Application of covalent organic frameworks and metal–organic frameworks nanomaterials in organic/inorganic pollutants removal from solutions through sorption-catalysis strategies

Abstract

With the fast development of agriculture, industrialization and urbanization, large amounts of different (in)organic pollutants are inevitably discharged into the ecosystems. The efficient decontamination of the (in)organic contaminants is crucial to human health and ecosystem pollution remediation. Covalent organic frameworks (COFs) and metal–organic frameworks (MOFs) have attracted multidisciplinary research interests because of their outstanding physicochemical properties like high stability, large surface areas, high sorption capacity or catalytic activity. In this review, we summarized the recent works about the elimination/extraction of organic pollutants, heavy metal ions, and radionuclides by MOFs and COFs nanomaterials through the sorption-catalytic degradation for organic chemicals and sorption-catalytic reduction-precipitation-extraction for metals or radionuclides. The interactions between the (in)organic pollutants and COFs/MOFs nanomaterials at the molecular level were discussed from the density functional theory calculation and spectroscopy analysis. The sorption of organic chemicals was mainly dominated by electrostatic attraction, π-π interaction, surface complexation and H-bonding interaction, whereas the sorption of radionuclides and metal ions was mainly attributed to surface complexation, ion exchange, reduction and incorporation reactions. The porous structures, surface functional groups, and active sites were important for the sorption ability and selectivity. The doping or co-doping of metal/nonmetal, or the incorporation with other materials could change the visible light harvest and the generation/separation of electrons/holes (e−/h+) pairs, thereby enhanced the photocatalytic activity. The challenges for the possible application of COFs/MOFs nanomaterials in the elimination of pollutants from water were described in the end.

MXenes and MXene-Based Materials for Removal and Detection of Water Contaminants: A Review

“…Recently, the development of novel materials with tunable characteristics has received substantial attention from researchers to improve the strategies for water treatment and water quality monitoring. − Nanomaterials have emerged as promising options in environmental sensing and remediation applications by virtue of their unique physicochemical characteristics. Such materials are not limited to but include semiconductor quantum dots, metal and polymeric nanoparticles, nanocomposites, carbon nanotubes, and metal–organic framework nanoparticles. − The synthesis of novel nanostructures and a broad range of prospective applications have been made feasible by the remarkable advancements made with covalent organic frameworks (COFs) and metal–organic frameworks (MOFs). − The incorporation of functionalized nanomaterials with tailored properties can facilitate the attainment of higher levels of sensitivity, selectivity, and performance …”

Ethylenediamine-Functionalized Graphene Oxide Nanosheets for Modifying Chitosan/Polyvinyl Alcohol Membrane Adsorbents for RB19 Removal from Wastewater

“…As a consequence, the removal of RB19 dye molecules from industrial effluents is essential. − Diverse chemical, physical, and biological treatment techniques, such as membrane filtration, adsorption, advanced oxidation processes, photocatalytic degradation, biological treatment, and coagulation/flocculation operations, have been used and studied for eliminating dye pollutants from industrial effluents. The adsorption process has been comprehensively explored for dye removal from wastewater because it is proven to be impactful, flexible, economically desirable, and easy to scale up and control. , To date, numerous adsorbents like activated carbon, clay, metal oxide nanoparticles, metal–organic frameworks, covalent organic frameworks, , and graphene-based materials have been investigated for dye elimination from water and wastewater.…”

“…The adsorption process has been comprehensively explored for dye removal from wastewater because it is proven to be impactful, flexible, economically desirable, and easy to scale up and control. 7,11 To date, numerous adsorbents like activated carbon, 12 clay, 13 metal oxide nanoparticles, 14 metal−organic frameworks, 15 covalent organic frameworks, 16,17 and graphene-based materials 18 have been investigated for dye elimination from water and wastewater.…”

High Internal Phase Emulsion Template Strategy for the Preparation of UiO-66-NH2 Foam Photocatalysts: A Pseudomonas putida Intimately Coupled UiO-66-NH2 System for Efficient Removal of Antibiotics

“…16 Recently, because of their intriguing architecture, extensive surface area, and adjustable pore structure, metal−organic frameworks (MOFs) have been widely used in gas storage and separation, 25,26 drug delivery, 27 chemical sensors, 28 heterogeneous catalysis, 29,30 etc. Particularly, MOFs have demonstrated significant potential in photocatalytic applications, such as degradation of organic pollutants 31 and CO 2 photoreduction. 32 For instance, Gomes Silva et al 33 synthesized UIO-66-NH 2 (UIO) by substituting 2-amino-1,4-benzenedicarboxylic acid for 1,4-benzenedicarboxylic acid in UiO-66, which exhibits excellent hydrothermal/chemical stability, high hydrophilicity, and wonderful biocompatibility.…”