Preparation method of particle size controllable cuprous oxide micro-spheres

Abstract

The invention provides a preparation method of particle size controllable cuprous oxide micro-spheres, and belongs to the technical field of preparation of inorganic functional materials. The preparation method is characterized by comprising the following steps of: preparing an aqueous solution containing citrate ions and calcium hydroxide; agitating to obtain uniform suspension; adding phosphoric acid containing aqueous solution by drops; stopping dropping until the pH of the suspension is lowered down to reach 10; standing; washing with an ammonium chloride aqueous solution; preparing another aqueous solution through centrifugally separated hydroxyapatite colloid; adding copper sulfate; agitating to react for 12 hours; then adding glucose, sodium carbonate and trisodium citrate in sequence; reacting for 12 hours under the temperature of 95 DEG C; filtering; washing; drying to obtain the cuprous oxide micro-spheres. The preparation method has the advantages that the process is simple, the reaction temperature is low, the chemical agents adopted are safe, and the size of the cuprous oxide micro-spheres is conveniently controlled, and ranges from 0.5 to 10 microns.

Description

technical field [0001] The invention relates to a method for preparing cuprous oxide microspheres with adjustable particle size, and belongs to the technical field of preparation of inorganic functional materials. Background technique [0002] As a semiconductor material, cuprous oxide particles are widely used in the fields of photocatalysis, solar cells and electrolyte materials. For functional components prepared from cuprous oxide, the shape and size of cuprous oxide have a great influence on the components. The optimization of physical properties such as fabrication and its optical, electrical and optoelectronic properties has a significant impact. In the process of device preparation, the flow, accumulation and dispersion of particles are restricted by particle shape, while the particle size affects the surface properties of cuprous oxide, which in turn affects the realization of the physical properties of components, including optical, electrical and photoelectric. C...

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Problems solved by technology

The reported preparation method of spherical cuprous oxide adds a large amount of surfactants, and the safety impact of these surfactants on the environment has been questioned, which is not conducive to large-scale safe production

In addition, although the particle size can be adjusted, the range of adjustment is limited.

Generally speaking, the size of the particles is mainly regulated by the concentration of the reaction substance. When the concentration is high, cuprous oxide with a small size can be obtained, while when the concentration is low, the size of cuprous oxide obtained is large, such as Wang Yuejun et al. (Inorganic Acta Chemica Sinica, 27 (2011), pp. 2405) prepared cuprous oxide spherical particles of different sizes by changing the concentration of the reaction substance, but the size control range was 0.67-3.27 microns. It can be seen that only by changing the concentration of ions in the solution There are still limitations in controlling the size of cuprous oxide particles

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