Synthesis of value-added MIL-53(Cr) from waste polyethylene terephthalate bottles for the high-performance liquid chromatographic determination of methylxanthines in tea

Aqel, Ahmad; Alothman, Asma A.; Alghamdi, Wafa J.; Alkatheri, Norah; Al‐Mohaimeed, Amal M.; Ghfar, Ayman A.; Badjah-Hadj-Ahmed, Ahmed-Yacine

doi:10.1016/j.microc.2021.106294

Cited by 5 publications

(4 citation statements)

References 41 publications

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“…At the very early stage, the synthesis of MOFs from waste PET slices consisted of two steps. 42 Briefly, H 2 BDC was extracted from waste PET slices via hydrolysis prior to metal salt addition and a solvothermal process in other reactors. 43 For example, Zhang et al 44 synthesized a Tb-based MOF by degrading waste PET into H 2 BDC under alkaline conditions and high pressure.…”

Section: Sustainable Mof Productionmentioning

confidence: 99%

“…50 More interestingly, according to Pearson's hard–soft-acid–base theory, Fe 3+ and Cr 3+ are stronger Lewis acids than Ni 2+ , so Fe 3+ and Cr 3+ tend to react with Lewis bases like BDC. 2–51 Furthermore, Fe 3+ and Cr 3+ , with their higher oxidative states, are more likely to form covalent bonds when interacting with deprotonated organic linkers. 52 As a result, the introduction of H 2 BDC into steel pickling wastewater can trigger selective coordination between Fe 3+ or Cr 3+ and BDC 2− , accomplishing the purification of Ni 2+ at the same time.…”

Section: Sustainable Mof Productionmentioning

confidence: 99%

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Sustainable production and applications of metal–organic frameworks

Chu,

Liu,

Wang

et al. 2024

Chem. Commun.

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Section: Sustainable Mof Productionmentioning

confidence: 99%

Section: Sustainable Mof Productionmentioning

confidence: 99%

Sustainable production and applications of metal–organic frameworks

Chu,

Liu,

Wang

et al. 2024

Chem. Commun.

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“…Most of these MOFs were prepared in a one-pot reaction by solvothermal methods, in presence of HF or HCl to promote PET depolymerization. MIL-53(Cr) prepared according to this procedure was successfully used as adsorbing solid phase for the HPLC determination of various methylxanthines in tea samples [ 118 ]. The MOF-based matrix featured higher retention factors with respect to conventional silica-based columns, the enhancement being attributed to favourable π- π interactions between the alkaloid molecules and the aromatic rings of the BDC ligand.…”

Section: Plastic Waste As Linker Source For Mofs Adsorbentsmentioning

confidence: 99%

Metal-organic frameworks and plastic: an emerging synergic partnership

Mastropietro

2023

Science and Technology of Advanced Materials

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Mismanagement of plastic waste results in its ubiquitous presence in the environment. Despite being durable and persistent materials, plastics are reduced by weathering phenomena into debris with a particle size down to nanometers. The fate and ecotoxicological effects of these solid micropollutants are not fully understood yet, but they are raising increasing concerns for the environment and people’s health. Even if different current technologies have the potential to remove plastic particles, the efficiency of these processes is modest, especially for nanoparticles. Metal-organic frameworks (MOFs) are crystalline nano-porous materials with unique properties, have unique properties, such as strong coordination bonds, large and robustus porous structures, high accessible surface areas and adsorption capacity, which make them suitable adsorbent materials for micropollutants. This review examines the preliminary results reported in literature indicating that MOFs are promising adsorbents for the removal of plastic particles from water, especially when MOFs are integrated in porous composite materials or membranes, where they are able to assure high removal efficiency, superior water flux and antifouling properties, even in the presence of other dissolved co-pollutants. Moreover, a recent trend for the alternative preparation of MOFs starting from plastic waste, especially polyethylene terephthalate, as a sustainable source of organic linkers is also reviewed, as it represents a promising route for mitigating the impact of the costs deriving from the widescale MOFs production and application. This connubial between MOFs and plastic has the potential to contribute at implementing a more effective waste management and the circular economy principles in the polymer life cycle.

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“…The MIL-101(Cr) framework structure contains mesoporous supertetrahedral cages formed by linking four trimeric clusters as vertices and six BDC linkers as edges. Cr-based MOFs derived from waste precursors, such as PET-derived terephthalates and commercial chromium salts, have been explored in only a few published papers 21,[40][41][42] .…”

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confidence: 99%

Enabling simultaneous valorization of tannery effluent and waste plastic via sustainable preparation of Cr-BDC MOFs for water adsorption

Delhali,

Assen,

Mohammed

et al. 2023

Sci Rep

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Advanced materials undergo a complex and lengthy process of maturation for scaling up and deployment, mainly due to the high cost of their precursors. Therefore, it is highly desirable to fabricate highly valuable advanced porous solid-state materials, with proven applicability, by sustainably combining organic and inorganic waste materials as precursors. This study successfully demonstrates the preparation of Cr-terephthalate Metal–Organic Frameworks (Cr-BDC MOFs) by combining metal salt and organic linker extracted from tannery effluent and waste plastic bottles. The waste from tanneries was used as the source of Cr(III), while terephthalic acid was obtained from the alkaline hydrolysis of plastic bottles. Appropriate extraction and assembly processes led to the functional Cr-BDC MOFs, MIL-101(Cr) and MIL-53(Cr). The prepared MOFs showed similar properties (surface area, hydrolytic and thermal stability, and water adsorption performance) to similar MOFs synthesized from pure commercial-grade precursors, as confirmed by N2 sorption, XRD, TGA, and water adsorption experiments. The advancements made in this study represent significant progress in overcoming the bottleneck of MOF production cost efficiency via applying sustainability principles and pave the way for easy scaling-up and maturation of MOF-based processes, for air dehumidification and water harvesting as a case study.

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Synthesis of value-added MIL-53(Cr) from waste polyethylene terephthalate bottles for the high-performance liquid chromatographic determination of methylxanthines in tea

Cited by 5 publications

References 41 publications

Sustainable production and applications of metal–organic frameworks

Sustainable production and applications of metal–organic frameworks

Metal-organic frameworks and plastic: an emerging synergic partnership

Enabling simultaneous valorization of tannery effluent and waste plastic via sustainable preparation of Cr-BDC MOFs for water adsorption

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