The article discusses the innovative application of silver-zeolites in enhancing safety measures in nuclear reactors during severe accidents. Filtered Containment Venting Systems (FCVS) are crucial components to prevent the release of radionuclides into the atmosphere during nuclear reactor accidents. Zeolites doped with silver, known as Ag-zeolites, have been effectively utilized in FCVS to retain gas phase iodine compounds, especially challenging organic iodides. These materials have shown efficiency in capturing and retaining iodine species through chemical reactions within the zeolite structure. Additionally, silver in Ag-zeolites serves as a catalyst for the hydrogen recombination reaction, lowering the activation energy needed for the reaction and enhancing safety in reactor containments by reducing hydrogen risks. While platinum or palladium are commonly used as catalysts for hydrogen recombination, the novel application of silver-zeolites presents a dual-purpose solution by simultaneously addressing iodine retention and hydrogen recombination. Experimental characterization of two Ag-zeolites has demonstrated their capability to retain organic gas phase iodides and catalyze hydrogen recombination, showcasing promising results under challenging conditions. The article highlights the potential of silver-zeolites in advancing nuclear reactor safety measures by offering a comprehensive solution for iodine retention and hydrogen risk reduction, ultimately enhancing the overall safety and efficiency of nuclear power plants.