Journal
JOURNAL OF SOLID STATE CHEMISTRY
Volume 269, Issue -, Pages 558-565Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2018.10.028
Keywords
MIL-101(Fe); Bismuth; Iodide; Adsorption; MOFs
Funding
- Foundation of Henan Scientific and Technological Committee [182102210420]
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To improve the uptake effect of iodide anions from aqueous solution, mesoporous Fe-based MOFs (Bi@MIL) were prepared by mixing Bi(III) and MIL-101(Fe) in Teflon-lined autoclave using solvothermal synthetic method. The Bi@MIL adsorbents were characterized by IR, XRD, SEM, BET and XPS, indicating the crystal structure of MIL-101(Fe) remained when the addition of Bi(III) species in the synthesis of Bi@MIL was below 5.0%. When the amount of Bi(III) reached 15.0%, mesoporous Fe-based MOFs was obtained. Bi@MIL composites displayed fast adsorption kinetics and the adsorption equilibrium was achieved in 20 min in 200 mg L-1 of iodide anions solution concentration at neutral medium. The pH of solution could affect adsorption of iodide anions and the maximum adsorption capacities occurred at pH 3.
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