 , NiO, etc. Among them, nano-ZnO is a semiconductor material with a band gap of 3.37eV and an exciton binding energy as high as 60meV. It has excellent electrical, optical, mechanical properties and chemical stability. The research enthusiasm of nano-CuS is no less than that of nano-ZnO. It is a new type of semiconductor material with rapid development. It has good visible light absorption eff...

AI Technical Summary

Problems solved by technology

However, there are still problems in the preparation methods of the two composites in the existing literature, such as complicated operation steps and harsh reaction conditions, which are not conducive to the large-scale preparation of composite particles.

In addition, the composite morphology of ZnO and copper sulfide reported in the existing literature is still relatively small, mainly focusing on the coating of CuS on the surface of ZnO particles or arrays, and the preparation and application of hydrangea-like ZnO@CuS have not been reported yet.

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