Preparation method of yttrium oxide doped nanometer fluorescent powder

Abstract

The invention discloses a preparation method of yttrium oxide doped nanometer fluorescent powder. The preparation method comprises the following steps of: step one, preparing a first mixed solution of Y(NO3)3 and Eu(NO3)3, adding a NaOH solution to the first mixed solution and stirring so as to form a second mixed solution, and enabling the pH value of the second mixed solution to be 6-8; step two, adding NaOH having the same weight as that of NaOH in the step one to the second mixed solution, and stirring so as to dissolve NaOH, thus obtaining a third mixed solution; step three, filling the third mixed solution in a reaction vessel, reacting for 4-6 hours at the temperature of 140-220 DEG C, and cooling to obtain a reaction product; step four, cleaning the reaction product in the step three with deionized water, precipitating, washing over and over again till filtrate is neutral, and then drying the reaction product so as to obtain the yttrium oxide doped nanometer fluorescent powder. The preparation method disclosed by the invention has the advantages that the production technology is simple, energy sources are saved, and needed equipment is simple and convenient for industrial production; the obtained product has high purity and good dispersity and is easy in control of particles size.

Description

technical field [0001] The invention relates to a preparation method of fluorescent powder, in particular to a preparation method of doped yttrium oxide nano fluorescent powder. Background technique [0002] Y 2 o 3 :Eu 3+ It is an important red phosphor. Because of its high luminous efficiency, high color purity and light decay characteristics, it has been widely used in energy-saving three-color fluorescent lamps. It is also used to prepare copy lamps and ultraviolet vacuum excited gas discharge color Displays the material of the board. For a long time, the high-temperature solid-state reaction method has been widely used at home and abroad to synthesize the phosphor, and the burning temperature is above 1300°C. The energy consumption is huge and the particle size of the product after burning is large. Ball milling is required to reduce the particle size to meet the process needs of powder coating. However, ball milling will destroy the crystal form of phosphor powder,...

AI Technical Summary

Problems solved by technology

The energy consumption is huge and the particle size of the product after burning is large. Ball milling is required to reduce the particle size to meet the process needs of powder coating. However, ball milling will destroy the crystal form of phosphor powder, resulting in a significant drop in luminosity and seriously affecting fluorescence. The performance of the powder

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