Method for efficiently separating rubidium and cesium through adsorption

The invention discloses a method for efficiently separating rubidium and cesium through adsorption. The method comprises the following steps that a solution containing the cesium and the rubidium is mixed with an adsorbent, and the cesium and the rubidium are separated according to the difference of adsorption rates of the adsorbent on the cesium and the rubidium, wherein the adsorbent is prepared by loading a supramolecular compound as shown in a structural formula (I) on a metal organic framework material as shown in a structural formula (II). The adsorbent adopted by the method has a strong adsorption effect on a rubidium element, and the cesium and the rubidium can be separated; the adsorbent hardly adsorbs other metal elements, so that the adsorption separation effect is good; according to the method, the rubidium can be separated from the solution under the condition that symbiotic elements are contained; and the method is mild in condition, good in selectivity, high in separation speed, simple to opera