Selective adsorption of arsenate and the reversible structure transformation of the mesoporous metal–organic framework MIL-100(Fe)

Abstract

Here we describe a highly porous metal–organic framework MIL-100(Fe), which is initially used as an arsenate adsorbent in water. An appropriate mesoporous size allows AsO₄³⁻ to enter unrestrained and then be captured successfully, furthermore resulting in the damage of long-range order of uniform mesopores. Moreover, the porous framework could also make AsO₄³⁻ be reversibly desorbed without structural changes and the long-range order of mesopores be recovered again.