Gaseous iodine compounds especially radioactive iodine compounds such as \(\hbox {CH}_{3}\hbox {I}\) from nuclear spent fuel, once discharged, being destructive to the environment and harmful to human health are usually captured by solid adsorption. The faujasite (FAU) composed of Si, Al, and O elements is a kind of porous material with a high specific surface area usually used as an adsorbent and catalyst carrier. Excessive micropores in the skeleton of FAU hinder the diffusion of gas molecules to reduce the adsorption efficiency. In the NH \(_{4}\) F solution, the skeleton of FAU was selectively corroded by F \(^{-}\) ions and rearranged to form the construction with different the distribution of pore size. Ag-oxide nanoclusters were deposited inside the mesoporous and microporous pores of corroded FAU by the photoreduction method. To regulate the distribution of pore size, FAU deposited Ag-oxide nanocluster with more mesoporous and microporous pores providing more sufficient space for the diffusion of gaseous \(\hbox {CH}_{3}\hbox {I}\) presented more excellent adsorption performance.
