Acyl amide-functionalized and water-stable iron-based MOF for rapid and selective dye removal

Ghasempour, Hosein; Zarekarizi, Farnoosh; Morsali, Ali

doi:10.1039/d2ce00369d

Cited by 20 publications

(9 citation statements)

References 46 publications

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“…48 Therefore, from the above changes, we speculate that chemical interactions (H-bonding, weak interactions, and π–π stacking) and electrostatic interactions are present in the adsorption of 3 on CR dye. 49,50…”

Section: Resultsmentioning

confidence: 99%

“…48 Therefore, from the above changes, we speculate that chemical interactions (H-bonding, weak interactions, and π-π stacking) and electrostatic interactions are present in the adsorption of 3 on CR dye. 49,50 3.5.3 Specific surface area of MOF 3 and its pore size distribution. It is well-known that the various sizes of pores…”

Section: Recycling Of the Adsorbentmentioning

confidence: 99%

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Three novel Co(ii)-based MOFs: syntheses, structural diversity, and adsorption properties

et al. 2022

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Section: Resultsmentioning

confidence: 99%

Section: Recycling Of the Adsorbentmentioning

confidence: 99%

Three novel Co(ii)-based MOFs: syntheses, structural diversity, and adsorption properties

et al. 2022

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“…Among them, the adsorption technology has attracted much attention due to its high efficiency, reliability, simple operation, and economic feasibility. Activated carbon, ion exchange resins, natural zeolites, organic framework materials, , clay minerals, magnetic clay–carbon black, chitosan, and fiber material are widely used in adsorption technology.…”

Section: Introductionmentioning

confidence: 99%

Designed Construction of 2D Honeycomb Cationic MOF Materials for Selective Removal of Sulfonic Anionic Dyes

Wang

et al. 2023

Langmuir

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Various carcinogenic dyes in water bodies are difficult to degrade due to their stability to light and oxidants, causing extended pollution. In this study, MOF 1 ({[Co(tib)2]·(H2O)2·SO4} n ) and MOF 2 ({[Cu(tib)2]·(H2O)2·SO4} n ) (tib = 1,3,5-tirs(1-imidazolyl)benzene) were synthesized by the solvothermal method. MOFs 1 and 2 were successfully characterized by single-crystal X-ray diffraction (XRD) and powder X-ray diffraction (PXRD). Based on the structural characteristics of MOFs 1 and 2, we designed two cationic MOF material skeletons, namely, MOFs I and II ([Co(tib)2 2+] n and [Cu(tib)2 2+] n ), which were obtained by calcination in combination with the thermogravimetric curve to remove the free components in the lattice. As expected, MOFs I and II showed an excellent adsorption effect on sulfonic anionic dyes. Notably, the adsorption capacity of MOF I can reach 2922.8 mg g–1 for Congo Red (CR) at room temperature (RT). The adsorption process fits the pseudo-second-order kinetic model and Freundlich isotherm model. Moreover, zeta potential tests and quantum chemical calculations indicate that electrostatic interactions and hydrogen bond between the hydroxyl group on the sulfonic acid group and the N atom on the imidazole ring mainly promote the adsorption of CR dyes on MOF I. MOFs I and II are revealed as a promising novel adsorption material to remove hazardous organic aromatic pollutants with high efficiency in future endeavors.

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“…[29] This material has porosity and a large specific surface area. [22,24,26,30] Therefore, MOFs are regarded as excellent adsorbents for removing dyes from wastewater. [31] According to previous literature, [32] there were many kinds of metal ligands in most MOFs, such as iron-based MOFs, [33] aluminum-based MOFs, [34] zinc-based MOFs, [1] copper-based MOFs, [35] etc.…”

Section: Introductionmentioning

confidence: 99%

“…The metal‐organic framework is a kind of material with a grid structure, which is bridged by organic ligands and metal ions or clusters [29] . This material has porosity and a large specific surface area [22,24,26,30] . Therefore, MOFs are regarded as excellent adsorbents for removing dyes from wastewater [31] .…”

Section: Introductionmentioning

confidence: 99%

Effective Removal of Congo Red from Water using Chitosan@UiO‐67 Hydrogel Spheres: Synthesis, Characterization and Adsorption Mechanisms

Jing

Zhang

et al. 2023

ChemistrySelect

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The effects of temperature, initial CR concentration, contact time, pH, and adsorbent dose on the adsorption properties of CS@UiO-67 hydrogel were studied in batch adsorption experiments. FT-IR analysis showed that the hydroxyl group of chitosan had covalent coordination with Zr, which enhanced the stability of chitosan after complexation with UiO-67. As for the adsorption experiment, the maximum adsorption capacity of the adsorbent calculated by the Langmuir model was 1001.2 mg ⋅ g À 1 at room temperature (301 K). Kinetic analysis showed that the adsorption of congo red on CS@UiO-67 hydrogel conformed to the pseudo-secondorder model. The adsorption process accorded with the Langmuir model by isotherm analysis. Thermodynamic analysis showed that the adsorption process was spontaneous and exothermic. The adsorption of CR on CS@UiO-67 hydrogel spheres was mainly attributed to electrostatic attraction, hydrogen bonds, and π-π bonds. After four cycles of regeneration, the material removal rate can still reach about 65 %. The new adsorbent has good application prospects.

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Acyl amide-functionalized and water-stable iron-based MOF for rapid and selective dye removal

Abstract: Multinuclear cluster-based metal-organic frameworks (MOFs) have shown excellent activity in toxic chemical removal from wastewater due to their high porosity, functionality and water stability. In this regard, a highly porous...

Cited by 20 publications

References 46 publications

Three novel Co(ii)-based MOFs: syntheses, structural diversity, and adsorption properties

Three novel Co(ii)-based MOFs: syntheses, structural diversity, and adsorption properties

Designed Construction of 2D Honeycomb Cationic MOF Materials for Selective Removal of Sulfonic Anionic Dyes

Effective Removal of Congo Red from Water using Chitosan@UiO‐67 Hydrogel Spheres: Synthesis, Characterization and Adsorption Mechanisms

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