Porous ZIF-8@polyacrylonitrile composite beads for iodine capture

Abstract

This article reports the preparation of a series of millimeter-sized ZIF-8@polyacrylonitrile composite beads with high specific surface area and porosity by the phase inversion method for iodine capture.

Iodine Capture with Metal-Functionalized Polyacrylonitrile Composite Beads Containing Ag0, Bi0, Cu0, or Sn0 Particles

“…It is unclear if similar options exist for recycling Bi-based, Cu-based, or Sn-based sorbents, but if these options do exist, it is unlikely that the benefits would outweigh the costs associated with these processes. Loading iodine into high-capacity sorbents such as metal–organic frameworks or conjugated microporous polymers provides more options for capture that also can have recycle options. − At some point, the final fate of the captured radioiodine needs to be considered and the ideal binding site for iodine is likely as a metal iodide that is chemically stable in a repository environment.…”

Iodine‐Chemisorption, Interpenetration and Polycatenation: Cationic MOFs and CPs from Group 13 Metal Halides and Di‐Pyridyl‐Linkers

“…Although the heavy iodide itself could not be moved, it can be utilized as a reactivity spot for a chemisorption of iodine vapor. The radioactive isotopes of iodine, 129 I and 131 I are harmful fission products in nuclear power plants [53] . If accidentally exposed to the environment, these isotopes have dangerous long‐term impacts to the eco system and, owing to the active involvement in metabolic processes, to human health [54] .…”

“…The radioactive isotopes of iodine, 129 I and 131 I are harmful fission products in nuclear power plants. [53] If accidentally exposed to the environment, these isotopes have dangerous long-term impacts to the eco system and, owing to the active involvement in metabolic processes, to human health. [54] This renders an effective capture of the highly volatile iodine isotopes via the gas phase highly important and a topic of great significance, for example in case of unwanted hazardous exposure of these isotopes.…”

Recent advances in the application of zeolitic imidazolate frameworks (ZIFs) in environmental remediation: a review

“…As the inevitable by-products during uranium and plutonium fission reactions, a great number of radioactive iodine (e.g., 129 I with long radioactive half-life (∼ several million years) and 131 I with short radioactive half-life (∼8 days)) were released from Fukushima accidents of nuclear power plant. 293 The accumulation of radioactive iodine in human body leads to mutagenic, teratogenic and carcinogenic effects; therefore, the developing novel Environmental Science: Nano Tutorial review functional nanomaterials with strong removal activity is of great importance for the treatment of radioactive iodine. 294 To date, the adsorption of I − or I 2 (g) on ZIFs has been investigated under different conditions.…”

“…, 129 I with long radioactive half-life (∼ several million years) and 131 I with short radioactive half-life (∼8 days)) were released from Fukushima accidents of nuclear power plant. 293 The accumulation of radioactive iodine in human body leads to mutagenic, teratogenic and carcinogenic effects; therefore, the developing novel functional nanomaterials with strong removal activity is of great importance for the treatment of radioactive iodine. 294…”