title: A template-free, ultra-adsorbing, high surface area carbonate nanostructure.
abstract: We report the template-free, low-temperature synthesis of a stable, amorphous, and anhydrous magnesium carbonate nanostructure with pore sizes below 6 nm and a specific surface area of ∼ 800 m(2) g(-1), substantially surpassing the surface area of all previously described alkali earth metal carbonates. The moisture sorption of the novel nanostructure is featured by a unique set of properties including an adsorption capacity ∼50% larger than that of the hygroscopic zeolite-Y at low relative humidities and with the ability to retain more than 75% of the adsorbed water when the humidity is decreased from 95% to 5% at room temperature. These properties can be regenerated by heat treatment at temperatures below 100°C.The structure is foreseen to become useful in applications such as humidity control, as industrial adsorbents and filters, in drug delivery and catalysis.
authors.affiliation: Division for Nanotechnology and Functional Materials, Department of Engineering Sciences, The Ångström Laboratory, Uppsala University, Uppsala, Sweden. johan.frosgren@angstrom.uu.se
authors.forename: Johan
authors.initials: J
authors.lastname: Forsgren
authors.forename: Sara
authors.initials: S
authors.lastname: Frykstrand
authors.forename: Kathryn
authors.initials: K
authors.lastname: Grandfield
authors.forename: Albert
authors.initials: A
authors.lastname: Mihranyan
authors.forename: Maria
authors.initials: M
authors.lastname: Strømme
mesh_terms: D000327:Adsorption; D002254:Carbonates / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D049329:Nanostructures
chemical_list: D002254:Carbonates