Iron-naphthalenedicarboxylic acid gels and their high efficiency in removing arsenic(v)

Metal-organic gels (MOGs) of three-dimensional (3D) networks comprising nanosheets of similar to 30 nm thickness and square-micrometer in size were easily produced via coordination interactions of iron (Fe3+) and 1,4-naphthalenedicarboxylic acid (NDC). Such MOGs exhibit ultrahigh removal of arsenic(v) in water, with the adsorption capacity of 144 mg g(-1), dramatically superior to those of the recently reported Fe-based inorganic and organic adsorbents.