In Situ Construction of Interface with Photothermal and Mutual Catalytic Effect for Efficient Solar‐Driven Reversible Hydrogen Storage of MgH₂

Advanced Science, Год журнала: 2024, Номер 11(22)

Опубликована: Март 22, 2024

Abstract Hydrogen storage in MgH 2 is an ideal solution for realizing the safe of hydrogen. High operating temperature, however, required hydrogen induced by high thermodynamic stability and kinetic barrier. Herein, flower‐like microspheres uniformly constructed N‐doped TiO nanosheets coated with TiN nanoparticles are fabricated to integrate light absorber thermo‐chemical catalysts at a nanometer scale driving using solar energy. situ transformed into x O y Ti/TiH distributed inside matrix during cycling, which pairs serve as absorbers that exhibit strong localized surface plasmon resonance effect full‐spectrum absorbance capability. On other hand, it theoretically experimentally demonstrated intimate interface between TiH can not only thermodynamically kinetically promote H desorption from but also simultaneously weaken Ti─H bonds hence turn improve combination weakened bonds. The uniform integration photothermal catalytic leads direct action heat generated on initiating capacity 6.1 wt.% under 27 sun.

Язык: Английский

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Charge carrier controlled free radical construction efficient photocatalytic self-Fenton system

Chemical Engineering Journal, Год журнала: 2024, Номер 496, С. 154351 - 154351

Опубликована: Июль 27, 2024

Язык: Английский

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Dual-mode SERS/colorimetric sensing of nitrite in meat products based on multifunctional au NPs@COF composite

Food Chemistry, Год журнала: 2024, Номер 457, С. 140166 - 140166

Опубликована: Июнь 21, 2024

Язык: Английский

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Advances in hybrid strategies for enhanced photocatalytic water splitting: Bridging conventional and emerging methods

Applied Physics Reviews, Год журнала: 2024, Номер 11(4)

Опубликована: Окт. 8, 2024

Significant efforts have been dedicated to hydrogen production through photocatalytic water splitting (PWS) over the past five decades. However, achieving commercially viable solar-to-hydrogen conversion efficiency in PWS systems remains elusive. These face intrinsic and extrinsic challenges, such as inadequate light absorption, insufficient charge separation, limited redox active sites, low surface area, scalability issues practical designs. To address these issues, conventional strategies including heterojunction engineering, plasmonics, hybridization, lattice defects, sensitization, upconversion processes extensively employed. More recently, innovative hybrid like photonic crystal-assisted polarization field-assisted emerged, which improve absorption separation by harnessing slow photon effect, multiple scattering, piezoelectric, pyroelectric, ferroelectric properties of materials. This review article aims provide a comprehensive examination summary new synergistic approaches, integrating plasmonic effects, processes, crystal photocatalysis. It also explores role temperature suppressing exciton recombination during photothermic highlights emerging effects magnetic fields, periodic illumination, many-body large-hole polaron, anapole excitations, hold significant potential advance technology facilitate renewable generation.

Язык: Английский

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Plasmon-enhanced fluorescence for biophotonics and bio-analytical applications

Frontiers in Chemistry, Год журнала: 2024, Номер 12

Опубликована: Июнь 26, 2024

Fluorescence spectroscopy serves as an ultrasensitive sophisticated tool where background noises which serve a major impediment to the detection of desired signals can be safely avoided for detections down single-molecule levels. One such way bypassing noise is plasmon-enhanced fluorescence (PEF), interactions fluorophores at surface metals or plasmonic nanoparticles are probed. The underlying condition significant spectral overlap between localized plasmon resonance (LSPR) nanoparticle and absorption emission spectra fluorophore. rationale being coupling excited state fluorophore with leads augmented emission, owing local field enhancement. It manifested in enhanced quantum yields concurrent decrease lifetimes, increase radiative rate constants. This improvement provided by PEF allows scope expansion domain weakly emitting otherwise would have remained unperceivable. concept weak emitters plasmons bypass problems photobleaching, opening up avenues imaging significantly higher sensitivity improved resolution. Furthermore, amplification signal free electrons metal provides ample opportunities achieving lower limits that involved biological molecular sensing. avenue has attracted attraction last few years fast, label-free bio-analytes under physiological conditions using point-of-care analysis. review focusses on applications nanomaterials biosensing, brief introduction different aspects LSPR fabrication techniques.

Язык: Английский

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Insight into the unique role of silver single-atom in atomic-thickness ZnIn2S4/g-C3N4 Van der Waals heterojunction for photocatalytic hydrogen evolution

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 678, С. 742 - 753

Опубликована: Сен. 16, 2024

Язык: Английский

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Urine collection by sodium alginate/CMC composite self-calibrating aerogel SERS platform for accurate screening and staging of chronic kidney disease

International Journal of Biological Macromolecules, Год журнала: 2025, Номер 302, С. 140520 - 140520

Опубликована: Фев. 3, 2025

Язык: Английский

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Simplified Chemical Synthesis of Silver Nanocubes@ZnIn₂S₄ with Different Particle Sizes for Hydrogen Production under Visible Light

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

Опубликована: Фев. 5, 2025

Язык: Английский

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Engineering electron delocalization of ultrathin covalent organic framework nanosheets to elevate photocatalytic hydrogen evolution in seawater

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160481 - 160481

Опубликована: Фев. 1, 2025

Язык: Английский

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Molecular Ir-Based Coordination Compound Grafted onto Covalent Organic Framework for Efficient Photocatalytic H2 Evolution

Materials, Год журнала: 2025, Номер 18(8), С. 1874 - 1874

Опубликована: Апрель 19, 2025

The urgency of reducing pollution and developing clean energy storage requires efficient photocatalytic hydrogen evolution (PHE) tactics. To improve solar conversion efficiency, it is highly imperative to accelerate the photocarriers separation transport through materials design. A stable photocatalyst based on TpPa-COFs (triformylphloroglucinol phenylenediamine covalent organic frameworks) was developed by a molecular-level design strategy. study successfully introduced molecular-scale Ir active site onto surface via coordination bonds. It verified structural integrity existence basic characterizations, such as Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron (XPS), transmission electron microscopy (TEM). After Ir-based compound joining, absorption edge TpPa-COF-M1 TpPa-COF-M2 extended 750 nm. TpPa-COF + M1 exhibited highest H2 rate 662 µmol/h (10 mg catalyst) under visible-light (λ ≥ 420 nm) irradiation. apparent quantum yield (AQY) calculated be 1.9%, 3.8%, 4.8%, 2.8%, 1.8%, 0.3% at monochromatic wavelengths 420, 450, 470, 500, 550, 600 nm, respectively. Our findings confirm that photocatalysts can effectively boost performance reduce cost in reactions provide an important strategy for designing photocatalysts.

Язык: Английский

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