With the aim of designing and preparing the materials based on polyoxometalates (POMs) and the metal-organic frameworks (MOFs) toward desired applications,a facile approach was developed to incorporate the clusters of Mo7O246-(Mo7),a representative isopolyoxometalate,into the vacant cages of ZIF-8.Through the so-called strategy of building MOF bottles around the POM ships,the powdered crystals and crystalline membrane of Mo7@ZIF-8 were synthesized,respectively.The products were characterized by IR,PXRD,N2 adsorption,and SEM.The Mo7@ZIF-8 crystals could effectively adsorb malachite green (MG) from water,and the maximum adsorption capacity reached 1963 mg.g-1.The Mo7@ZIF-8 crystals could also be used for selectively adsorbing MG from the mixed dye solution containing MG and methyl orange (MO).Moreover,the Mo7@ZIF-8 membrane exhibited the proton conductivity of 9.5 × 10-2 Scm-1 at 75 ℃ under 98％ relative humidity.