Chemical Bonding of g-C₃N₄/UiO-66(Zr/Ce) from Zr and Ce Single Atoms for Efficient Photocatalytic Reduction of CO₂ under Visible Light

ACS Catalysis, Год журнала: 2023, Номер 13(7), С. 4597 - 4610

Опубликована: Март 21, 2023

The most promising approach to mitigating the greenhouse effect and tackling energy crisis is convert carbon dioxide into valuable liquid fuels through artificial photosynthesis. Nevertheless, photocatalysts have poor product selectivity, low catalytic performance, cycling stability. Herein, we synthesized novel UiO-66(Zr/Ce) nanosheets bonding on g-C3N4 [g-C3N4/UiO-66(Zr/Ce)] by an in situ method using single atoms of Zr Ce as metal sources, are linked via N–Zr/Ce–O bonds g-C3N4/UiO-66 interface. Chemical close contact between with a two-dimensional structure accelerate transmission electrons significantly suppresses quenching photogenerated carriers. Furthermore, doping g-C3N4/UiO-66(Zr/Ce) concentrates around atoms, making multielectron CO2 reduction reaction more favorable. Without adding any sacrificial agent, shows efficient CH3OH (54.71 μmol h–1 g–1) C2H5OH (38.10 g–1). Moreover, TOF value composite catalyst 28 times that bulk UiO-66(Zr/Ce). It exhibits excellent stability thanks strong coordination catalyst. After 12 cycles, photocatalytic performance does not decrease.

Язык: Английский

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Insight into the degradation mechanism of mixed VOCs oxidation over Pd/UiO-66(Ce) catalysts: Combination of operando spectroscopy and theoretical calculation

Separation and Purification Technology, Год журнала: 2024, Номер 354, С. 129443 - 129443

Опубликована: Сен. 1, 2024

Язык: Английский

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One-pot synthesis of oxygen-vacancy-rich Cu-doped UiO-66 for collaborative adsorption and photocatalytic degradation of ciprofloxacin

The Science of The Total Environment, Год журнала: 2021, Номер 815, С. 151962 - 151962

Опубликована: Ноя. 27, 2021

Язык: Английский

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Selective adsorption of dyes and pharmaceuticals from water by UiO metal–organic frameworks: A comprehensive review

Polyhedron, Год журнала: 2021, Номер 210, С. 115515 - 115515

Опубликована: Окт. 4, 2021

Язык: Английский

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Recent innovations in synthesis/characterization of advanced nano-porous metal-organic frameworks (MOFs); current/future trends with a focus on the smart anti-corrosion features

Materials Chemistry and Physics, Год журнала: 2021, Номер 276, С. 125420 - 125420

Опубликована: Ноя. 8, 2021

Язык: Английский

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Recent advances in metal-organic-framework-based catalysts for thermocatalytic selective oxidation of organic substances

Chem Catalysis, Год журнала: 2022, Номер 2(5), С. 1009 - 1045

Опубликована: Март 14, 2022

Язык: Английский

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Synthesis and uranium adsorption studies of UiO-66 (Ce) based metal organic frameworks from aqueous solutions

Microporous and Mesoporous Materials, Год журнала: 2022, Номер 341, С. 112108 - 112108

Опубликована: Июль 14, 2022

Язык: Английский

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“Adsorptive removal of Congo Red dye from its aqueous solution by Ag–Cu–CeO2 nanocomposites: Adsorption kinetics, isotherms, and thermodynamics”

Heliyon, Год журнала: 2023, Номер 9(11), С. e22027 - e22027

Опубликована: Ноя. 1, 2023

Eliminating synthetic dyes and organic contaminants from water is crucial for safeguarding human health preserving the environment. In this study, we explored effectiveness of Ag-Cu-CeO2 nanocomposites as adsorbents to remove Congo Red dye water. Three compositions (10:20:70, 15:15:70, 20:10:70) have been synthesized by aqueous coprecipitation method. A comprehensive analysis was performed different techniques including X-ray diffraction, Fourier transform infrared spectroscopy, BET surface area determination, Thermogravimetric analysis, Scanning electron microscopy, TEM. The a dimension 5 ± 1 nm high (51.832-78.361 m2g-1). Among these, nanocomposite with composition 15:15:70 showed highest adsorption capacity 4.71 mg/g (96.83 % removal) 0.8 × 10-4 M (55.6 mg/l) solution at pH values 2 20 °C contact time 3h. data best fitted in Freundlich isotherm pseudo-second-order kinetic model. negative enthalpy variation (-27.57, -26.43, -16.73 kJ/mol) demonstrated that spontaneous exothermic. cycling run mere 12 deactivation after five cycles use thus indicating hold great potential effective eco-friendly

Язык: Английский

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Construction of S-scheme heterojunction via incorporating g-C3N4 into Ce-based MOFs for promotion of charge-transfer in photocatalytic Cr(VI) detoxification

Journal of environmental chemical engineering, Год журнала: 2023, Номер 11(3), С. 110169 - 110169

Опубликована: Май 20, 2023

Язык: Английский

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Ultrasound Trigger Ce‐Based MOF Nanoenzyme For Efficient Thrombolytic Therapy

Advanced Science, Год журнала: 2024, Номер 11(20)

Опубликована: Апрель 4, 2024

Abstract The inflammatory damage caused by thrombus formation and dissolution can increase the risk of thrombotic complications on top cell death organ dysfunction itself. Therefore, a rapid precise thrombolytic therapy strategy is in urgent need to effectively dissolve resist oxidation simultaneously. In this study, Ce‐UiO‐66, cerium‐based metal–organic framework (Ce‐MOF) with reactive oxygen species (ROS) scavenging properties, encapsulated low‐immunogenic mesenchymal stem membrane inflammation‐targeting used construct targeted nanomedicine Ce‐UiO‐CM. Ce‐UiO‐CM applied combination external ultrasound stimulation for rat femoral artery. Ce‐UiO‐66 has abundant Ce (III)/Ce (IV) coupling sites that react hydrogen peroxide (H 2 O ) produce oxygen, exhibiting catalase (CAT) activity. multi‐cavity structure generate electron holes, its pore channels act as micro‐reactors further enhance ROS capacity. Additionally, porous produced reaction H may cavitation effects ultrasound, thereby improving thrombolysis efficacy.

Язык: Английский

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