Preparation method of gallium oxide hydroxide nano-crystals

Abstract

The invention provides a preparation method of gallium oxide hydroxide nano-crystals and belongs to the technical field of preparation of gallium oxide hydroxide nano-materials. According to the reaction kettle sealed heating alcoholysis method and the liquid-liquid interface reaction principle, through gradually dropwise adding methanol into a gallium oxide benzene solution disposed in an ultrasonic appliance and then enabling the mixed solution to be subjected to sealed low-temperature heating reaction, the prepared sample is white powders. The crystals in nano brush shape and which in smooth in surface, complete in shape and uniform in size are prepared under a preferable condition. According to the invention, the synthesis of gallium oxide hydroxide nano-crystals is carried out by using the alcoholysis reaction method for the first time, the disadvantage that the gallium oxide is very liable to absorb water and be decomposed by moisture is overcome, the operations are finished without adjusting pH (potential of hydrogen) and without using a vacuum condition, the reaction speed of the gallium oxide is significantly inhibited, so that the shape of the generated gallium oxide hydroxide is more easy to control. In addition, the product prepared by the method provided by the invention is high in yield and high in purity; and the preparation method is simple, excellent in repeatability and low in cost.

Description

technical field [0001] The invention belongs to the field of preparation of IIIA group oxyhydroxide nanomaterials, and particularly provides a novel, simple and efficient method for preparing gallium oxyhydroxide (GaOOH) nanocrystals. Background technique [0002] Due to its unique properties such as small size effect, surface effect, quantum size effect, and macroscopic quantum tunneling effect, nanomaterials have characteristics that ordinary materials do not have in terms of light, electricity, magnetism, and sensitivity. Therefore, nanomaterials have received more and more attention and applications in recent years. For example, it has been widely used in optical materials, electronic materials, magnetic materials, sintering of high-density materials, catalysis, sensing, and ceramic toughening. [0003] In recent years, compound semiconductor materials of gallium metal in group IIIA have been widely used in the fields of electronics, optoelectronics and electrochemistry...

AI Technical Summary

Problems solved by technology

[0004] In recent years, due to the limitations of experimental conditions and technical means, the preparation of GaOOH has not progressed efficiently, and most of the work has focused on GaCl 3 The hydrolysis method is used to synthesize GaOOH, and the pH value of the solution is adjusted in the process to inhibit hydrolysis and finally control the morphology and size of the GaOOH it grows (J.Cryst.Growth.280,99-1062005.; J.Cryst.Growth. 8(4),1282-1287(2008).), the steps are extremely cumbersome; and because GaCl 3 It is easily hydrolyzed in the air, so the preparation process needs to be completed in a very high vacuum environment, the conditions are very harsh, and the yield of the prepared samples is also very low; at the same time, it is known from the previous literature research that there is no one in the synthesis of GaOOH Exceptionally, water is chosen to provide the hydroxyl groups required for the reaction, which for GaCl 3 For this substance that reacts rapidly with water, it has caused more difficulties in controlling the shape and size of GaOOH

[0005] The report of GaOOH (gallium oxyhydroxide) nanocrystals and GaOOH (gallium oxyhydroxide) nanobrush crystals prepared by alcoholysis has not yet appeared.

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