Selective sequestration of heavy metals and radionuclide from water by layered metal chalcophosphate

Abstract

Layered inorganic solids and intercalation chemistry Bulk layered materials have been studied extensively in the past several decades because of their unique structural features, and physical and chemical properties.[1] Materials with layered structures remain an extensively investigated subject in current chemistry and physics due to their interesting properties. The rich family of layered materials consists of singleelement crystals, such as graphite, phosphorus, arsenic, antimony and bismuth, silicates, hydroxides, transition metal chalcogenides and many oxides.[2,3] The valuable properties of layered inorganic solids and the possibility of modification by various post-synthesis treatments have attracted a lot of attention for many years. Layered materials typically exhibit strong in-plane covalent bonding and weak out-of-plane van der Waals interactions through the interlayer gap.