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

Journal of Hazardous Materials, Journal Year: 2023, Volume and Issue: 449, P. 131017 - 131017

Published: Feb. 21, 2023

Language: 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, Journal Year: 2023, Volume and Issue: 15(13), P. 17317 - 17323

Published: March 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.

Language: 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, Journal Year: 2024, Volume and Issue: 146(14), P. 9811 - 9818

Published: March 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.

Language: Английский

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

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(9), P. 10451 - 10465

Published: April 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.

Language: Английский

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

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(10), P. 4697 - 4706

Published: Feb. 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

Language: Английский

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Self-powered photocatalytic system fabricated by bifunctional coordination polymers

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 482, P. 148854 - 148854

Published: Jan. 21, 2024

Language: 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, Journal Year: 2023, Volume and Issue: 62(35), P. 14168 - 14179

Published: Aug. 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,

Language: Английский

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

Dalton Transactions, Journal Year: 2023, Volume and Issue: 52(18), P. 6067 - 6076

Published: Jan. 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.

Language: Английский

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

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(25), P. 32344 - 32356

Published: May 8, 2024

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

Language: Английский

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Bacterial Cellulose–Based MOF Hybrid as a Sensitive Switch Off–On Luminescent Sensor for the Selective Recognition of l-Histidine

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(7), P. 3560 - 3571

Published: Feb. 8, 2024

In this study, a stable and luminescent UiO-66-NH2 (UN) its derivative Cu2+@UN were prepared utilized successfully as an Off–On sensing platform for effective, selective, well rapid (5 min) detection of l-Histidine (l-His). The UN reveals efficient quenching in the presence Cu2+ ions through photoinduced electron transition (PET) mechanism dynamic process (in range 0.01–1 mM) forming platform. However, due to remarkable affinity between l-His Cu2+, luminescence is recovered indicating Turn-On behavior via quencher detachment (QD). A good linear relationship concentration intensity was observed 0.01–40 μM (R2 = 0.9978) with limit 7 nM sensing. suggested method determination real samples recoveries satisfying consequences. Moreover, result indicates that only induces significant restoration signal significantly greater than other amino acids. Also, portable test paper based on bacterial cellulose (BC) Cu2+@UNBC developed conveniently evaluate effective l-His.

Language: Английский

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