All-silica zeolite encapsulated ammonium phosphomolybdate resin, preparation method and application thereof, and adsorption method of Cs < + > in solution

The invention provides all-silica zeolite encapsulated ammonium phosphomolybdate resin, a preparation method and application thereof and a method for adsorbing Cs < + > in a solution, and belongs to the technical field of radiochemical analysis in nuclear fuel circulation. The preparation method comprises the following steps: mixing ammonium phosphomolybdate (AMP), tetraethyl silicate, tetrapropylammonium hydroxide and water, and pre-crystallizing to obtain a mixture; mixing the mixture with an NH4F aqueous solution for gelling to obtain gel; and carrying out hydrothermal reaction on the gel, and drying to obtain the all-silicon zeolite encapsulated ammonium phosphomolybdate resin. According to the preparation method of the all-silica zeolite encapsulated ammonium phosphomolybdate resin provided by the invention, the prepared resin is good in uniformity, AMP is uniformly dispersed in all-silica zeolite, and the resin has a very high specific surface area, so that enough sites are provided for adsorbing Cs, an