Oxygen Doping Cooperated with Co‐N‐Fe Dual‐Catalytic Sites: Synergistic Mechanism for Catalytic Water Purification within Nanoconfined Membrane

Advanced Materials, Год журнала: 2024, Номер 36(30)

Опубликована: Май 14, 2024

Abstract Atom‐site catalysts, especially for graphitic carbon nitride‐based represents one of the most promising candidates in catalysis membrane water decontamination. However, unravelling intricate relationships between synthesis‐structure–properties remains a great challenge. This study addresses impacts coordination environment and structure units metal central sites based on Mantel test, correlation analysis, evolution sites. An optimized unconventional oxygen doping cooperated with Co‐N‐Fe dual‐sites (OCN Co/Fe) exhibits synergistic mechanism efficient peroxymonosulfate activation, which benefits from significant increase charge density at active regulation natural population orbitals, leading to selective generation SO 4 •− . Building upon these findings, OCN‐Co/Fe/PVDF composite demonstrates 33 min −1 ciprofloxacin (CIP) rejection efficiency maintains over 96% CIP removal (over 24 h) an average permeance 130.95 L m −2 h work offers fundamental guide elucidating definitive origin catalytic performance advance oxidation process facilitate rational design separation improved enhanced stability.

Язык: Английский

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Highly Porous Yet Transparent Mechanically Flexible Aerogels Realizing Solar-Thermal Regulatory Cooling

Nano-Micro Letters, Год журнала: 2024, Номер 16(1)

Опубликована: Фев. 26, 2024

The demand for highly porous yet transparent aerogels with mechanical flexibility and solar-thermal dual-regulation energy-saving windows is significant but challenging. Herein, a delaminated aerogel film (DAF) fabricated through filtration-induced gelation ambient drying. process involves the assembly of fluorinated cellulose nanofiber (FCNF) at solid-liquid interface between filter filtrate during filtration, resulting in formation lamellar FCNF hydrogels strong intra-plane weak interlayer hydrogen bonding. By exchanging solvents from water to hexane, bonding hydrogel further enhanced, enabling DAF intra-layer mesopores upon lightweight ultra-flexible, which possesses desirable properties high visible-light transmittance (91.0%), low thermal conductivity (33 mW m

Язык: Английский

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Synergistic Performance of ZnO/SnO2 Nanocomposites: Synthesis, Characterization, and Applications in Photocatalysis and Superoxide Radical Scavenger

Journal of Cluster Science, Год журнала: 2024, Номер 35(7), С. 2231 - 2242

Опубликована: Июнь 2, 2024

Язык: Английский

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Nanoengineering of ultrathin N-CQDs/Bi2WO6 S-scheme heterojunction for enhanced photodegradation of antibiotics as emerging contaminants: Mechanism insight and toxicity assessment

Separation and Purification Technology, Год журнала: 2025, Номер unknown, С. 131717 - 131717

Опубликована: Янв. 1, 2025

Язык: Английский

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Unlocking the unique catalysts of CoTiO3/BiVO4@MIL-Fe(53) for improving Cr(VI) reduction and tetracycline degradation

Carbon Neutrality, Год журнала: 2024, Номер 3(1)

Опубликована: Июнь 1, 2024

Abstract Environmental contamination by hexavalent chromium (Cr(VI)) and antibiotic drug residues pose significant challenges to public health ecosystems. This study investigates the application of CoTiO 3 /BiVO 4 @MIL-Fe(53) (CT/BV@Fe-MOF) for reduction Cr(VI) degradation tetracycline (TCL) under visible light. After grafting an iron-based metal–organic framework MIL-Fe(53) on a modified composite, photogenerated electrons could easily be transferred from BiVO /Fe-MOF species via interfacial charge transfer. UV–vis diffuse reflectance spectroscopy showed that carriers were formed in response light absorption. The effect different operating parameters, including catalyst load, pH, initial Cr(VI), TCL concentration, was systematically evaluated during photocatalytic process. CT/BV@Fe-MOF composite exhibited 98.7% efficiency (50 ppm) 97.5% towards (30 within 90 min, resulting greater than pristine , Fe-MOF materials. displayed excellent stability over six cycles, highlighting its potential practical applications. In addition, plausible pathway using LC-ESI/MS analysis, while TEST program utilized investigate toxicity products generated

Язык: Английский

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Twin S‐Scheme Heterojunction ZnO/UiO‐66‐NH₂@ZnIn₂S₄ Rhombic Octahedra for Efficient Photocatalytic H₂ Evolution

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 3, 2025

Abstract Amid increasing fossil energy scarcity, a key solution is using solar to split water into hydrogen (H 2 ). However, single photocatalysts face limitations of low utilization rate and rapid carrier recombination, so constructing novel composite promising solution. Here, ZnO/UiO‐66‐NH @ZnIn S 4 (ZUN@ZIS) catalyst with twin S‐scheme heterojunction constructed for the first time, in which ZnIn (ZIS) nanosheets are grown situ on surface (ZUN) rhombic octahedra. Under irradiation visible light without help any co‐catalyst, H evolution prepared ZUN@ZIS‐20 5.05 mmol g −1 h , 3.7, 2.1 46 times higher than that ZIS, UiO‐66‐NH /ZIS (UN/ZIS) ZUN, respectively. Moreover, synergistic effect resulting ZUN@ZIS facilitates provision efficient channels carrier/mass transfer ensures structural stability. Various experimental characterizations theoretical calculations confirm by ZUN ZIS can facilitate easy separation photogenerated carriers. This study has developed new idea multi‐heterojunction photocatalysts, provided valuable reference development photocatalysis technology.

Язык: Английский

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Comparative study of peroxymonosulfate activation with H2O2 activation by Cu–N doped biochar derived from peach gum network for rapid antibiotic removal

Journal of Colloid and Interface Science, Год журнала: 2025, Номер unknown

Опубликована: Март 1, 2025

Язык: Английский

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Enhanced photocatalytic degradation of tetracycline by Mn,S co-doped TiO2 under visible-light irradiation

Journal of Photochemistry and Photobiology A Chemistry, Год журнала: 2025, Номер unknown, С. 116423 - 116423

Опубликована: Апрель 1, 2025

Язык: Английский

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Modulating the covalency of Ru-O bonds by dynamic reconstruction for efficient acidic oxygen evolution

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Апрель 13, 2025

Developing ruthenium-based oxide catalysts capable of suppressing lattice oxygen participation in the catalytic reaction process is crucial for maintaining stable evolution (OER) under acidic conditions. Herein, we delicately construct a RuO2 nanoparticle-anchored LiCoO2 nanosheet electrocatalyst (RuO2/LiCoO2), achieving dynamic optimization during and improving stability. Benefiting from unique electrochemical delithiation characteristics support, covalency Ru-O bond effectively regulated OER process. The weakened covalent inhibits ensures continuous operation Ru active sites. Moreover, extended optimized RuO2/LiCoO2 catalyst reduces formation energy barrier *OOH intermediates, accelerating progress OER. As result, requires only an overpotential 150 ± 2 mV at 10 mA cm-2 0.5 M H2SO4 operates stably 2000 h 1 A proton exchange membrane water electrolysis. This work opens new avenues designing efficient catalysts.

Язык: Английский

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MXene-based materials for efficient applications in perovskite solar cells: A review

Journal of Material Science and Technology, Год журнала: 2024, Номер 215, С. 214 - 232

Опубликована: Июль 29, 2024

Язык: Английский

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