Enhanced fluoride remediation from aqueous solution by La-modified ZIF-8 hybrids

Yang, Weisen; Jiang, Wenlong; Shi, Fengshuo; Liu, Yifei; Chen, Yuhuang; Duan, Gaigai; Zhang, Chunmei; Hu, Jiapeng; Jian, Shaoju

doi:10.1016/j.colsurfa.2023.131726

Cited by 14 publications

(3 citation statements)

References 69 publications

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“…In a study by Yang and his team [219], La-altered ZIF-8 hybrid materials (La-ZIF-8) with varying La contents were successfully synthesized using a solvothermal approach and were subsequently utilized towards fluoride recovery from wastewater. The defluoridation capability of the proposed hybrid material under several conditions was evaluated through static batch experiments.…”

Section: Adsorptive Removal Of Fluoridementioning

confidence: 99%

Functional MOF-Based Materials for Environmental and Biomedical Applications: A Critical Review

Gatou,

Vagena,

Lagopati

et al. 2023

Nanomaterials

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Over the last ten years, there has been a growing interest in metal–organic frameworks (MOFs), which are a unique category of porous materials that combine organic and inorganic components. MOFs have garnered significant attention due to their highly favorable characteristics, such as environmentally friendly nature, enhanced surface area and pore volume, hierarchical arrangements, and adjustable properties, as well as their versatile applications in fields such as chemical engineering, materials science, and the environmental and biomedical sectors. This article centers on examining the advancements in using MOFs for environmental remediation purposes. Additionally, it discusses the latest developments in employing MOFs as potential tools for disease diagnosis and drug delivery across various ailments, including cancer, diabetes, neurological disorders, and ocular diseases. Firstly, a concise overview of MOF evolution and the synthetic techniques employed for creating MOFs are provided, presenting their advantages and limitations. Subsequently, the challenges, potential avenues, and perspectives for future advancements in the utilization of MOFs in the respective application domains are addressed. Lastly, a comprehensive comparison of the materials presently employed in these applications is conducted.

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Section: Adsorptive Removal Of Fluoridementioning

confidence: 99%

Functional MOF-Based Materials for Environmental and Biomedical Applications: A Critical Review

Gatou,

Vagena,

Lagopati

et al. 2023

Nanomaterials

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“…Numerous methods have been used to remove TA including adsorption, photo degradation, flocculation/coagulation, precipitation, chemical oxidation ion exchange, and aerobic or anaerobic processes. − Nowadays, adsorption is attracting more and more attention due to its simplicity and adaptability. − It is an efficient and straightforward method that enables kinetic and equilibrium measurements without the use of highly complex instruments. − …”

Section: Introductionmentioning

confidence: 99%

Poly(N-cyclohexylacrylamide-co-divinylbenzene-co-N-vinylimidazole) for the Removal of Tartrazine from Commercial Beverages

Erdem Yayayürük,

Çankaya,

Yayayürük

2023

ACS Appl. Polym. Mater.

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Tartrazine is a synthetic organic dye used in the food industry that should be monitored and controlled due to its toxicity. In this regard, the current study aimed to utilize a promising adsorbent, poly(N-cyclohexylacrylamide-co-divinylbenzene-co-N-vinylimidazole), poly(NCA-co-DVB-co-VIM), for the effective removal of tartrazine from commercial beverages. The surface properties were investigated by several analytical techniques [Fourier transform infrared spectroscopy, Brunauer–Emmett–Teller analysis, scanning electron microscopy, elemental, zeta potential, and thermal analyses]. The adsorption of tartrazine was studied by examining various parameters, and the optimum conditions were determined as follows: pH of 2.0, an adsorbent dosage of 10.0 mg, a contact time of 180 min, and a temperature of 25 °C. The adsorption process was found to be in good agreement with the Langmuir isotherm and pseudo-second-order kinetic models. Based on the analysis of thermodynamic parameters, it was inferred that the adsorption process was both spontaneous and exothermic. The experimental adsorption capacity of the adsorbent was evaluated as 436.3 mg g–1. Desorption of tartrazine from the adsorbent was achieved with 2.0 M NaOH. The adsorbent demonstrated good stability and reusability even after eight adsorption–desorption cycles since no significant loss (only from 99.9–72%) in the adsorption/desorption efficiency was observed. The method was employed for the determination of tartrazine in different commercial beverages, and satisfactory recovery values (>99.6%) were obtained. The outcomes of the overall study specified that the proposed adsorbent has promising capabilities for the removal of tartrazine from beverages.

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“…Notably, zeolite imidazole frameworks (ZIFs) involving imidazole ligands and metal centers (Zn, Co, etc.) have been intentionally utilized as precursors/templates to construct the carbon-supported metal nanoparticles (NPs) or single atoms due to their merits such as high porosity, robust framework, and plentiful N-rich ligands. − Scientists have devoted considerable efforts to the syntheses and performances of ZIFs and their derivatives. − Based on the above considerations, it is expected that the calcination treatment of Fe-doped Zn-ZIF is able to not only achieve a high density of Fe-based active sites but also generate abundant hierarchical pores and structural defects induced by zinc evaporation in the process of pyrolysis, which facilitate significant enhancement of the ORR activity . Unfortunately, direct pyrolysis for ZIFs usually undergoes an inevitable self-aggregation, and severe morphological contraction and structural collapse, which is not conductive to boosting the catalytic performance .…”

Section: Introductionmentioning

confidence: 99%

Polypyrrole Template-Assisted Synthesis of Tubular Fe-NC Nanostructure-Based Electrocatalysts for Efficient Oxygen Reduction Reaction in Rechargeable Zinc–Air Battery

Shen,

He,

Zhuang

et al. 2023

ACS Appl. Nano Mater.

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One-dimensional metal/N-doped carbons have exhibited promise for use as efficient catalysts of the oxygen reduction reaction (ORR). In this work, Fe,Ndoped carbon nanotubes (Fe-NC@NCNT) are developed by pyrolyzing the precursor/template of a polypyrrole (PPy) nanotube-anchored Fe/Zn-based zeolite imidazole framework. Thanks to the hierarchical tubular nanostructure, high electronic conductivity, and abundant Fe-based species (Fe-N x sites and Fe/Fe 3 C nanoparticles), the designed electrocatalyst exhibits a catalytic property comparable to that of commercial Pt/C. Specifically, the Fe-NC@NCNT catalyst undergoes a fourelectron ORR pathway with an onset potential of 0.96 V and a half-wave potential of 0.88 V versus reversible hydrogen electrode, a small Tafel slope of 60.0 mV dec −1 , remarkable long-term cycle durability, as well as strong alcohol tolerance in an alkaline electrolyte. When applied to the air-electrode catalyst of rechargeable zinc−air batteries, the

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Enhanced fluoride remediation from aqueous solution by La-modified ZIF-8 hybrids

Cited by 14 publications

References 69 publications

Functional MOF-Based Materials for Environmental and Biomedical Applications: A Critical Review

Functional MOF-Based Materials for Environmental and Biomedical Applications: A Critical Review

Poly(N-cyclohexylacrylamide-co-divinylbenzene-co-N-vinylimidazole) for the Removal of Tartrazine from Commercial Beverages

Polypyrrole Template-Assisted Synthesis of Tubular Fe-NC Nanostructure-Based Electrocatalysts for Efficient Oxygen Reduction Reaction in Rechargeable Zinc–Air Battery

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