Metal-Organic Frameworks Bearing Dense Alkyl Thiol for the Efficient Degradation and Concomitant Removal of Toxic Cr(VI).

Highly efficient removal of toxic Cr(VI) from aqueous media remains a crucial concern for ecosystem protection and public health. Herein, we demonstrated a new approach to solve this issue by constructing alkyl thiol-containing Zr-based metal-organic framework (MOF) adsorbents using simple and inexpensive mercaptosuccinic acid (MSA) and -dimercaptosuccinic acid (DMSA) as ligands. These chemically stable MOFs could be prepared in an uncomplicated, green, cost-effective, and scalable way.

A robust MOF-based trap with high-density active alkyl thiol for the super-efficient capture of mercury.

The first Zr-based metal-organic frameworks (MOFs) with high-density active alkyl thiol were successfully constructed in an aqueous phase. Thanks to the strong affinity between alkyl thiol and Hg2+ ions, the robust MOFs feature high adsorption capacity (734 mg g-1), ultra-fast kinetics (removing 99.99% Hg2+ in 5 min), super-high capture efficiency (dropping Hg2+ concentration from 10 000 ppb to 0.