Self-assembly of 2D-metal–organic framework/graphene oxide membranes as highly efficient adsorbents for the removal of Cs⁺ from aqueous solutions

Abstract

A 2D-metal–organic frameworks/graphene oxide membrane that combines the electrostatic self-assembly of electronegative GO sheets and electropositive MOF sheets, which exhibits high mechanical flexibility, and superior Cs+ sorption, is presented.

Highly Efficient Uptake of Cs+ by Robust Layered Metal–Organic Frameworks with a Distinctive Ion Exchange Mechanism

“… 51 1 and 2 also outperform the commercial scavengers TAM-5 (197.8 mg/g); 52 a series of MOFs materials including [(CH 3 ) 2 NH 2 ][UO 2 (L 2 )]·0.5DMF·15H 2 O (about 145 mg/g; H 3 L = 3,5-di(4′-carboxylphenyl)benzoicacid), 25 SZ-6 (129 mg/g), 26 UiO-66-NH–SO 3 H-3 (233.4 mg/g), 28 and FJSM-InMOF (198.63 mg/g); 29 and MOF-based composite materials HKUST-1/KNiFC (153 mg/g) 53 and GO/Co-MOF (192.41 mg/g). 54 Additionally, the q m Cs values of 1 and 2 are remarkably higher than those of metal sulfides (KMS-1, 226 mg/g; 55 FJSM-SbS, 143.74 mg/g; 42 and FJSM-SnS-2, 266.5 mg/g 56 ) and oxide materials (MgAl 2.32 Si 5.2 O 14.88 ·18.23H 2 O, 102.34 mg/g; 57 SnSiMo, 16 mg/g; 58 and NaFeTiO, 52.8 mg/g 59 ). These results indicate that both compounds show a high adsorption capacity for Cs + ions.…”

Coarse-grained molecular dynamics simulations of nanoplastics interacting with a hydrophobic environment in aqueous solution

“…In a next step, renement of the model can be envisioned, e.g. to include more complex SOM models such as macromolecules 66,81,82 or to incorporate organic pollutants, heavy metals 83,84 and other compounds 85 bound to the NPs.…”

Metal–Organic-Framework-Derived Ball-Flower-like Porous Co3O4/Fe2O3 Heterostructure with Enhanced Visible-Light-Driven Photocatalytic Activity

“…As one of the most promising multi-functional materials, metal–organic frameworks (MOFs) are often considered to be novel photocatalysts due to their abundant and editable active sites and large surface area. However, some of their defects, such as poor light absorption and metal ion leaching due to an unstable structure, may seriously limit their practical applications [ 11 , 12 , 13 ]. In order to solve these problems, in this study, a flower-like cobalt 2,5-thiophenedicarboxylic coordination polymer (Co-TDC) was used as a template to synthesize a novel Co 3 O 4 /Fe 2 O 3 heterostructural photocatalyst with improved light harvesting and photocatalytic performance.…”