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

Abstract

Metal–organic gels (MOGs) of three-dimensional (3D) networks comprising nanosheets of ∼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.