Elucidating the Mechanistic Origin of a Spin State-Dependent FeN_x–C Catalyst toward Organic Contaminant Oxidation via Peroxymonosulfate Activation

Environmental Science & Technology, Journal Year: 2021, Volume and Issue: 56(2), P. 1321 - 1330

Published: Dec. 23, 2021

Atomically dispersed metals on nitrogen-doped carbon matrices have attracted extensive interest in the removal of refractory organic pollutants. However, a thorough exploration particular structure for each active site and specific effects these sites still remains elusive. Herein, an Fe-pyridinic N4 single-atom catalyst (FeNx-C) was constructed using facile pyrolysis strategy, it exhibited superior catalytic activity peroxymonosulfate (PMS) activation toward contaminant oxidation. The various Fe species relative amounts FeNx-C were validated X-ray absorption spectroscopy 57Fe Mössbauer spectroscopy, which showed critical dependencies precursor ratio calcination temperature. positive correlations between content high-spin state (FeII FeIII) performance found to determine reactive generation electron transfer pathway FeNx-C/PMS system. Moreover, theoretical calculation results revealed that FeII-N4 (S = 2) tends activate PMS form sulfate hydroxyl radicals via one-electron process, while FeIII-N4 moiety 5/2) is prone high-valent iron with lower free energy. Benefiting from finely tuned sites, achieved favorable applicability actual wastewater treatment efficient resistance common water matrix. present work advances mechanistic understanding spin state-dependent persulfate catalysts provides guidance design based descriptions.

Language: Английский

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Construction of Self-Assembly Based Tunable Absorber: Lightweight, Hydrophobic and Self-Cleaning Properties

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)

Published: May 28, 2023

Although multifunctional aerogels are expected to be used in applications such as portable electronic devices, it is still a great challenge confer multifunctionality while maintaining their inherent microstructure. Herein, simple method proposed prepare NiCo/C with excellent electromagnetic wave absorption properties, superhydrophobicity, and self-cleaning by water-induced NiCo-MOF self-assembly. Specifically, the impedance matching of three-dimensional (3D) structure interfacial polarization provided CoNi/C well defect-induced dipole primary contributors broadband absorption. As result, prepared have width 6.22 GHz at 1.9 mm. Due presence hydrophobic functional groups, improve stability humid environments obtain hydrophobicity large contact angles > 140°. This aerogel has promising absorption, resistance water or environments.

Language: Английский

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Iron-based metal-organic framework: Synthesis, structure and current technologies for water reclamation with deep insight into framework integrity

Chemosphere, Journal Year: 2021, Volume and Issue: 284, P. 131171 - 131171

Published: June 14, 2021

Water is a supreme requirement for the existence of life, contamination from point and non-point sources are creating great threat to water ecosystem. Advance tools techniques required restore quality metal-organic framework (MOFs) with tunable porous structure, striking physical chemical properties an excellent candidate it. Fe-based MOFs, which developed rapidly in recent years, foreseen as most promising overcome disadvantages traditional depolluting practices. Fe-MOFs low toxicity preferable stability possess performance potential almost all remedying contrast other MOF structures, especially visible light photocatalysis, Fenton, Fenton-like heterogeneous catalysis. become essential tool treatment due their high catalytic activity, abundant active site pollutant-specific adsorption. However, structural degradation under external chemical, photolytic, mechanical, thermal stimuli impeding further improvement activity commercialization. Understanding shortcomings integrity crucial large-scale synthesis commercial implementation Fe-MOFs-based techniques. Herein we summarize synthesis, structure advancements remediation methods using particular more attention paid adsorption, catalysis photocatalysis clear insight into mechanisms involved. For ease analysis, pollutants have been classified two major classes; inorganic organic pollutants. In this review, present first time detailed challenges employing instability.

Language: Английский

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Establishing a high-speed electron transfer channel via CuS/MIL-Fe heterojunction catalyst for photo-Fenton degradation of acetaminophen

Applied Catalysis B Environment and Energy, Journal Year: 2022, Volume and Issue: 320, P. 121979 - 121979

Published: Sept. 16, 2022

Language: Английский

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Novel BiOBr/Bi2S3 high-low junction prepared by molten salt method for boosting photocatalytic degradation and H2O2 production

Journal of Material Science and Technology, Journal Year: 2023, Volume and Issue: 155, P. 148 - 159

Published: March 17, 2023

Language: Английский

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Recent research progress and challenges of MIL-88(Fe) from synthesis to advanced oxidation process

Surfaces and Interfaces, Journal Year: 2022, Volume and Issue: 30, P. 101843 - 101843

Published: March 1, 2022

Language: Английский

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Interfacial oxygen vacancy engineering and built-in electric field mediated Z-scheme In2O3/Ag3PO4 heterojunction for boosted photocatalytic doxycycline degradation

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 489, P. 151216 - 151216

Published: April 11, 2024

Language: Английский

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A review of chloride ions removal from high chloride industrial wastewater: Sources, hazards, and mechanisms

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 353, P. 120184 - 120184

Published: Feb. 1, 2024

Language: Английский

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Tailoring thermal expansion for next-generation energy systems: Integrating the potential of NTE materials in SOFCs and beyond

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 633, P. 236460 - 236460

Published: Feb. 8, 2025

Language: Английский

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Amino-functionalized Ti-metal-organic framework decorated BiOI sphere for simultaneous elimination of Cr(VI) and tetracycline

Journal of Colloid and Interface Science, Journal Year: 2021, Volume and Issue: 607, P. 933 - 941

Published: Sept. 20, 2021

Language: Английский

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