Method for preparing inorganic porous nano material through multi-frequency compound ultrasonic cooperative reinforcement

Abstract

The invention provides a method for preparing an inorganic porous nano material through multi-frequency compound ultrasonic cooperative reinforcement. The method comprises: weighing 23.616g of Ca(NO3)2 4H2O and 7.924g of (NH4)2HPO4 respectively, and dissolving with de-ionized water; accurately preparing a 0.100mol / L Ca(NO3)2 solution and a 0.060mol / L (NH4)2HPO4 solution by a volumetric flask; adjusting the pH (Potential of Hydrogen) of the two solutions to be about 10.2 by utilizing ammonia water; then, slowly dropwise adding 100mL of the (NH4)2HPO4 solution with the concentration of 0.060mol / L into a beaker containing 100mL of the Ca(NO3)2 solution with the concentration of 0.100mol / L through a separating funnel at room temperature; meanwhile, continuously stirring by a magnetic stirrer and reacting; after dropwise adding, moving the beaker filled with a reaction solution into a multi-frequency compound ultrasonic experiment device and carrying out ultrasonic treatment for 1h to 3h, wherein the reaction temperature is 30 DEG C to 50 DEG C; drying to obtain porous nano hydroxyapatite with a uniform size, good dispersity, high purity and high yield. Synthetic product particles prepared by the method have the advantages of uniform size, good spherical structure and high purity.

Description

technical field [0001] The invention belongs to the technical field of inorganic material strengthening, and in particular relates to a method for preparing inorganic porous nanomaterials through multi-frequency compound ultrasonic synergistic strengthening. Background technique [0002] The pore-forming technology of hydroxyapatite nanometers has been the main focus of research in the past ten years, and it is still a difficult point in the current development work, especially the comprehensive technology of controlling porosity and pore size to achieve "high quality, high efficiency, simplicity and low cost". Economic indicators are more important. At present, there are many methods for preparing hydroxyapatite nanomaterials, such as hydrothermal reaction method, adding pore-forming agent method, gas decomposition method, impregnation method, microwave process method and hydrothermal hot pressing method, etc. These synthesis methods cannot meet the requirements of uniform...

AI Technical Summary

Problems solved by technology

As early as the 1920s, Loomis et al. discovered that ultrasonic waves could accelerate chemical reactions and improve biological activity, but they did not attract the attention of chemists at that time. In addition, the level of ultrasonic technology, especially the development level of ultrasonic generators, was backward, which affected and limited the use of ultrasonic waves in chemistry. , Chemical application and research