Effects of Fe(II)/Fe(III) of Fe-MOFs on catalytic performance in plasma/Fenton-like system

Tao, Xumei; Yuan, Xinjie; Huang, Liang

doi:10.1016/j.colsurfa.2020.125745

Cited by 27 publications

(6 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fenton oxidation involves a chain reaction between Fe 2+ and H 2 O 2 that catalyzes the production of a large number of free radicals to produce a strong oxidation effect [ 37 ]. The three-dimensional response surface presented in Figure 4 c,e,f shows that the SMZ removal rate was highest at an initial pH of 3 and decreased as the initial pH decreased.…”

Section: Resultsmentioning

confidence: 99%

Hydrogen Peroxide Activated by Biochar-Supported Sulfidated Nano Zerovalent Iron for Removal of Sulfamethazine: Response Surface Method Approach

Zhang

Chen

et al. 2022

IJERPH

View full text Add to dashboard Cite

Biochar (BC)-supported sulfide-modified nanoscale zerovalent iron (S-nZVI/BC) was prepared using the liquid-phase reduction method for the application of the removal of sulfamethazine (SMZ) from water. The reaction conditions were optimized by the Box–Behnken response surface method (RSM). A model was constructed based on the influence factors of the removal rate, i.e., the carbon-to-iron ratio (C/Fe), iron-sulfur ratio (Fe/S), pH, and hydrogen peroxide (H2O2) concentration, and the influence of each factor on the removal efficiency was investigated. The optimal removal process parameters were determined based on theoretical and experimental results. The results showed that the removal efficiency was significantly affected by the C/Fe ratio and pH (p < 0.0001) but relatively weakly affected by the Fe/S ratio (p = 0.0973) and H2O2 concentration (p = 0.022). The optimal removal process parameters were as follows: 0.1 mol/L H2O2, a pH of 3.18, a C/Fe ratio of 0.411, and a Fe/S ratio of 59.75. The removal rate of SMZ by S-nZVI/BC was 100% under these conditions. Therefore, it is feasible to use the Box–Behnken RSM to optimize the removal of emerging pollutants in water bodies by S-nZVI/BC.

show abstract

Section: Resultsmentioning

confidence: 99%

Hydrogen Peroxide Activated by Biochar-Supported Sulfidated Nano Zerovalent Iron for Removal of Sulfamethazine: Response Surface Method Approach

Zhang

Chen

et al. 2022

IJERPH

View full text Add to dashboard Cite

show abstract

“…The detected peaks at 861.7 and 855.1 eV in the 3D core-level photoelectron spectroscopy for La match the La 3d 3/2 and La 3d 5/2 orbitals. As demonstrated in Figure 6, the C 1s spectrum of the as-synthesized Zr-MOF unveiled deconvolution as C=O, C-O, O-C=O, and C-C at distinct binding energies of 288.2, 287.3, 289.5, and 285.4 eV, each representing various functionalities containing oxygen (Figure 6d) [60]. Four discernable peaks at 535.40, 533.60, 531.80, and 530.30 eV, respectively, corresponding to the Zr-O, O-C, O=C, and COO-moieties, are recorded in Figure 6c.…”

Section: Xpsmentioning

confidence: 89%

Transforming Waste into Value: Eco-Friendly Synthesis of MOFs for Sustainable PFOA Remediation

