Five functional Cd/Zn-based MOFs constructed from V-shaped tricarboxylate ligand for rapidly selective adsorption and efficiently photocatalytic degradation of hazardous aromatic dyes

Wu, Ruixue; Bi, Caifeng; Wang, Lulu; Wang, Jinmiao; Fan, Chuanbin; Li, Nana; Wang, Mei; Shao, Feng; Chen, Guobo; Yu, Fan

doi:10.1016/j.synthmet.2021.116786

Cited by 11 publications

(3 citation statements)

References 47 publications

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“…Although the hydrodynamic radius of the MO molecule is quite similar to that of the MB molecule, the color of the solution can be seen to change from grassy green to yellow, which is the inherent color of MO. The phenomenon is similar to those in the literature, , which indicates that the interaction between dyes does not affect the final adsorption performance of the adsorbent MIL-100. And the results illustrated that the MIL-100 could separate the specific cation dye MB from the mixture solution of MB and MO.…”

Section: Resultssupporting

confidence: 89%

Insights into High-Performance and Selective Elimination of Cationic Dye from Multicomponent Systems by Using Fe-Based Metal–Organic Frameworks

et al. 2022

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Metal−organic frameworks (MOFs), especially Fe-MOFs, have shown prospective application in eliminating organic dyes from wastewater due to their well-developed pores, water stability, easy preparation, and economy. Herein, we synthesized four types of Fe-MOFs (such as MIL-88A, MIL-88B, MIL-100, and MIL-101) using the hydrothermal method. The products were analyzed with several methods. By comparing the adsorption effect of those four types of Fe-MOFs on three kinds of dyes, it has been shown that MIL-100 owns the best adsorption efficiency on cationic organic dyes methylene blue (MB) and Rhodamine B (RhB) in 180 min, while all MOFs have slight removal capacity on methyl orange (MO). MIL-100, as an adsorbent, was studied under various research conditions, and the maximum removal efficiencies to MB, RhB, and MO were found to be up to 97.36%, 88.75%, and 13.00%, respectively. Furthermore, cationic dye MB's removal by MIL-100 was fitted with a pseudo-second-order model and Langmuir isotherm model (Q m = 411.041 mg/g) by adsorption kinetics and isotherms research, and MIL-100 could rapidly and selectively divide MB from a binary complex aqueous solution of MB and MO. The as-fabricated MIL-100 also exhibited excellent recyclability after four adsorption−desorption recycles and can be treated as a potential substance with high removal efficiency of cationic organic dye-containing industrial effluents.

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Section: Resultssupporting

confidence: 89%

Insights into High-Performance and Selective Elimination of Cationic Dye from Multicomponent Systems by Using Fe-Based Metal–Organic Frameworks

et al. 2022

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“…There exist many exposed active sites and centers in the 2D MOF layered structures of LCUH - 101 (Eu, Gd, Tb, and Y), so that some dye molecules are easily inserted into their interlayers and generate intermolecular forces in the process of dye adsorption. − Therefore, the above characteristic inspired us to study the adsorption property of dyes with different charges and sizes (Figure S9 and Table S8). Three common organic dyes (i.e., MB, RhB, and MO) are selected to assess the adsorption ability of LCUH - 101 (Eu, Gd, Tb, and Y) in the removal of organic dye process.…”

Section: Resultsmentioning

confidence: 99%

Series of Dual Functional Two-Dimensional RE-OFs for Nitrophenol Reduction and Dye Separation

