Process for temperature-control pressure-control microwave synthesis of water soluble cobaltosic oxide nano crystal

Abstract

The method refers to a temperature and pressure control microwave synthesis of water-soluble cobaltic-cobaltous oxide nanocrystal, using water as solvent, dissolving cobalt salt in water, adding water-soluble mercapto compound as stabilizer, controlling the mol ratio of cobalt ion and water-soluble mercapto compound as 1:10 to 1:1, adjusting solution's pH value to 5-12, getting precursor solution. Afterwards placing the precursor solution in hermetic polytetrafluoroethylene tank, reacting in microwave reactor of temperature and pressure controlled, quickly synthesize cobaltic-cobaltous oxide nanocrystal. The operation of this invention method is simple, the condition is gentle, the cost is low, and the synthetic product cobaltic-cobaltous oxide nanocrystal has the characters of good water-solubility, equal dimension distribution, adjustable size, high degree of crystallization and so on.

Description

technical field

[0001] The invention relates to a temperature-controlled and pressure-controlled microwave synthesis method for water-soluble cobalt trioxide nanocrystals. Cobalt salt is used as a raw material to prepare cobalt trioxide magnetic nanocrystals by means of temperature-controlled and pressure-controlled microwave synthesis technology, which belongs to the technical field of nanomaterial preparation. Background technique

[0002] co 3 o 4 Widely used in catalysts, pigments, magnetism, electrodes and energy storage materials. When the particle size reaches the nanometer level, due to the scale quantum effect and dielectric confinement effect, they exhibit a series of special magnetic and optical properties, and the large specific surface area makes them have significant advantages in the application of catalysts.

[0003] co 3 o 4 The synthesis of commonly used solid phase reaction method and aqueous phase synthesis method. The solid-state reaction method gen...