Porous framework materials and their composites for iodine capture: a review

Abstract

Iodine is an essential component of thyroid hormones. Once radioactive iodine is inhaled or ingested, it will specifically accumulate in the thyroid gland and be amplified in the food chain; the continuous exposure to radioactive iodine can induce cancer. Therefore, it must be adsorbed and retained before entering the environment. Accordingly, researchers have designed and synthesized a series of multifunctional porous framework materials, such as metal organic frameworks, porous organic frameworks and their composite materials. This type of material is regarded as the most promising radioactive iodine treatment material due to its extremely high specific surface area, rigid skeleton structure, adjustable porosity, easy modification properties and strong adsorption capacity. This study comprehensively summarizes porous framework materials and their composites that are used for capturing radioactive iodine.