Nitrate sorption by thermally activated Mg/Al chloride hydrotalcite-like compound

Anion Selectivity of Layered Double Hydroxides: Effects of Crystallinity and Charge Density

“…Actually, some studies have reported the potential use of LDHs as adsorbents or reservoirs of nitrate. [9,10,[13][14][15][16][17][18] However, the selectivity of LDHs for nitrate is generally considered not to be high, and a large number of studies have reported that anions with a higher charge density tend to be more preferentially intercalated into LDHs. [6][7][8]19,20] According to a report by Miyata, [19] the order of exchange selectivity for monovalent anions in the case of Mg-Al LDHs (Mg/ Al = 2.3) is OH -> F -> Cl -> Br -> NO 3 -> I -, and according to a report by Costa et al, [20] the order of exchange selectivity based on a computational simulation with Zn-Al LDHs (Zn/Al = 2) is CO 3 2-> OH -> F -> Cl -> Br -> NO 3 -.…”

Study on the release behavior and mechanism by monitoring the morphology changes of the large-sized drug-LDH nanohybrids

“…1 have exhibited extensive research interest in a number of areas, such as catalysis, [4][5][6] adsorption, 7,8 ion exchange, 4,9 and especially in drug delivery system as a novel biomaterials 1,[10][11][12] due to their low cost, ease of preparation, ion-exchange property, low cytotoxicity, and high biocompatibility. 1,13,14 Ambrogi et al 10 reported that the loosely flocculated ibuprofen (IBU)-intercalated Mg-Al-LDH nanoparticles (\200 nm) obtained by ion-exchange with chloride intercalated Mg-Al-LDH precursor showed almost 80% of IBU released only after 30 min ascribed to a dissolution mechanism.…”

Production of added-value materials from a hazardous waste in the aluminium tertiary industry: Synergistic effect between hydrotalcites and glasses

“…[14][15][16][17] or the removal of organic dyes, toxic metals and anions present in wastewaters such as NO 3 À , Cr(VI), Mo(VI), As(V), Se(VI), Pb(II), etc. [18][19][20][21][22][23].…”