Green environment-friendly method for preparing BCNO fluorescent powder

The invention relates to a green environment-friendly method for preparing BCNO fluorescent powder, which comprises the following steps: 1) adding deionized water into a reactor, and heating to 90-100 DEG C; adding boric acid and melamine, and stirring for 1 hour until the solution becomes clear; 2) slowly adding glucose into the solution obtained in the step 1), stirring the solution for 5 hours, pouring the solution into another reactor, and heating until water is evaporated to dryness, thereby obtaining a BCNO precursor; 3) taking out the BCNO precursor, putting the BCNO precursor in a muffle furnace, and sintering at 600-700 DEG C for 20 hours; and 4) after finishing the sintering, naturally cooling, and sufficiently grinding to obtain the BCNO fluorescent powder. The equipment used in the invention is the common muffle furnace, and thus, is simple and cheap; the method is simple and easy to implement, and is non-toxic and pollution-free; the emission spectrum is adjustable within the range of visible light; and the BCNO fluorescent powder is not sensitive to sintering time, has high repetitiveness, and can easily implement mass production.

本发明涉及一种制备BCNO荧光粉的绿色环保方法，包括以下步骤：1)在反应器中加入去离子水，加热至90 - 100℃；加入硼酸和三聚氰胺，搅拌1小时直至溶液变澄清；2)向步骤1)所得溶液中缓慢加入葡萄糖，搅拌溶液5小时，将溶液倒入另一个反应器中，加热直至水分蒸发干，从而得到BCNO前驱体；3)取出BCNO前驱体，将其放入马弗炉中，在600 - 700℃下烧结20小时；4)烧结完成后，自然冷却，并充分研磨以获得BCNO荧光粉。本发明所使用的设备是普通的马弗炉，因此简单且价格低廉；该方法简单易行，无毒无污染；发射光谱在可见光范围内可调节；并且BCNO荧光粉对烧结时间不敏感，重复性高，能够容易地实现大规模生产。