Strongly co-ordinated MOF-PSF matrix for selective adsorption, separation and photodegradation of dyes

Vinothkumar, Karthikeyarajan; Jyothi, M.S.; Lavanya, C.; Sakar, M.; Valiyaveettil, Suresh; Balakrishna, R. Geetha

doi:10.1016/j.cej.2021.132561

Cited by 79 publications

(29 citation statements)

References 69 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The flexible network, tunable pore sizes, and rich physicochemical properties enable them to be promising materials for gas separation, capture and storage, catalysis, chemical sensors, and biomedicine [2][3][4][5]. MOFs have ultrahigh porosity (up to 90% free volume), an enormous internal surface area, and surface area (beyond 6000 m 2 /g 3 ), supporting their applications in molecules' adsorption, drug loading, and release [4,6,7]. The incorporation of MOFs into a polymer as mixed-matrix membranes provides a solution to manipulate and process the crystalline and robust MOFs [8,9].…”

Section: Introductionmentioning

confidence: 99%

Iodine Immobilized UiO-66-NH2 Metal-Organic Framework as an Effective Antibacterial Additive for Poly(ε-caprolactone)

et al. 2022

View full text Add to dashboard Cite

Iodine has been widely used as an effective disinfectant with broad-spectrum antimicrobial potency. However, the application of iodine in an antibacterial polymer remains challenging due to its volatile nature and poor solubility. Herein, iodine immobilized UiO-66-NH2 metal-organic framework (MOF) (UiO66@I2) with a high loading capacity was synthesized and used as an effective antibacterial additive for poly(ε-caprolactone) (PCL). An orthogonal design approach was used to achieve the optimal experiments’ conditions in iodine adsorption. UiO66@I2 nanoparticles were added to the PCL matrix under ultrasonic vibration and evaporated the solvent to get a polymer membrane. The composites were characterized by SEM, XRD, FTIR, and static contact angle analysis. UiO-66-NH2 nanoparticles have a high iodine loading capacity, up to 18 wt.%. The concentration of iodine is the most important factor in iodine adsorption. Adding 0.5 wt.% or 1.0 wt.% (equivalent iodine content) of UiO66@I2 to the PCL matrix had no influence on the structure of PCL but reduces the static water angle. The PCL composites showed strong antibacterial activities against Staphylococcus aureus and Escherichia coli. In contrast, the same content of free iodine/PCL composites had no antibacterial activity. The difference in the antibacterial performance was due to the different iodine contents in the polymer composites. It was found that MOF nanoparticles could retain most of the iodine during the sample preparation and storage, while there was few iodine left in the free iodine/PCL composites. This study offers a common and simple way to immobilize iodine and prepare antibacterial polymers with low antiseptic content that would reduce the influence of an additive on polymers’ physical properties.

show abstract

Section: Introductionmentioning

confidence: 99%

Iodine Immobilized UiO-66-NH2 Metal-Organic Framework as an Effective Antibacterial Additive for Poly(ε-caprolactone)

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Metal–organic frameworks (MOFs) constructed with a metal ions and organic linkers have been shown to be a potential material for various applications such as sensing, energy storage, catalysis, proton conduction, and gas storage [ 16 , 17 , 18 , 19 ]. Furthermore, some MOFs illustrate a semiconducting mechanism in the presence of light, indicating that they may be probably utilized as photocatalysts [ 20 , 21 ]. Compared to traditional inorganic semiconductors, MOFs have various merits that include catalytically active organic linkers and unsaturated metal ion sites [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

Development of MOF Based Recyclable Photocatalyst for the Removal of Different Organic Dye Pollutants

et al. 2023

View full text Add to dashboard Cite

The preparation of metal organic frameworks (MOFs) has come to the forefront in recent years because of their outstanding physical and chemical properties. Many MOFs such as Zn, Co, Ni, Fe, and Ag, etc., have been successfully synthesized. In this work, we followed the solvothermal assisted route to synthesize Ag-MOF (abbreviated as AMOF) nanosheets and then applied them as a photocatalyst to remove different organic pollutants, namely methyl orange (MO), crystal violet (CV), and methylene blue (MB). Chemical composition, optical properties, morphology, and microstructural analysis were analyzed using XPS, UV-visible spectrophotometer, FESEM, TEM, and EDS, respectively. The structural properties of AMOF nanosheets were studied by X-ray diffraction (XRD). Nitrogen adsorption and desorption isotherm analysis were utilized to evaluate the specific surface area and pore size of the AMOF nanosheets. Further, AMOF nanosheets showed notable photocatalytic performance for various dye pollutants degradation. The results confirmed 74.5, 85.5, and 90.7% of MO, CV, and MB dye pollutants removal after 120 min of irradiation with the rate constants (k) of 0.0123, 0.0153, and 0.0158 min−1, respectively. The effect of superoxide radicals (O2−) and photogenerated holes (h+) on the organic dye pollutants removal was investigated using radical scavenger trapping studies. Moreover, the stability study also confirmed the recyclability of the photocatalyst. Therefore, the findings of this research present a realizable method to grow AMOF photocatalyst for successful degradation of various dye pollutants.

show abstract

“…10). 139 NH 2 -MIL-101(Fe) was synthesized to enhance the optical properties and control the surface charge. This Fe-MOF was then embedded into PSF membrane, and the obtained MOF-integrated membrane was used for separation, removal and degradation of RhB and MO.…”

Section: Multifunctional Mofs For Water Pollution Treatmentmentioning

confidence: 99%

Multi-functional metal–organic frameworks for detection and removal of water pollutions

Pang

2022

Chem. Commun.

View full text Add to dashboard Cite

show abstract

Strongly co-ordinated MOF-PSF matrix for selective adsorption, separation and photodegradation of dyes

Cited by 79 publications

References 69 publications

Iodine Immobilized UiO-66-NH2 Metal-Organic Framework as an Effective Antibacterial Additive for Poly(ε-caprolactone)

Iodine Immobilized UiO-66-NH2 Metal-Organic Framework as an Effective Antibacterial Additive for Poly(ε-caprolactone)

Development of MOF Based Recyclable Photocatalyst for the Removal of Different Organic Dye Pollutants

Multi-functional metal–organic frameworks for detection and removal of water pollutions

Contact Info

Product

Resources

About