Metal–organic frameworks (MOFs) based nanofiber architectures for the removal of heavy metal ions

Adil, Heja Ibrahim; Thalji, Mohammad R.; Yasin, Suhad A.; Saeed, Ibtisam A.; Assiri, Mohammed A.; Chong, Kwok Feng; Ali, Gomaa A. M.

doi:10.1039/d1ra07034g

Cited by 56 publications

(16 citation statements)

References 102 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Meanwhile, the comparison between SEM images of pure CF and MOF-525-Fe/Zr-modified CF (named MOF-525-Fe/Zr) clearly shows that the catalyst can be uniformly coated on the surface of CF, which proves that MOF-525-Fe/Zr can be successfully loaded on the CF to form modified cathode (Figure 1b,c). The load of continuous nucleated MOF-525-Fe/Zr nanoparticles on CF would increase the electrical conductivity of nanocomposites by reducing the grain boundaries and contact resistance [29].…”

Section: Composition and Structural Characterization Of Catalystsmentioning

confidence: 99%

Reconstruction of Electronic Structure of MOF-525 via Metalloporphyrin for Enhanced Photoelectro-Fenton Process

Han

Lin

et al. 2022

Catalysts

View full text Add to dashboard Cite

Photoelectro-Fenton (PEF) process can continuously promote the occurrence of Fenton reaction and the generation of active species, which is an advanced oxidation technology for pollutant degradation. However, the lack of bifunctional catalysts restricts the development of PEF technology. In this study, the electronic rearrangement MOF-525 modified by metalloporphyrin (named MOF-525-Fe/Zr) was prepared, to load on the carbon felt as a novel cathode catalyst, which is used in PEF process. A series of characterization and photoelectric chemical properties tests combined with DFT calculation showed that the modification of MOF-525 could not only have the large specific surface area and multistage pore structure but also co-stimulate the metal-to-ligand charge transfer (MLCT) and ligand-to-cluster charge transfer (LCCT) by photoelectric synergy. These charge transitions provide periodic electron donor-acceptor conduction paths in MOF-525-Fe/Zr, which can improve the active species formation and transfer efficiency. Owing to their favorable pore and electronic structure as well as stability, MOF-525-Fe/Zr shows great promise for the application in the catalytic process of PEF. Sulfamethoxazole (SMX) degradation was enhanced by MOF-525-Fe/Zr with the TOC removal rate above 75% both in river water and tap water. Finally, the reasonable pathway of PEF catalytic degradation of SMX was proposed by HPLC-MS analysis. In conclusion, this study provides a new idea for reconstructing the electronic structure of MOFs catalyst and broadening the practical application of PEF technology.

show abstract

Section: Composition and Structural Characterization Of Catalystsmentioning

confidence: 99%

Reconstruction of Electronic Structure of MOF-525 via Metalloporphyrin for Enhanced Photoelectro-Fenton Process

Han

Lin

et al. 2022

Catalysts

View full text Add to dashboard Cite

show abstract

“…72 The MD-based MOF nanofibers showed lesser BET surface area (but higher than M0) because of MOF particles being embedded in the polymeric fibers. 73,74 The pore size distribution by the Barrett−Joyner−Halenda (BJH) plot further confirms the mesoporous nature of the nanofiber membranes. Thus, the macroporous nature of the membranes was converted to mesoporous nature, thus facilitating better rejection.…”

Section: ■ Results and Discussionmentioning

confidence: 95%

Nature-Inspired Photoactive Metal–Organic Framework Nanofiber Filters for Oil–Water Separation: Conserving Successive Flux, Rejection, and Antifouling

Vinothkumar

Lavanya

Sakar

et al. 2023

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Rapid urbanization and industrialization have significantly added to the complexity of wastewater treatment, particularly due to the presence of nonsegregated organic and aqueous phases, and hence, technology to remove such mixed-phase pollutants is essential. A photocatalytic iron-based metal–organic framework possessing a band gap of 2.18 eV and a very high surface area of ∼1400 m2 g–1 was embedded into poly(acrylonitrile) nanofibers for oil/water separation and degradation of dye contaminants. The synthesized nanofibers were schemed to mimic two different morphologies (spider silk and desert beetle morphology) via electrospinning for rendering both hydrophilic and hydrophobic pockets. Excellent flux was achieved and the good antifouling ability of these iron-based metal–organic framework nanofiber membranes, together with the advantage of Fe–O clusters that help in the removal of oil (by adsorption) and dyes beyond 90% via photo-Fenton-like reaction, is successfully demonstrated, scientifically reasoned, and justified with the help of characterization techniques, thus showing the promises of using these membranes for real-time applications.

show abstract

“…(2) Harmful effects of heavy metals on soil From the current social development point of view, wastewater can be divided into domestic wastewater, industrial wastewater, chemical wastewater, etc. [8]. The heavy metal content in domestic sewage is actually relatively low, but it is delayed due to the rapid growth of the industry.…”

Section: Heavy Metal Hazardsmentioning

confidence: 99%

Drought Resistance and Heavy Metal Adsorption Capacity of Mulberry in Alpine Regions

2022

IJNDES

View full text Add to dashboard Cite

Mulberry is an important perennial economic crop. It is the pursuit of modern mulberry breeders to continuously improve the drought resistance and heavy metal adsorption capacity of mulberry varieties. In this paper, three excellent mulberry varieties were introduced and cultivated in the alpine region, and the drought resistance of mulberry seedlings under different drought degrees and different days of drought was analysed. The root powder of mulberry seedlings was ground and dissolved by combining physical and chemical methods. The heavy metal ions are taken as an example. The heavy metal adsorption capacity of the root powder of mulberry seedlings under different initial ion concentrations and different pH values is analysed. The experimental results show that the drought resistance of different varieties is different. The concentration of heavy metal ions and pH value can only be achieved.

show abstract

Metal–organic frameworks (MOFs) based nanofiber architectures for the removal of heavy metal ions

Abstract: Metal–organic frameworks (MOFs) are promising and effective materials for removing heavy metal ions from contaminated water owing to their high porosity, remarkable physical and chemical properties, and high specific surface area.

Cited by 56 publications

References 102 publications

Reconstruction of Electronic Structure of MOF-525 via Metalloporphyrin for Enhanced Photoelectro-Fenton Process

Reconstruction of Electronic Structure of MOF-525 via Metalloporphyrin for Enhanced Photoelectro-Fenton Process

Nature-Inspired Photoactive Metal–Organic Framework Nanofiber Filters for Oil–Water Separation: Conserving Successive Flux, Rejection, and Antifouling

Drought Resistance and Heavy Metal Adsorption Capacity of Mulberry in Alpine Regions

Contact Info

Product

Resources

About