Method for preparing carboxymethyl cellulose/nano-Prussian-blue composite gel microsphere adsorption material

The invention discloses a method for preparing a carboxymethyl cellulose/nano-Prussian-blue composite gel microsphere adsorption material. The method comprises the steps: (1) dissolving carboxymethyl cellulose and nano Prussian blue into deionized water, so as to obtain composite sol; (2) injecting the composite sol into an injector with a stainless steel needle, arranging injection conditions, dropwise dripping the composite sol into a metal salt solution by using an injection pump device, then, adding a cross-linking agent into the metal salt solution, and carrying out mixing and stirring, so as to obtain microspheres; (3) leaching the obtained microspheres in a suction filtration device by ultrapure water, and carrying out filtering and drying, thereby obtaining the carboxymethyl cellulose/nano-Prussian-blue composite gel microsphere adsorption material. The carboxymethyl cellulose/nano-Prussian-blue composite microsphere adsorption material prepared by the method has the characteristics of low cost, good