Nano-class silver oxide and preparation method thereof

Abstract

The invention relates to a nano-class silver oxide and preparation method thereof which comprises, using dual injection control technology, stirring through a stirrer, charging silver nitrate water solution and sodium-hydroxide water solution simultaneously into reaction system containing protective agent water solution, obtaining silver oxide particles and performing cooling down, filtering, washing and drying.

Description

technical field [0001] The invention relates to nanoscale silver oxide and a preparation method thereof. Background technique [0002] Silver oxide is widely used in industries such as electronic components, button batteries, preservatives, purifiers, glass colorants, abrasives and chemical catalysts. 30% of industrial silver is used in the production of silver oxide or silver nitrate, and the consumption of silver oxide in the electronic components industry accounts for about 90% of the total output of silver oxide. At present, the domestic production of silver oxide mainly adopts the method of adding silver nitrate solution to sodium hydroxide solution dropwise. After the silver oxide is precipitated, the silver oxide product is obtained through washing, separation and drying, but the particle size of the product is generally in the micron range. size, it is difficult to meet the requirements of the application field that the smaller the silver oxide particle size, the be...

AI Technical Summary

Problems solved by technology

In order to realize the low concentration of the reactants to participate in the reaction, the slow drop method is usually adopted. Although this reduces the concentration of one of the reactants to a certain extent, which is beneficial to reduce the growth rate of the silver oxide particles, it cannot make the two kinds of reactants at the same time. The reactants are all reacted at low concentrations, and the growth rate of particles cannot be reduced to the greatest extent, and there is a lack of corresponding supporting devices to assist in solving the problem of reactant concentration, which eventually leads to larger particles

In short, the above preparation methods have a long production cycle and large product particles, and further improvement is needed in the preparation process and preparation equipment.