Coral-like B-doped g-C3N4 with enhanced molecular dipole to boost photocatalysis-self-Fenton removal of persistent organic pollutants

Journal of Hazardous Materials, Год журнала: 2023, Номер 449, С. 131017 - 131017

Опубликована: Фев. 21, 2023

Язык: Английский

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Tactile Sensors: Hydroxyl Decorated Silver Metal–Organic Frameworks for Detecting Cr₂O₇^2–, MnO₄^–, Humic Acid, and Fe³⁺ Ions

ACS Applied Materials & Interfaces, Год журнала: 2023, Номер 15(13), С. 17317 - 17323

Опубликована: Март 24, 2023

Anionic, acidic, and metal ions are common contaminants in water cause serious concerns for human aquatic life. With the goal of rapid detection analytes, we herein design a new array ligand 5-(4H-1,2,4-triazol-4-yl)pyridin-3-ol-linked silver coordinated metal-organic frameworks Ag-MOFs as promising sensor Cr2O72-, MnO4-, humic acid (HA), Fe3+ down to micro level. Furthermore, evidenced by luminescence, excitation-emission matrix (EEM) spectroscopic, PXRD measurements, designed (MOFs) can be fast, stable, reusable analyte water.

Язык: Английский

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Exceptionally High Perfluorooctanoic Acid Uptake in Water by a Zirconium-Based Metal–Organic Framework through Synergistic Chemical and Physical Adsorption

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(14), С. 9811 - 9818

Опубликована: Март 26, 2024

Perfluorooctanoic acid (PFOA) is an environmental contaminant ubiquitous in water resources, which as a xenobiotic and carcinogenic agent, severely endangers human health. The development of techniques for its efficient removal therefore highly sought after. Herein, we demonstrate unprecedented zirconium-based MOF (PCN-999) possessing Zr6 biformate-bridged (Zr6)2 clusters simultaneously, exhibits exceptional PFOA uptake 1089 mg/g (2.63 mmol/g), representing ca. 50% increase over the previous record MOFs. Single-crystal X-ray diffraction studies computational analysis revealed that offer additional open coordination sites hosting PFOA. coordinated PFOAs further enhance interaction between free physical adsorption, boosting adsorption capacity to unparalleled high standard. Our findings represent major step forward fundamental understanding MOF-based mechanism, paving way toward rational design next-generation adsorbents per- polyfluoroalkyl substance (PFAS) removal.

Язык: Английский

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Polyarylimide-Based COF/MOF Nanoparticle Hybrids for CO₂ Conversion, Hydrogen Generation, and Organic Pollutant Degradation

ACS Applied Nano Materials, Год журнала: 2024, Номер 7(9), С. 10451 - 10465

Опубликована: Апрель 25, 2024

The continuous rise in atmospheric CO2 concentration, overconsumption of energy resources, and release extraordinary organic pollutants are challenging issues the modern era. Catalytic technology offers a promising solution to tackle these environmental challenges parallel by facilitating highly effective sustainable processes. Herein, we report fabrication series different nature polyarylimide (PAI)-based covalent–organic frameworks (COFs) via polycondensation reaction altering linkers, solvents, other experimental conditions. To optimize their catalytic performance, resultant PAI-COFs were further decorated with metal–organic (ZIF-67). decoration COF4 ZIF-67 led adjusted bandgaps, created an active site, enhanced charge separation migration photoexcited electron–hole (e–h) pairs, extended light absorption visible region, also facilitated transferring electrons between COFs MOFs photoelectron modulation approach. Based on our findings, it is confirmed that (MOFs) optimal catalysts compared (COF1, COF2, COF3) (ZIF-8). Interestingly, pristine COF4, 5ZIF-67/COF4 nanohybrid revealed ∼8-fold ∼5.3-fold for conversion, direct capturing, photoelectrochemical conversion faradaic efficiency 50%. Likewise, as-fabricated catalyst exhibits exceptional activities photocatalytic hydrogen production pollutant oxidation. Ultimately, this work will provide roadmap design COF-based nanohybrids applications.

Язык: Английский

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On–Off Ratiometric Fluorescence Europium(III) Metal–Organic Framework for Quantitative Detection of the Inflammatory Marker Neopterin

Inorganic Chemistry, Год журнала: 2024, Номер 63(10), С. 4697 - 4706

Опубликована: Фев. 26, 2024

Benefiting from the unique photoluminescence behavior of lanthanide(III) ions and organic ligands, a metal-organic framework (Ln-MOF) material can simultaneously demonstrate cations molecules endow its superior applications fluorescence sensing behaviors. Herein, we present europium(III) MOF {[Eu

Язык: Английский

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Self-powered photocatalytic system fabricated by bifunctional coordination polymers

Chemical Engineering Journal, Год журнала: 2024, Номер 482, С. 148854 - 148854

Опубликована: Янв. 21, 2024

Язык: Английский

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Fluorescence Turn-on Detection of Perfluorooctanoic Acid (PFOA) by Perylene Diimide-Based Metal–Organic Framework

