Iodine-gulping MOFs

A metal-organic framework that can adsorb one and a fourth of its weight in molecular iodine could be useful in clean-up of radioactive gas after a nuclear or terrorist "dirty bomb" release incident, according to research from the US. Tina Nenoff of Sandia National Laboratories in Albuquerque, New Mexico, and colleagues demonstrated how the zeolitic imidazolate framework-8 (ZIF-8) can permanently trap large volumes of iodine vapor. Current materials for sequestering radioactive iodine have a capacity an order of magnitude lower than this MOF, the team says.