期刊
MICROPOROUS AND MESOPOROUS MATERIALS
卷 221, 期 -, 页码 238-244出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.micromeso.2015.09.043
关键词
Metal organic frameworks; Chemical synthesis; Heavy metal adsorption
类别
资金
- Imperial College London
- International Research Support Initiative Program of Higher Education Commission, Pakistan
- EPSRC [EP/K039946/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/K039946/1] Funding Source: researchfish
The metal organic framework UiO-66-NH2 has been post-synthetically modified to introduce thiourea, isothiocyanate and isocyanate functionalities without compromising the structural and thermal stability of the parent framework. H-1 NMR and IR spectroscopies have been used to monitor the extent of framework functionalization. UiO-66, UiO-66-NH2 and the new functionalized frameworks UiO-66-NHC(S)NHMe, UiO-66-NHC(S)NHPh, UiO-66-NCS and UiO-66-NCO have been studied as adsorbents for the capture of a range of heavy metals from homoionic aqueous solution, with a view towards applications in environmental remediation. Functionalization markedly improved metal removal efficiency up to 99% with calculated maximum adsorption capacities of 49, 117, 232 and 769 mg/g for Cd2+, Cr3+, Pb2+ and Hg2+ respectively for UiO-66-NHC(S)NHMe. (C) 2015 Elsevier Inc. All rights reserved.
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