MOFs for Mercury Detection: Comparison
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The advantages of metal organic frameworks (MOFs) are: existence of porosity to adsorb specific analyte, improved aqueous solubility, exceptional photophysical and chemical properties. MOFs are noted as exceptional candidates towards the detection and removal of specific analytes, particular for the detection/removal of environmental contaminants, such as heavy metal ions, toxic anions, hazardous gases, explosives, etc. Among heavy metal ions, mercury has been noted as a global hazard because of its high toxicity in the elemental (Hg0), divalent cationic (Hg2+), and methyl mercury (CH3Hg+) forms. To secure the environment and living organisms, many countries have imposed stringent regulations to monitor mercury at all costs. Regarding the detection/removal requirements of mercury, researchers have proposed and reported all kinds of MOFs-based luminescent/non-luminescent probes towards mercury.This review provides valuable information about the MOFs which have been engaged in detection and removal of elemental mercury and Hg2+ ions. Moreover, the involved mechanisms or adsorption isotherms related to sensors or removal studies are clarified for the readers. Finally, advantages and limitations of MOFs in mercury detection/removal are described together with future scopes.

  • Hg2+
  • CH3Hg+
  • elemental mercury
  • MOFs
  • luminescent detection
  • adsorption isotherms
  • real analysis
  • non-luminescent probes
  • organic linkers
  • metal nodes
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