et al. 2023

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The rational design and preparation of stable and multifunctional metal–organic frameworks (MOFs) with excellent catalysis and adsorption properties are desirable but are great challenges. The nitrophenol (NP) reduction to aminophenols (APs) by using the catalyst Pd@MOFs is an effective strategy, which has attracted extensive attention in recent years. Here, we report four stable isostructural two-dimensional (2D) rare earth metal–organic frameworks [RE4(AAPA)6(DMA)2 (H2O)4][DMA]3[H2O]8 (namely LCUH-101, RE = Eu, Gd, Tb, Y; AAPA2– = 5-[(anthracen-9-yl-methyl)-amino]-1,3-isophthalate), which feature a 2D layer structure with sql topology of point symbol {44·62} and exhibit excellent chemical stability and thermostability. The as-synthesized Pd@LCUH-101 was utilized for the catalytic reduction of 2/3/4-nitrophenol, which indicates high catalytic activity and recyclability attributed to the synergistic effect between Pd nanoparticles and the 2D layered structure. Of note, the turnover frequency (TOF), the reaction rate constant (k), and the activation energy (E a) of Pd@LCUH-101 (Eu) in the reduction of 4-NP, respectively, are 1.09 s–1, 2.17 min–1, and 50.2 kJ·mol–1, which show that it has superior catalytic activity. Remarkably, LCUH-101 (Eu, Gd, Tb, and Y) are multifunctional MOFs that can effectively absorb and separate mixed dyes. The appropriate interlayer spacing enables them to efficiently adsorb methylene blue (MB) and rhodamine B (RhB) in aqueous solution, with adsorption capacities of 0.97 and 0.41 g·g–1, respectively, which is one of the highest values among those of the reported MOF-based adsorbers. Meanwhile, LCUH-101 (Eu) can be used for the separation of the dye mixture MB/MO and RhB/MO, and the excellent reusability enables LCUH-101 (Eu) to be used as chromatographic column filters to quickly separate and recover dyes. Therefore, this work provides a new strategy for the exploitation of stable and efficient catalysts for NP reduction and adsorbents for dyes.

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“…So, in this work, the ability of TMU-16 for significant photocatalytic degradation of Congo red (CR). Furthermore, researchers [110][111][112] reported strong adsorption of CR, which influences the degradation process and results in a negligible or prolonged degradation rate. The amino groups in CR achieved the adsorption of CR onto the catalyst as both donors and acceptors of electrons, enabling H-bonds to form between the amino organic dye and the uncoordinated O atoms of carboxyl groups in MOFs [112].…”

Section: Other Dyesmentioning

confidence: 99%

Revolutionizing Wastewater Treatment: Harnessing Metal–Organic Frameworks for Exceptional Photocatalytic Degradation of Azo-Type Dyes

Barrera-Andrade,

de la Fuente-Maldonado,

Lopez-Medina

et al. 2023

Colorants

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Due to the high stability of azo-type dyes, conventional treatment processes such as adsorption, flocculation, and activated sludge are not efficient for decolorizing wastewater effluents. An alternative to traditional wastewater treatment is photocatalysis, which has gained significant interest because research has shown it to be a viable and cost-effective process that uses sunlight as an inexhaustible energy source. In heterogeneous photocatalysis, a photocatalyst is required, such as TiO2, ZnO, composite materials, and, more recently, metal–organic frameworks (MOFs). MOFs, also known as “coordination polymers”, exhibit photocatalytic properties and have been proven to be promising materials in the photocatalytic degradation of dyes. This study presents recent advances in using MOFs as photocatalysts to degrade recalcitrant contaminants like azo-type dyes. Recent advancements in developing photocatalysts based on MOFs are focused on two strategies. Firstly, the development of new MOFs composed of complex ligands or a mixed ligand system, and secondly, the synthesis of composite materials based on MOFs and metal oxides, metals, sulfides, nitrides, etc. Both strategies have significantly contributed to the search for new semiconductors to degrade some recalcitrate contaminants in wastewater.

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Five functional Cd/Zn-based MOFs constructed from V-shaped tricarboxylate ligand for rapidly selective adsorption and efficiently photocatalytic degradation of hazardous aromatic dyes

Cited by 11 publications

References 47 publications

Insights into High-Performance and Selective Elimination of Cationic Dye from Multicomponent Systems by Using Fe-Based Metal–Organic Frameworks

Insights into High-Performance and Selective Elimination of Cationic Dye from Multicomponent Systems by Using Fe-Based Metal–Organic Frameworks

Series of Dual Functional Two-Dimensional RE-OFs for Nitrophenol Reduction and Dye Separation

Revolutionizing Wastewater Treatment: Harnessing Metal–Organic Frameworks for Exceptional Photocatalytic Degradation of Azo-Type Dyes

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