Construction strategies to modulate the photocatalytic efficiency of Cd(<scp>ii</scp>) MOFs to photodegrade organic dyes

Xiong, Min; Wu, Jian; Lu, Lu; Wang, Jun; Zhang, Wei; Guo, Jin‐Chang; Singh, Amita; Kumar, Abhinav; Muddassir, Mohd.

doi:10.1039/d2ce01281b

Cited by 7 publications

(1 citation statement)

References 82 publications

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“…Metal–organic frameworks (MOFs) are a class of crystalline three-dimensional highly porous materials synthesized from metal ions and polyfunctional ligands. MOFs have a high surface area, tunable coordination sites, and high thermal and chemical stability. , Due to these properties MOFs have been used in catalysis, − biomedicine, − electrochemical applications, gas recovery and storage − as well as for the adsorption − and photodegradation − of various organic contaminants. Tunable coordination space and cavities of MOFs make them potential materials for the encapsulation of metal ions .…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient Cauliflower-like Palladium-Loaded Porous MOF as a Robust Material for the Degradation of Organic Dyes

Rimi,

Kumar,

Uttam

et al. 2023

ACS Omega

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x = 2, 5, and 10%) were synthesized by loading varying concentrations of Pd(II) on IRMOF-9. The synthesized MOF materials were characterized by ltravioletisible (UV−Vis) spectroscopy, Fourier transform Infrared (FT-IR) spectroscopy, powder X-ray diffraction (PXRD), Brunauer−Emmett−Teller (BET), and scanning electron microscopy (SEM) analyses. UV, FT-IR, and PXRD data of Pd(II)@IRMOF-9 were found to be in line with those of IRMOF-9, which suggests that the structure of the IRMOF-9 remained intact upon Pd(II) loading. Surface morphology of IRMOF-9 showed sheet-like structures, and upon incorporation of Pd(II) to IRMOF-9, porous cauliflower-shaped MOFs were obtained. The SEM area mapping of Pd 10% @IRMOF-9 confirmed the homogeneous dispersion of Pd(II) on IRMOF-9. BET measurements suggested an increase in the surface area as well as pore size upon incorporation of Pd(II) on IRMOF-9. Due to high porosity and high petal density, Pd 10% @IRMOF-9 demonstrated degradation of seven organic dyes, namely, orange G, methylene blue, methyl orange, congo red , methyl red, rhodamine 6G, and neutral red. It showed excellent results with >90% dye degradation efficiency in case of cationic, anionic as well as neutral dyes. Degradation of organic dyes followed the pseudo-first-order kinetics. Kinetic parameters, K M and V max , were calculated using the double reciprocal Lineweaver−Burk plot and were found to be 13.2 μM and 26.68 × 10 −8 M min −1 , respectively. Recyclability studies of heterogeneous Pd 10% @IRMOF-9 demonstrated the degradation of CR dye for five consecutive cycles without significant loss of its catalytic activity. Herein, a robust and efficient material for the degradation of organic dyes has been developed and demonstrated.

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Section: Introductionmentioning

confidence: 99%

Highly Efficient Cauliflower-like Palladium-Loaded Porous MOF as a Robust Material for the Degradation of Organic Dyes

Rimi,

Kumar,

Uttam

et al. 2023

ACS Omega

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Cadmium (II) metal–organic architecture based on versatile multi‐N‐donor “3,5‐diaminotriazole” and dicarboxylate spacer: Synthesis, crystal structure, and its photocatalytic degradation of organic dye

Khan,

AlFawaz,

Alhamed

et al. 2024

Applied Organom Chemis

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Herein, we have designed polyfunctional materials of d10‐configuration Cd (II) “Cd‐CP.” The coordination polymer Cd‐CP was synthesized using benzene‐1,4‐dicarboxylic acid and 3,5‐diaminotriazole via solvothermal reaction. The Cd‐CP has been fully characterized by using single X‐ray crystallography, thermogravimetric analysis (TGA), Fourier transform–infrared (FT‐IR) spectroscopy, Raman spectroscopy, scanning electron microscopy (SEM), powder X‐ray diffraction (PXRD), and Brunauer–Emmett–Teller (BET) analysis. Single crystal X‐ray crystallography revealed that the CP‐Cd crystallized in triclinic space group P – 1 with the chemical composition [(BDC)(DAT)2Cd2Cl] (CH3)2 NH2+ · H2O. The present study investigated the impact of different reaction parameters, including the concentration of MG, the dosage of catalyst, and the duration of irradiation, on the outcome demonstrating a high level of photocatalytic efficacy at 99.19% under visible light irradiation. The obtained kinetic data exhibited conformity with a pseudo‐first‐order model, indicating that the rate‐determining step is likely to be photo‐absorption. The value of the apparent rate constant was found to be 0.019 min−1 for 50 mg L−1, 0.016 min−1 for 100 mg L−1, and 0.015 min−1 for 150 mg L−1 MG concentration. The corresponding half‐life time was found to be 36.44, 43.31, and 46.20 min with values of correlation coefficient (R2) as 0.99, 0.93, and 0.98, respectively. Moreover, a trapping experiment was conducted to demonstrate that hydroxy radicals (•OH) are the principal reactive oxygen species (ROS) responsible for the degradation of MG. The results of the total organic carbon (TOC) study indicated a mineralization value of around 89%, suggesting that the dye has been completely degraded into non‐toxic by‐products such as carbon dioxide (CO2) and water (H2O).

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Metal−organic framework constructed by flexible ligands: A versatile platform towards efficient fluorescence sensing, adsorption separation and heterogeneous catalysis

Zhao,

Miao

2024

Coordination Chemistry Reviews

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Construction strategies to modulate the photocatalytic efficiency of Cd(ii) MOFs to photodegrade organic dyes

Abstract: The metal-organic frameworks (MOFs) a sub-class of well known coordination polymer are assorted multidimensional materials that could be employed as photocatalysts for aromatic dye decompostion present in the wastewater discharge....

Cited by 7 publications

References 82 publications

Highly Efficient Cauliflower-like Palladium-Loaded Porous MOF as a Robust Material for the Degradation of Organic Dyes

Highly Efficient Cauliflower-like Palladium-Loaded Porous MOF as a Robust Material for the Degradation of Organic Dyes

Cadmium (II) metal–organic architecture based on versatile multi‐N‐donor “3,5‐diaminotriazole” and dicarboxylate spacer: Synthesis, crystal structure, and its photocatalytic degradation of organic dye

Metal−organic framework constructed by flexible ligands: A versatile platform towards efficient fluorescence sensing, adsorption separation and heterogeneous catalysis

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