A method for preparing SrZr03:Ce nanometer
powder with a composite coprecipitator relates to a blue fluorescent
powder preparing method. Sr(NO3)2, ZrOC12 8H20 and CE(NO3)3 which are weighed according to accurate stoichiometric ratio are dissolved in
alcohol-water solution to be mixed into
metal salt solution with 0.01-1 ml / L concentration.
Ammonia water with 0.1-1 mol / L concentration and
ammonium bicarbonate with 0.1-0.5 mol / L concentration are adopted to serve as mixed precipitator, and
polyacrylamide (PAM) with 0.1-5*10-3mol / L is adopted to serve as dispersing agent. The mixed precipitator and the PAM dispersing agent are added into the
metal salt solution dropwise, precursor precipitate is obtained, and samples are obtained after aging, filtering, washing,
grinding, screening, calcining and ball-milling. SrZr03:Ce nanometer
powder obtained through the method is good in
dispersity, and average primary particle size is about 50 nm. In addition, the method for preparing SrZr03:Ce nanometer powder with the composite coprecipitator is simple in preparing process, short in period, low in cost and suitable for massive production.