Regulating N content to anchor Fe in Fe-MOFs: Obtaining multiple active sites as efficient photocatalysts

Jin, Xianghui; Tang, Tao; Tao, Xumei; Huang, Liang; Shang, Shuyong

doi:10.1016/j.jtice.2021.10.033

Cited by 15 publications

(4 citation statements)

References 44 publications

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“…The degradation products were characterized by electrospray quadrupole mass spectrometry (ESI Q MS), and the structural information on the possible intermediates in the degradation process have been listed in Table S3, and the mass spectra of some substances were shown in Figures S10–S15. The possible degradation pathway was speculated in conjunction with the literature, − as shown in Figure . The mass spectral signal of MO corresponded to the deprotonated ion [M – H] − at m / z = 304, and all products were deprotonated ions [M – H] − obtained by ionization in the mass spectrum.…”

Section: Resultsmentioning

confidence: 96%

Preparation of Oxygen-Doping Nongraphitic Carbon Nitride via Efficiency Exfoliation for the Application of Photocatalytic Degradation

Wen,

Wang,

et al. 2023

Langmuir

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E-OLCN photocatalyst was synthesized by oxygen doping of low molecular weight carbon nitride (LCN) with ethanol solvent stripping. The enhanced light absorption, fast electron transport rate, and photogenerated carrier separation efficiency of E-OLCN leads to the excellent photocatalytic degradation performance compared with the original materials. The synergistic effect of oxygen doping and ethanol solvent stripping plays a significant role for the modulation of electronic and structural properties of the prepared catalysts. Methyl orange (MO) and rhodamine B (RhB) are chosen as typical pollutants for the application of photocatalytic degradation. The E-OLCN sample exhibits outstanding photocatalytic degradation performance, where the rate constant k (1 × 10–2 min–1) of E-OLCN (1.68) is 2.9 times than that of O-LCN (0.58) and 8.8 times than that of pristine LCN (0.19) for MO. Moreover, modulated E-OLCN shows good stability after cycling experiments and the activity still achieved 90%. The detailed mechanism for MO degradation was proposed with the technical support of liquid chromatography–mass spectrometry (LC-MS) and electron spin resonance (EPR). The superoxide radical (·O2–) is the main active species and the MO molecule could be decomposition completely.

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Section: Resultsmentioning

confidence: 96%

Preparation of Oxygen-Doping Nongraphitic Carbon Nitride via Efficiency Exfoliation for the Application of Photocatalytic Degradation

Wen,

Wang,

et al. 2023

Langmuir

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“…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

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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.

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“…Designing catalysts with an increased number of active sites stands out as an effective strategy for enhancing photocatalytic performance [57][58][59]. Jin et al [60] devised a novel dual-ligand Fe-MOF using dielectric barrier discharge (DBD). In this innovative approach, the N ligand served to regulate the active site, while the addition of N enhanced conductivity and provided additional sites for anchoring Fe.…”

Section: Dyestuffs Treatmentmentioning

confidence: 99%

Application of Fe-MOFs in Photodegradation and Removal of Air and Water Pollutants: A Review

Cai,

Peng,

Jiang

et al. 2023

Molecules

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Photocatalytic technology has received increasing attention in recent years. A pivotal facet of photocatalytic technology lies in the development of photocatalysts. Porous metal–organic framework (MOF) materials, distinguished by their unique properties and structural characteristics, have emerged as a focal point of research in the field, finding widespread application in the photo-treatment and conversion of various substances. Fe-based MOFs have attained particular prominence. This review explores recent advances in the photocatalytic degradation of aqueous and gaseous substances. Furthermore, it delves into the interaction between the active sites of Fe-MOFs and pollutants, offering deeper insights into their mechanism of action. Fe-MOFs, as photocatalysts, predominantly facilitate pollutant removal through redox processes, interaction with acid sites, the formation of complexes with composite metal elements, binding to unsaturated metal ligands (CUSs), and hydrogen bonding to modulate their respiratory behavior. This review also highlights the focal points of future research, elucidating the challenges and opportunities that lie ahead in harnessing the characteristics and advantages of Fe-MOF composite catalysts. In essence, this review provides a comprehensive summary of research progress on Fe-MOF-based catalysts, aiming to serve as a guiding reference for other catalytic processes.

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Regulating N content to anchor Fe in Fe-MOFs: Obtaining multiple active sites as efficient photocatalysts

Cited by 15 publications

References 44 publications

Preparation of Oxygen-Doping Nongraphitic Carbon Nitride via Efficiency Exfoliation for the Application of Photocatalytic Degradation

Preparation of Oxygen-Doping Nongraphitic Carbon Nitride via Efficiency Exfoliation for the Application of Photocatalytic Degradation

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

Application of Fe-MOFs in Photodegradation and Removal of Air and Water Pollutants: A Review

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