Mesoporous silica gel loaded with nanoparticles of Prussian blue and analogues thereof, and preparation and application thereof

Abstract

The invention discloses a mesoporous silica gel loaded with nanoparticles of Prussian blue and analogues thereof, and preparation and an application thereof. The hybrid mesoporous silica gel loaded with the nanoparticles of Prussian blue and the analogues thereof is successfully synthesized; the problem of immobilization of Prussian blue and the analogues thereof, the problem of elution after adsorption and the problem of separation of different alkali metal ions are solved; the hybrid mesoporous silica gel has good selectivity to Rb<+> and Cs<+>; in the presence of a large number of K<+>, thehybrid mesoporous silica gel still has a good effect on extraction of rubidium and cesium, can well separate rubidium, cesium and potassium, and is expected to be used for separating and extracting rubidium and cesium from brine of salt lakes.

Description

technical field [0001] The invention relates to the technical field of adsorption materials, in particular to a hybrid mesoporous silica gel adsorption material and a preparation method thereof, and the application of the material in the separation and extraction of trace amounts of rubidium and cesium. Background technique [0002] Rubidium and cesium are important strategic resources and have broad application prospects in atomic clocks, solar cells, electronic devices, catalysts, and biomedicine. Although my country is rich in rubidium and cesium resources, most of them exist in salt lake brines in Qinghai, Tibet and other places. Due to the low content of rubidium and cesium, and the high content of associated elements such as potassium and sodium with similar properties, it is very difficult to extract rubidium and cesium from salt lake brine. The development level of salt lake brine in the traditional process is low, the product is single, and a large amount of rubidi...

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Problems solved by technology

[0008] The purpose of the present invention is to address the defects of the prior art, synthesize a kind of mesoporous silica gel composite material loaded with Prussian blue and analog nanoparticles, to solve the problem of solid loading of Prussian blue and analog, the elution problem after adsorption and Separation of different alkali metal ions, providing high-performance adsorption materials for the selective extraction of rubidium and cesium from salt lake brine

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