Utilization of Stable and Efficient High‐Entropy (Ni_0.2Zn_0.2Mg_0.2Cu_0.2Co_0.2)Al₂O₄ Catalyst with Polyvalent Transition Metals to Boost Peroxymonosulfate Activation toward Pollutant Degradation

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 23, 2025

Abstract A polyacrylamide gel method has been used to synthesize a variety of polyvalent‐transition‐metal‐doped Ni position high entropy spinel oxides (Ni 0.2 Zn Mg Cu Co )Al 2 O 4 ‐800 °C (A ) on the basis NiAl , and catalytic activity is studied under synergistic action peroxymonosulfate (PMS) activation simulated sunlight. The containing polyvalent transition metals 2+ can effectively activate PMS efficiently degrade levofloxacin (LEV) tetracycline hydrochloride (TCH) sunlight irradiation. After 90 min light exposure, degradation percentages LEV (50 mg L −1 TCH (100 by /PMS/vis system reach 87.0% 90.2%, respectively. superoxide radicals, photoinduced holes, singlet dominate process, while hydroxyl radicals sulfate play only small role. adsorption energy charge density difference between different systems are calculated functional theory, efficiency combining with change length O─O bond after adsorption. mechanism proposed, which provides new idea for study in field catalysis.

Language: Английский

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PdMoPtCoNi High Entropy Nanoalloy with d Electron Self‐Complementation‐Induced Multisite Synergistic Effect for Efficient Nanozyme Catalysis

Advanced Science, Journal Year: 2024, Volume and Issue: 11(38)

Published: Aug. 9, 2024

Engineering multimetallic nanocatalysts with the entropy-mediated strategy to reduce reaction activation energy is regarded as an innovative and effective approach facilitate efficient heterogeneous catalysis. Accordingly, conformational entropy-driven high-entropy alloys (HEAs) are emerging a promising candidate settle catalytic efficiency limitations of nanozymes, attributed their versatile active site compositions synergistic effects. As proof nanozymes (HEzymes) concept, elaborate PdMoPtCoNi HEA nanowires (NWs) abundant sites tuned electronic structures, exhibiting peroxidase-mimicking activity comparable that natural horseradish peroxidase reported. Density functional theory calculations demonstrate enhanced electron abundance NWs near Fermi level (E

Language: Английский

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Unlocking the photothermal conversion capacity of lignin and lignin-derived materials

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 497, P. 154985 - 154985

Published: Aug. 23, 2024

Language: Английский

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A switchable dual-mode film with designed intercalated and hierarchical structures for highly efficient passive radiation cooling and solar heating

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 494, P. 152920 - 152920

Published: June 7, 2024

Language: Английский

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Ultrahigh Thermal Robustness of High‐Entropy Spectrally Selective Absorbers for Next‐Generation Concentrated Solar Power System

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 9, 2024

Abstract Spectrally selective absorbers (SSAs) are a critical component in concentrated solar power (CSP) systems, as they maximize sunlight absorption while suppressing heat radiative loss. Despite various SSAs being demonstrated, the challenges remain on limitations of thermal instability at elevated operating temperatures especially above 650 °C due to oxidation and diffusion layer. To address these challenges, herein high‐entropy strategy is resorted. By utilizing nitride film an layer, double‐layer SSA prepared by facile magnetron sputtering method. High‐entropy engineering intensifies complicates localized electronic bands, concurrently exhibiting relatively flat bands around Fermi level, which can significantly enhance 3d interband transition. The resultant delivers desired spectral selectivity ( α /ɛ 82 = 92.7%/8.4%). Benefitting from effect, maintains outstanding optical properties 93.3%/9.4%) even after 750 vacuum treatment for 120 h. Under 1 kW m −2 simulated illumination, surface temperature absorber easily rise 95.3 °C, suggesting its remarkable solar‐thermal performance. Furthermore, effectiveness parabolic trough collectors (PTCs) validated. All competitive performances make potentially promising candidate PTCs.

Language: Английский

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Boosting Self-powered Wearable Thermoelectric Generator with Solar Absorber and Radiative Cooler

Nano Energy, Journal Year: 2024, Volume and Issue: unknown, P. 110381 - 110381

Published: Oct. 1, 2024

Language: Английский

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Advancements on High-Entropy Materials for Electromagnetic Wave Absorption

Materials Horizons, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

This review includes synthetic methods, characterization techniques, electronic structure-regulating strategies, and electromagnetic wave absorption applications of high-entropy materials.

Language: Английский

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Solar evaporator coupled with strong/weak convection and its cascade utilization

Science Bulletin, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

Language: Английский

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High‐Entropy Materials: from Bulk to Sub‐nano

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 12, 2025

Abstract High‐entropy materials (HEMs), characterized by their unique compositions involving multiple principal elements and inherent configurational disorder, have emerged as a focal point of material science research since introduction, owing to exceptional structural stability superior performance. The distinctive features HEMs, including the high‐entropy effect, lattice distortion, sluggish diffusion, cocktail enabled wide‐ranging applications in fields such energy storage, catalysis, electronic devices, beyond. This review systematically documents evolution HEMs synthesis, from traditional melting‐based methods for bulk production recent breakthroughs addressing limitations elemental immiscibility, ultimately enabling precise multi‐path synthesis nano‐ sub‐nano materials. It comprehensively examines controllable strategies across various dimensional scales, principles composition‐structure design, regulation multidimensional morphologies, multifunctional properties materials' multi‐component characteristics. Furthermore, this work prospectively explores emerging that could drive future development with particular emphasis on potential synergies between high‐throughput experimentation, data‐driven approaches, chiral factors, entropy‐driven strategies, advanced high‐resolution characterization techniques.

Language: Английский

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Orbital Matching Mechanism‐Guided Synthesis of Cu‐Based Single Atom Alloys for Acidic CO₂ Electroreduction

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 19, 2025

Abstract Recent advancements in alloy catalysis have yield novel materials with tailored functionalities. Among these, Cu‐based single‐atom (SAA) catalysts attracted significant attention catalytic applications for their unique electronic structure and geometric ensemble effects. However, selecting alloying atoms robust dispersion stability on the Cu substrate is challenging, has mostly been practiced empirically. The fundamental bottleneck that microscopic mechanism governs unclear, a comprehensive approach designing SAA systems simultaneous high activity still missing. Here, combining theory experiment, simple yet intuitive d ‐ p orbital matching discovered rapid assessment of atomic SAAs, exhibiting its universality extensibility screening effective SAAs across binary, ternary multivariant systems. selectivity newly designed demonstrated prototype reaction‐acidic CO 2 electroreduction, where all achieve single‐carbon product exceeding 70%, Sb 1 reaching peak faradaic efficiency 99.73 ± 2.5% at 200 mA cm −2 . This work establishes design principles excellent selectivity, will boost development ultrahigh‐performance advanced such as electrocatalysis.

Language: Английский

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