High-efficient peroxymonosulfate activation for rapid atrazine degradation by FeSx@MoS2 derived from MIL-88A(Fe)

Journal of Hazardous Materials, Journal Year: 2022, Volume and Issue: 440, P. 129723 - 129723

Published: Aug. 6, 2022

Language: Английский

---

Crystallinity engineering for overcoming the activity–stability tradeoff of spinel oxide in Fenton-like catalysis

Proceedings of the National Academy of Sciences, Journal Year: 2023, Volume and Issue: 120(15)

Published: April 5, 2023

A precise modulation of heterogeneous catalysts in structural and surface properties promises the development more sustainable advanced oxidation water purification technologies. However, while with superior decontamination activity selectivity are already achievable, maintaining a long-term service life such materials remains challenging. Here, we propose crystallinity engineering strategy to break activity-stability tradeoff metal oxides Fenton-like catalysis. The amorphous/crystalline cobalt-manganese spinel oxide (A/C-CoMnOx) provided highly active, hydroxyl group-rich surface, moderate peroxymonosulfate (PMS)-binding affinity charge transfer energy strong pollutant adsorption, trigger concerted radical nonradical reactions for efficient mineralization, thereby alleviating catalyst passivation by intermediate accumulation. Meanwhile, surface-confined reactions, benefited from enhanced adsorption pollutants at A/C interface, rendered A/C-CoMnOx/PMS system ultrahigh PMS utilization efficiency (82.2%) unprecedented (rate constant 1.48 min-1) surpassing almost all state-of-the-art catalysts. cyclic stability environmental robustness real treatment was also demonstrated. Our work unveils critical role material modulating catalytic pathways oxides, which fundamentally improves our understanding structure-activity-selectivity relationships may inspire design application beyond.

Language: Английский

---

Derivatives of two-dimensional MXene-MOFs heterostructure for boosting peroxymonosulfate activation: Enhanced performance and synergistic mechanism

Applied Catalysis B Environment and Energy, Journal Year: 2022, Volume and Issue: 323, P. 122136 - 122136

Published: Nov. 1, 2022

Language: Английский

---

Nearly zero peroxydisulfate consumption for persistent aqueous organic pollutants degradation via nonradical processes supported by in-situ sulfate radical regeneration in defective MIL-88B(Fe)

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 331, P. 122699 - 122699

Published: March 27, 2023

Language: Английский

---

Activation of peroxymonosulfate with cobalt embedded in layered δ-MnO2 for degradation of dimethyl phthalate: Mechanisms, degradation pathway, and DFT calculation

Journal of Hazardous Materials, Journal Year: 2023, Volume and Issue: 451, P. 130901 - 130901

Published: Jan. 31, 2023

Language: Английский

---

Oxygen vacancies-rich α@δ-MnO2 mediated activation of peroxymonosulfate for the degradation of CIP: The role of electron transfer process on the surface

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 458, P. 141415 - 141415

Published: Jan. 12, 2023

Language: Английский

---

Transformative Removal of Aqueous Micropollutants into Polymeric Products by Advanced Oxidation Processes

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(11), P. 4844 - 4851

Published: Feb. 22, 2024

This perspective presents the latest advancements in selective polymerization pathways advanced oxidation processes (AOPs) for removal of featured organic pollutants wastewater. In radical-based homogeneous reactions, SO4• –-based systems exhibit superior oxidative activity toward aromatics with electron-donating substituents via single electron transfer and radical adduct formation (RAF). The produced cations subsequently undergo coupling reactions to produce polymers. For •OH-based oxidation, metal ions facilitate production monomer radicals RAF. Additionally, heterogeneous catalysts can mediate both persulfate activation without generating inorganic radicals. Metal-based will a direct pathway polymerization. contrast, carbon-based induce low-molecular-weight oligomers (≤4 units) an process. comparison mineralization, remarkably reduce peroxide usage, quickly separate from aqueous phase, generate polymeric byproducts. Thus, AOP-driven hold significant promise reducing carbon emission realizing recycling water treatment processes.

Language: Английский

---

Size‐Dependent Catalysis in Fenton‐like Chemistry: From Nanoparticles to Single Atoms

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(28)

Published: April 24, 2024

Abstract State‐of‐the‐art Fenton‐like reactions are crucial in advanced oxidation processes (AOPs) for water purification. This review explores the latest advancements heterogeneous metal‐based catalysts within AOPs, covering nanoparticles (NPs), single‐atom (SACs), and ultra‐small atom clusters. A distinct connection between physical properties of these catalysts, such as size, degree unsaturation, electronic structure, state, their impacts on catalytic behavior efficacy reactions. In‐depth comparative analysis metal NPs SACs is conducted focusing how particle size variations metal‐support interactions affect species pathways. The highlights cutting‐edge characterization techniques theoretical calculations, indispensable deciphering complex structural characteristics active sites downsized particles. Additionally, underscores innovative strategies immobilizing onto membrane surfaces, offering a solution to inherent challenges powdered catalysts. Recent advances pilot‐scale or engineering applications Fenton‐like‐based devices also summarized first time. paper concludes by charting new research directions, emphasizing catalyst design, precise identification reactive oxygen species, in‐depth mechanistic studies. These efforts aim enhance application potential nanotechnology‐based AOPs real‐world wastewater treatment.

Language: Английский

---

Enhanced electron transfer-based nonradical activation of peroxymonosulfate by CoNx sites anchored on carbon nitride nanotubes for the removal of organic pollutants

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 466, P. 143155 - 143155

Published: April 23, 2023

Language: Английский

---

Carbon redirection via tunable Fenton-like reactions under nanoconfinement toward sustainable water treatment

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: April 1, 2024

Abstract The ongoing pattern shift in water treatment from pollution control to energy recovery challenges the energy-intensive chemical oxidation processes that have been developed for over a century. Redirecting pathways of carbon evolution molecular fragmentation polymerization is critical harvesting during oxidation, yet regulation means remain be exploited. Herein, by confining widely-studied system—Mn 3 O 4 catalytic activation peroxymonosulfate—inside amorphous nanotubes (ACNTs), we demonstrate contaminant conversion can readily modulated spatial nanoconfinement. Reducing pore size ACNTs 120 20 nm monotonously improves pathway selectivity toward oligomers, with yield one order magnitude higher under 20-nm nanoconfinement than bulk. interactions Mn ACNTs, reactant enrichment, and pH lowering are evidenced collectively account enhanced polymerization. This work provides an adaptive paradigm redirection variety sustainable purification.

Language: Английский

---