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(25), С. 32344 - 32356

Опубликована: Май 8, 2024

A novel, water-stable, perylene diimide (PDI) based metal-organic framework (MOF), namely,

Язык: Английский

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Regulating the Energy Level of a Ratiometric Luminescent Europium(III) Metal–Organic Framework Sensor with Smartphone Assistance for Real-Time and Visual Detection of Carcinoid Biomarker

Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Фев. 18, 2025

Regulating the energy level of a lanthanide (III) metal–organic framework (Ln-MOF) via an "antenna effect" is effective strategy for achieving ratiometric luminescent dynamics carcinoid biomarker sensing application. Herein, we present europium-based MOF material {[Eu(BPDC)(μ3–OH)(H2O)2]·2.5H2O}n (Eu-MOF, H2BPDC = 2,2′-bipyridine-4,4′-dicarboxylic acid and DMF N,N-dimethylformamide), incorporating tetranuclear cubane-like [Eu4(μ3–OH)4(COO)4]4– cluster cores, 5-hydroxyindole-3-acetic (5-HIAA) detection through influence Eu3+ ions sensitized by ligands as well 5-HIAA. Luminescence titration experiments indicate Eu-MOF can demonstrate simultaneous luminescence emission signals cations 5-HIAA, resulting in on–off 5-HIAA response to concentrations demonstrating superior stability excellent performance such low limit (LOD 37.16 nM), high selectivity (Ksv 2.39 × 104 M–1), fast (≤1 min), attractive recyclability (≥five times). Derived from contribution competitive absorption coordination interactions between exhibits visually observable color change red purple naked eye illuminated ultraviolet light, confirmed fabrication portable hydrogels. More importantly, smartphone assistance based on RGB chromaticity analysis has been developed intelligent Eu-MOF@PVA Eu-MOF@PU films have proposed real-time visual thereby enhancing practical applicability quantitative trace

Язык: Английский

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Ratiometric Fluorescence Thermometry, Quantitative Gossypol Detection, and CO₂ Chemical Fixation by a Multipurpose Europium (III) Metal–Organic Framework

Inorganic Chemistry, Год журнала: 2023, Номер 62(35), С. 14168 - 14179

Опубликована: Авг. 22, 2023

A lanthanide-based molecular crystalline material endows metal–organic frameworks (MOFs) with many fascinating applications such as fluorescence detection and CO2 chemical fixation. Herein, we describe study a multipurpose europium(III) MOF the formula of {[Eu2(TATAB)2]·2.5H2O·2DMF}n (Eu-MOF) (where H3TATAB is 4,4′,4″-((1,3,5-triazine-2,4,6-triyl)tris(azanediyl))tribenzoic acid ligand) for photoluminescence sensor matrix This Eu-MOF features 1D square channels along c direction pore size ca.14.07 Å × 14.07 Å, occupied by lattice water DMF molecules. The obtained can achieve simultaneous luminescence ligand Eu3+ ions, which be developed ratiometric thermometry. demonstrates an obvious color change from red to yellow temperature rises 303 373 K has satisfying relative sensitivity 3.21% K–1 small uncertainty 0.0093 at 333 K. Moreover, sensitive gossypol was achieved quenching constant Ksv 1.18 105 M–1 limit 4.61 μM. combination competitive absorption photoinduced electron transfer caused host–guest interactions strengthened π–π packing effect synergistically between molecules skeleton realizes "turn-off" sensing gossypol. Importantly, nature allows showing fixation under mild conditions. Thus, utilized thermometry, quantitative detection,

Язык: Английский

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A turn-on fluorescent Zn(ii) metal–organic framework sensor for quantitative anthrax biomarker detection

Dalton Transactions, Год журнала: 2023, Номер 52(18), С. 6067 - 6076

Опубликована: Янв. 1, 2023

2,6-Pyridine dicarboxylic acid (DPA) is considered one of the main anthrax biomarkers, and detection DPA great significance. This work presents a Zn(II)-based metal-organic framework (MOF) with formula {[Zn2(2,6-NBC)2(vlpy)Zn(2,6-NBC)(vlpy)0.5]·0.8(2,6-H2NBC)·H2O}n (1) assembled from 2,6-naphthalenedicarboxylic (2,6-H2NBC) 4,4'-vinylenedipyridine (vlpy) for photoluminescence sensor matrix detection. 1 features 3D pillar-layer nanopore sizes ca.13.165 Å × 12.731 Å, 12.725 11.018 13.114 13.165 along three directions, occupied by lattice water disordered 2,6-H2NBC molecules. The obtained can be used as turn-on fluorescence high selectivity, excellent sensitivity recyclability. luminescence demonstrates an obvious color change blue to purplish concentration rises. Furthermore, linear correlation presented between low 0-0.3 mM, limit reach 128 nM, much lower than that infectious dose human spores (60 μM). A test paper fabricated detect rapidly through change. DFT calculations indicate intermolecular photoinduced electron-transfer transition hydrogen-bonding interaction molecules skeleton induces "turn-on" sensing behavior.

Язык: Английский

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