Jery,

Pecho,

Tania Churampi Arellano

et al. 2023

Sustainability

View full text Add to dashboard Cite

In response to the need for sustainable solutions to address perfluorooctanoic acid (PFOA) contamination, we have developed an eco-friendly approach for synthesizing two types of metal-organic frameworks (MOFs) using waste polyethylene terephthalate (PET) bottles via a one-pot microwave-assisted strategy. Our innovative method not only avoids the initial depolymerization of PET bottles but also promotes environmental conservation by recycling waste materials. The La-MOF and Zr-MOF materials exhibit remarkable surface areas of 76.90 and 293.50 m2/g, respectively, with La-MOF demonstrating greater thermal stability than Zr-MOF. The maximum experimental PFOA adsorption for La-MOF and Zr-MOF was obtained at 310 and 290 mg/g, respectively. Both MOFs follow the Langmuir isotherm closely, with the adsorption of PFOA following a pseudo-2nd-order kinetic model. In packed-bed column tests, breakthrough positions of 174 and 150 min were observed for La-MOF and Zr-MOF, respectively, with corresponding bed volumes of 452 mL and 522 mL based on the PFOA limit of 0.07 µg/L in drinking water. These findings indicate that these MOFs can be used in industrial packed-bed columns to remove PFOA from contaminated water sources in an efficient and cost-effective manner. Importantly, the sorption performance of the fabricated MOFs for PFOA remained stable, decreasing by less than 10% over seven cycles. This study underscores the potential of recycled PET bottles and the one-pot microwave-assisted synthesis of MOFs as an effective and environmentally friendly solution for PFOA remediation. This innovative approach has several managerial implications, such as the use of waste materials as a feedstock, which can reduce the cost of production and minimize environmental impact by promoting recycling and repurposing, enhancing the reputation of companies operating in the chemical industry, and improving their sustainability metrics. By integrating sustainability principles and waste recycling, our approach offers promising avenues for addressing PFOA contamination while promoting resource efficiency and environmental conservation.

show abstract

“…Finally, the DBD plasma method is a novel MOF synthesis technique that is low-cost and is considered as environmentally sustainable [144]. This synthesis method is based on the electrical discharge between two electrodes separated by an insulating dielectric barrier.…”

Section: Other Synthesis Methods Of Fe-mofmentioning

confidence: 99%

“…Tao et al [145] were the first to report this synthesis route that provided several advantages such as the reduction in synthesis time and enhanced the adsorption properties of the catalyst. Since then (2019), only six papers have been published, based on Scopus databases about Fe-MOF synthesis with this method [144][145][146][147][148][149]. Therefore, it is possible that in the not-too-distant future, this method will be used more frequently for the synthesis of Fe-MOF.…”

Section: Other Synthesis Methods Of Fe-mofmentioning

confidence: 99%

Metal–Organic Frameworks as Powerful Heterogeneous Catalysts in Advanced Oxidation Processes for Wastewater Treatment

et al. 2022

View full text Add to dashboard Cite

Nowadays, the contamination of wastewater by organic persistent pollutants is a reality. These pollutants are difficult to remove from wastewater with conventional techniques; hence, it is necessary to go on the hunt for new, innovative and environmentally sustainable ones. In this context, advanced oxidation processes have attracted great attention and have developed rapidly in recent years as promising technologies. The cornerstone of advanced oxidation processes is the selection of heterogeneous catalysts. In this sense, the possibility of using metal–organic frameworks as catalysts has been opened up given their countless physical–chemical characteristics, which can overcome several disadvantages of traditional catalysts. Thus, this review provides a brief review of recent progress in the research and practical application of metal–organic frameworks to advanced oxidation processes, with a special emphasis on the potential of Fe-based metal–organic frameworks to reduce the pollutants present in wastewater or to render them harmless. To do that, the work starts with a brief overview of the different types and pathways of synthesis. Moreover, the mechanisms of the generation of radicals, as well as their action on the organic pollutants and stability, are analysed. Finally, the challenges of this technology to open up new avenues of wastewater treatment in the future are sketched out.

show abstract

Effects of Fe(II)/Fe(III) of Fe-MOFs on catalytic performance in plasma/Fenton-like system

Cited by 27 publications

References 29 publications

Hydrogen Peroxide Activated by Biochar-Supported Sulfidated Nano Zerovalent Iron for Removal of Sulfamethazine: Response Surface Method Approach

Hydrogen Peroxide Activated by Biochar-Supported Sulfidated Nano Zerovalent Iron for Removal of Sulfamethazine: Response Surface Method Approach

Transforming Waste into Value: Eco-Friendly Synthesis of MOFs for Sustainable PFOA Remediation

Metal–Organic Frameworks as Powerful Heterogeneous Catalysts in Advanced Oxidation Processes for Wastewater Treatment

Contact Info

Product

Resources

About