Highly efficient removal of arsenic(III) from aqueous solution by zeolitic imidazolate frameworks with different morphology

摘要: In this study, zeolitic imidazolate frameworks (ZIFs) sorbents with three different morphology (cubic ZIFs, leaf-shaped ZIFs and dodecahedral ZIFs) were successfully synthesized in aqueous solution via green methods at room temperature tested for removal of As(III). The are all high crystalline, a BET surface area 958.4, 12.7 1151.2 m(2)/g cubic respectively experiment revealed that adsorbents exhibited excellent adsorption capacities As(III) despite distinct specific morphology. isotherms generally fitted by Langmuir model the maximum 122.6, 108.1, 117.5 mg/g, pH 8.5. At initial concentration 200 mu g/L, was rapidly decreased to below 10 g/L 2 h adsorbent dosage 0.2 g/L. It found zinc hydroxyl substitution main complexation method onto evidenced FTIR XPS results. (C) 2015 Elsevier B.V. All rights reserved.