In Situ Anchoring of Co Single Atoms within Keto-Enamine COFs via the Coordination of an Interlayer N Atom with Co for the Enhanced Photocatalytic CO₂ Reduction Efficiency

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Апрель 24, 2025

Single-atom catalysts (SACs) are prone to agglomeration or migration during catalytic processes, making the development of highly dispersible SACs greatly essential for performance photocatalytic CO2 reduction. Herein, cobalt-containing keto-enamine covalent organic frameworks (COFs) (Co/TpPa-1) successfully in situ synthesized by utilizing interlayer nitrogen atom coordinated with metallic cobalt, which is used effectively prevent monometallic atoms ensure homogeneous dispersion resulting metalized COFs. In reduction, Co/TpPa-1 composite exhibits significantly enhanced compared TpPa-1 The CO yield 0.05 mM approximately 414.5 μmol g-1 h-1, representing a two-order-of-magnitude improvement over COF catalyst (approximately 4.15 h-1). Moreover, shows 99.45% selectivity and good stability, maintaining 97% reduction rate after four cycles. reason lies fact that interaction between monatomic Co COFs enhances visible light absorption extends lifetime photogenerated carriers promoting electron transfer through loaded Co. This work provides new idea synthesis high selectivity.

Язык: Английский

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Fabrication of Mesoporous Ion-Imprinted Fluorescent Sensors for Rapid and Reliable Cu2+ Detection in Aqueous Environments

Results in Surfaces and Interfaces, Год журнала: 2025, Номер unknown, С. 100533 - 100533

Опубликована: Апрель 1, 2025

Язык: Английский

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Construction of built-in electric field within ZIF-67/BCN heterojunction for high selectivity photocatalytic CO2 conversion

Chemical Engineering Journal, Год журнала: 2025, Номер 514, С. 163139 - 163139

Опубликована: Апрель 28, 2025

Язык: Английский

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In Situ Construction of the van Der Waals Heterojunction Based on Co₃O₄/g-C₃N₄ for the Highly Efficient Degradation of Tetracycline under Visible Light

Langmuir, Год журнала: 2025, Номер unknown

Опубликована: Май 11, 2025

Advanced oxidation processes have been increasingly applied to degrade organic pollutants through the generation of strong oxidizing radicals by catalyst activation reactions. In this study, Co3O4/g-C3N4 van der Waals heterojunction (CCN) was successfully prepared calcining a mixture Co3O4 and g-C3N4 (BCN) in order improve performance elucidate mechanism CCN-activated peroxymonosulfate (PMS) catalytic degradation tetracycline (TC) under visible light. This unique nanostructure possesses an abundance active sites, thus significantly facilitating transport charge. The TC removal rate optimized reaches 300.1 × 10-3 min-1 within 10 min light, nearly 46.2 times that BCN. dominated h+ 1O2. pathways were analyzed detail. reduced toxicity intermediates reveals potential risk environment posed CCN-3/PMS system. Finally, preliminary economic analysis process carried out. study provides simple promising route for efficient PMS CCN photocatalytic remediation water pollution.

Язык: Английский

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N-doping of TiO2 for enhanced CO2 photocatalytic reduction and research on reaction mechanisms

Carbon letters, Год журнала: 2025, Номер unknown

Опубликована: Май 18, 2025

Язык: Английский

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Preparation of Biochar-Loaded Er3+-Doped BiOCl Ultrathin Nanosheets Composite Photocatalysts and Their Photodegradation Performance of TC-HCl

Catalysts, Год журнала: 2024, Номер 14(12), С. 874 - 874

Опубликована: Ноя. 29, 2024

In this study, biochar-loaded E3+:BiOCl (C/3E3+:BiOCl) was synthesized with varying levels of E3+ doping using a one-step solvothermal method and used for tetracycline hydrochloride (TC-HCl) degradation. Their structure, shape morphology were not only characterized by power X-ray diffraction (XRD), scanning electron microscope (SEM) transmission microscopy (TEM) but also UV-vis diffuse reflectance spectra upconversion (UC). The results indicated significant enhancement in the photocatalytic activity catalyst following introduction Er3+. composite material C/3E3+:BiOCl, concentration 3 mol%, demonstrated highest activity, achieving an impressive visible light degradation efficiency 89.2% TC HCl within 90 min. This marks increase 33.5% compared to BiOCl monomer 17.4% C/BiOCl. Additionally, when exposed wavelengths exceeding 600 nm, C/3E3+:BiOCl maintained photodegradation 44.3%, while C/BiOCl showed no under same conditions. finding highlights effectiveness as matrix, which enhances performance through effect transfer mechanisms associated biochar.

Язык: Английский

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