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Fe 3 O 4 @MIL‐101 – A Selective and Regenerable Adsorbent for the Removal of As Species from Water
Author(s) -
Folens Karel,
Leus Karen,
Nicomel Nina Ricci,
Meledina Maria,
Turner Stuart,
Van Tendeloo Gustaaf,
Laing Gijs Du,
Van Der Voort Pascal
Publication year - 2016
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201600160
Subject(s) - chemistry , arsenate , arsenite , adsorption , nanomaterials , phosphate , desorption , inorganic chemistry , selectivity , leaching (pedology) , arsenic , chromium , environmental chemistry , nuclear chemistry , chemical engineering , organic chemistry , catalysis , environmental science , soil science , engineering , soil water
The chromium‐based metal–organic framework MIL‐101(Cr) served as a host for the in situ synthesis of Fe 3 O 4 nanoparticles. This hybrid nanomaterial was tested as an adsorbent for arsenite and arsenate species in groundwater and surface water and showed excellent affinity towards As III and As V species. The adsorption capacities of 121.5 and 80.0 mg g –1 for arsenite and arsenate species, respectively, are unprecedented. The presence of Ca 2+ , Mg 2+ , and phosphate ions and natural organic matter does not affect the removal efficiency or the selectivity. The structural integrity of the hybrid nanomaterial was maintained during the adsorption process and even after desorption through phosphate elution. Additionally, no significant leaching of Cr or Fe species was observed.