Rapid adsorptive removal of cationic and anionic dyes from aqueous solution by a Ce(III)-doped Zr-based metal–organic framework

Synthesis, characterization and application of defective metal–organic frameworks: current status and perspectives

“…The defect-induced active sites in MOFs, together with their high porosity make these materials promising in the eld of decontamination. The decontamination of chemical warfare agents (CWAs) 24,[133][134][135] and the adsorption of pollutants (e.g., organoarsenic compounds 11,136 and dyes 137,138 and gas pollutants 6,7,31,83,97,139,140 ) have been widely investigated with the use of defective MOFs. Recently, zirconium-based MOFs (Zr-MOFs) with open metal sites and excellent stability have not only shown efficient uptake of CWAs but also enhanced the chemical detoxication of organophosphorus-based CWAs in a hydrolysis reaction.…”

“…144 When using defective MOFs for the adsorption of organic dyes and organoarsenic compounds, the pore size, the number of defects, and electronegativity of the defective MOFs are of great importance in determining the adsorption performance. 137,144,145 Furthermore, surface alkalinity of the defective UiO-66 has a notable effect on its selective adsorption for cationic dyes (rhodamine B (RhB) and ST) with similar sizes. 146 Alkaline N-compound (pyrrole, dopamine, and 2-methylimidazole) coordination was proved to simultaneously modulate pore sizes and intensify surface alkalinity of the original UiO-66 (Fig.…”

Fabrication of UiO-66/MIL-101(Fe) binary MOF/carboxylated-GO composite for adsorptive removal of methylene blue dye from aqueous solutions

“…Table 5 represented a comparison between the developed composite and some recently reported adsorbents. [65][66][67][68][69][70][71][72][73] It was clear from results that UiO-66/MIL-101(Fe)-GOCOOH exhibited higher adsorption capacity for the adsorptive removal of cationic MB dye (448.7 mg g À1 ) compared with the other adsorbents. The high adsorption capacity could be a result of the successful combination between GOCOOH and UiO-66/MIL-101(Fe).…”

A Critical Review on Metal-Organic Frameworks and Their Composites as Advanced Materials for Adsorption and Photocatalytic Degradation of Emerging Organic Pollutants from Wastewater

“…More so, they have shown higher adsorption capacities than other conventional adsorbents. For example, UiO-67(Zr) was able to achieve an equilibrium adsorption capacity of 799 mg g −1 , for Congo red adsorption [ 98 ]. Adsorption capacity with (q e ) value of 1045 mg g −1 was achieved for the adsorption of methylene blue by MIL-100(Fe) [ 99 ].…”