Fabrication of TiO₂/MOF Type II Heterojunction by Growth of TiO₂ on Cr-Based MOF for Enhanced Photocatalytic Hydrogen Production

Crystal Growth & Design, Год журнала: 2025, Номер unknown

Опубликована: Фев. 5, 2025

MOF-based heterojunctions can significantly enhance the efficiency of photocatalytic hydrogen production; however, construction efficient remains a formidable challenge. In this study, we successfully developed series Type II by growing TiO2 on Cr-based MOF, thereby regulating generation, separation, and transportation photogenerated charge carriers to improve evolution performance. Among these, 23%TiO2/MIL-101(Cr) photocatalyst exhibited highest production activity, achieving 884.01 μmol g–1 in just 5 h, which is 6.8 6.0 times that pure MIL-101(Cr) TiO2, respectively. Additionally, demonstrated excellent cyclic stability. Tiny particles were proven mainly deposited surface N2 sorption isotherm analyses, transmission electron microscopy (TEM), high-resolution TEM, high-angle annular dark field scanning microscopy, etc. Characterization techniques such as situ XPS confirmed formation TiO2/MIL-101(Cr) heterostructure. Band structure analysis indicates meets thermodynamic requirements for production. Furthermore, transient photocurrent measurements, electrochemical impedance analysis, photoluminescence reveal possesses superior capabilities carrier transport, resulting from kinetic perspective. This research offers valuable insights into preparation development photocatalysts

Язык: Английский

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Inorganic/organic hybrid interfacial internal electric field modulated charge separation of resorcinol-formaldehyde resin for boosting photocatalytic H2O2 production

Chemical Engineering Journal, Год журнала: 2024, Номер 497, С. 154886 - 154886

Опубликована: Авг. 23, 2024

Язык: Английский

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Microwave–Driven Interface Engineering Enhancing Electron Flow for Highly Efficient Solar NO Oxidation over rGO-Integrated NH₂-MIL125(Ti)/TiO₂

ACS Sustainable Chemistry & Engineering, Год журнала: 2025, Номер unknown

Опубликована: Март 1, 2025

Interface design plays a pivotal role in developing high-performance photocatalysts for NO oxidation. In this work, hierarchical rGO-integrated NH2-MIL125(Ti)/TiO2 photocatalyst was constructed using combined liquid-phase and solid-phase microwave synthesis approach. The process enabled the precise deposition of NH2-MIL125(Ti) on graphene oxide (GO), forming strong interfacial bonds, while thermal shock (SMTS) transformed GO into rGO induced formation TiO2 nanoparticles. This structure established an efficient electron transport pathway, promoting charge separation directional transfer to activate O2 generate superoxide radicals (•O2–) as primary reactive species. resulting achieved remarkable oxidation performance, with 81.2% removal efficiency NO3– selectivity 98.5% under simulated sunlight. study highlights potential microwave–driven interface engineering innovative environmentally sustainable applications.

Язык: Английский

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Nitrogen Defects and Interfacial Chemical Bonds in Fe Single‐Site Mediated C₃N₄ With Rod‐Like Fe₂O₃ Enhanced the S‐Scheme Heterojunction for Efficient Energy Conversion

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 16, 2025

Abstract The rational design of S‐scheme heterojunctions holds significant potential for efficient photocatalytic energy conversion, attributed to their enhanced carrier separation efficiency and high redox capacity. Nevertheless, achieving precise control transfer dynamics in remains a substantial challenge. Herein, unique architecture is devised featuring porous rod‐shaped Fe 2 O 3 particles loaded onto single‐sites modified g‐C N 4 nanosheets via mediated heterocomponent anchorage, the directed growth using as anchoring points, thereby forming O─Fe─N interfacial chemical bonds (ICBs) generating abundant nitrogen defects (FeO/FeCN‐N v ). Photophysical processes are further investigated femtosecond transient absorption spectroscopy (fs‐TAS) situ irradiated X‐ray photoelectron (ISI‐XPS) with an adjustable wavelength irradiation light source. Encouragingly, results reveal internal electric field (IEF) constructed at these semicoherent phase boundaries, creating asymmetrical charge distribution. Simultaneously, introduce additional defect level that accelerates electron through IEF, enabling more rapid migration surface‐active sites both styrene epoxidation hydrogen evolution. synergistic effect ICBs coupling regulating offers new insights into photocatalysis, paving way advancements conversion.

Язык: Английский

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Boosting Photocatalytic CO₂ Cycloaddition with Epoxide over Facet-Dependent Cu₂O@Cu₃(HHTP)₂ Heterojunctions

ACS Applied Optical Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 12, 2025

Язык: Английский

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Novel ZIF-8/ZnIn2S4 heterojunction efficiently generates hydrogen peroxide via dual-channel reactions driven by visible light in air

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160930 - 160930

Опубликована: Фев. 1, 2025

Язык: Английский

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Picolinamide Functionalization on Carbon Nitride Edges for Enhanced Charge Separation and Photocatalytic Hydrogen Evolution

Nanomaterials, Год журнала: 2025, Номер 15(5), С. 361 - 361

Опубликована: Фев. 26, 2025

The periodical distribution of N and C atoms in carbon nitride (CN) not only results localized electrons each tri-s-triazine unit, but oxidation reduction sites are close contact spatially, resulting severe carrier recombination. Herein, the hydrothermal method was first employed to synthesize (HCN), then picolinamide (Pic) molecules were introduced at edge so that photo-generated whole structure system transferred from center edge, which effectively promoted separation carriers inhibited recombination structure. changed π-conjugated entire also acted as an electron-withdrawing group promote charge transfer. photocatalytic hydrogen evolution rate (HER) optimized HCN-Pic-1:1 sample could reach 918.03 μmolg-1 h-1, 11.8 times higher than HCN, performance improved.

Язык: Английский

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Ni‐BDC MOF/MnO₂ Composite for Highly Efficient CO₂ Photoreduction to CO and CH₄ Under Visible Light

ChemistrySelect, Год журнала: 2025, Номер 10(11)

Опубликована: Март 1, 2025

Abstract MOF‐based composites with semiconductors offer synergistic effects, such as broader light absorption, improved charge carrier separation, and more active catalytic sites, all of which enhance the overall performance MOFs in CO 2 reduction. This study presents development characterization a Ni‐BDC MOF/MnO composite for photocatalytic reduction under visible light. The MOF bandgap 3.16 eV was integrated γ‐MnO , light‐absorbing semiconductor to improve separation extend absorption. resulting exhibited reduced 2.7 eV, enabling efficient CH 4 . Structural, optical, electrochemical analyses confirmed intimate interaction between MnO enhancing dynamics. optimized achieved high yields (56.97 µmol g⁻¹) (23.5 after 6 h irradiation, enhanced stability minimal electron‐hole recombination. mechanistic revealed multiple intermediates involved reduction, providing insights into pathways formation. work offers sustainable approach conversion potential applications greenhouse gas mitigation energy production.

Язык: Английский

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Three Birds with One Stone: A Piezo-Photocatalytic System for Synergistic Environmental Remediation through Simultaneous Ionic Liquids Degradation, H2 Production, and Uranium Reduction

Applied Catalysis B Environment and Energy, Год журнала: 2025, Номер unknown, С. 125314 - 125314

Опубликована: Март 1, 2025

Язык: Английский

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Crystal OH boosting piezocatalytic H2O2 synthesis by Bi3O(PO4)2OH from pure water for atrazine degradation

Separation and Purification Technology, Год журнала: 2025, Номер unknown, С. 132786 - 132786

Опубликована: Апрель 1, 2025

Язык: Английский

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