Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 180175 - 180175
Published: April 1, 2025
Language: Английский
Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)
Published: Jan. 2, 2025
Abstract High-entropy alloy nanoparticles (HEA-NPs) exhibit favorable properties in catalytic processes, as their multi-metallic sites ensure both high intrinsic activity and atomic efficiency. However, controlled synthesis of uniform ensembles at the level remains challenging. This study successfully loads HEA-NPs onto a nitrogen-doped carbon carrier (HEAs) pioneers application peroxymonosulfate (PMS) activation to drive Fenton-like oxidation. The HEAs-PMS system achieves ultrafast pollutant removal across wide pH range with strong resistance real-world water interferences. Furthermore, nonradical selectively transforms phenolics into high-molecular-weight products via polymerization pathway. unique non-mineralization regime remarkably reduces PMS consumption electron utilization efficiency up 213.4%. Further DFT calculations experimental analysis reveal that Fe Co act primary complex for activation, while Ni, Cu, Pd serve charge mediators facilitate transfer. resulting PMS* complexes on HEAs possess redox potential, which drives spatially separated phenol oxidation graphene support form phenoxyl radicals, subsequently triggering formation high-molecule polymeric reactions. offers engineered catalysts treatment low oxidant emissions.
Language: Английский
Citations
6
ACS Nano, Journal Year: 2024, Volume and Issue: 18(20), P. 12672 - 12706
Published: May 8, 2024
Since their introduction in 2004, high entropy alloys (HEAs) have attracted significant attention due to exceptional mechanical and functional properties. Advances our understanding of atomic-scale ordering phase formation HEAs facilitated the development fabrication techniques for synthesizing nanostructured HEAs. These materials hold immense potential applications various fields including automobile industries, aerospace engineering, microelectronics, clean energy, where they serve as either structural or materials. In this comprehensive Review, we conduct an in-depth analysis properties HEAs, with a particular emphasis on roles different nanostructures modulating these To begin, explore intrinsic extrinsic factors that influence stability Subsequently, delve into examination electrocatalytic exhibited by bulk three-dimensional (3D) well nanosized form zero-dimensional (0D) nanoparticles, one-dimensional (1D) nanowires, two-dimensional (2D) nanosheets. Finally, present outlook current research landscape, highlighting challenges opportunities associated nanostructure design structure-property relationships
Language: Английский
Citations
14
National Science Review, Journal Year: 2024, Volume and Issue: 11(4)
Published: Jan. 27, 2024
ABSTRACT The structural engineering of metastable nanomaterials with abundant defects has attracted much attention in energy-related fields. high-temperature shock (HTS) technique, as a rapidly developing and advanced synthesis strategy, offers significant potential for the rational design fabrication high-quality nanocatalysts an ultrafast, scalable, controllable eco-friendly way. In this review, we provide overview various micro- synthesized via HTS, including single metallic bimetallic nanostructures, high entropy alloys, metal compounds (e.g. oxides) carbon nanomaterials. Note that HTS provides new research dimension i.e. kinetic modulation. Furthermore, summarize application HTS—as supporting films transmission electron microscopy grids—in 2D materials, which is vital direct imaging materials. Finally, discuss future applications high-throughput liquid-phase strategies non-equilibrium micro/nano-manufacturing beyond It believed emerging field will bring opportunities to development nanoscience nanotechnology both fundamental practical aspects.
Language: Английский
Citations
13
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 498, P. 155736 - 155736
Published: Sept. 12, 2024
Language: Английский
Citations
9
Chinese Chemical Letters, Journal Year: 2025, Volume and Issue: unknown, P. 110852 - 110852
Published: Jan. 1, 2025
Language: Английский
Citations
1
Coatings, Journal Year: 2025, Volume and Issue: 15(1), P. 92 - 92
Published: Jan. 15, 2025
High-entropy alloys, since their development, have demonstrated great potential for applications in extreme temperatures. This article reviews recent progress mechanical performance, microstructural evolution, and deformation mechanisms at low high Under low-temperature conditions, the focus is on alloys with face-centered cubic, body-centered multi-phase structures. Special attention given to strength, toughness, strain-hardening capacity, plastic-toughening cold environments. The key roles of lattice distortion, nanoscale twin formation, deformation-induced martensitic transformation enhancing performance are highlighted. Dynamic behavior, characteristics various strain rates under conditions also summarized. Research transition metal-based refractory high-entropy reviewed high-temperature environments, emphasizing thermal stability, oxidation resistance, frictional properties. discussion reveals importance precipitation strengthening microstructure design improving strength elasticity. Advanced fabrication methods, including additive manufacturing high-pressure torsion, examined optimize microstructures improve service performance. Finally, this review suggests that future research should understanding toughening creep resistance. Further work cost-effective alloy design, dynamic behavior exploration, innovative methods will be essential. These efforts help meet engineering demands
Language: Английский
Citations
1
Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: 509, P. 161070 - 161070
Published: Feb. 26, 2025
Language: Английский
Citations
1
Materials Futures, Journal Year: 2024, Volume and Issue: 3(3), P. 035101 - 035101
Published: May 30, 2024
Abstract In the pursuit of sustainable energy solutions, efficiency hydrogen evolution reaction (HER) in alkaline conditions has been a significant challenge, primarily due to sluggish dissociation water molecules on platinum (Pt) catalysts. Addressing this critical issue, our study introduces an innovative Pt-Co@NCS catalyst. This catalyst synergistically combines Pt nanoparticles with Co single atoms nitrogen-doped carbon scaffold, overcoming traditional bottleneck slow dissociation. Its unique porous concave structure and nitrogen-enriched surface not only provide abundant anchoring sites for but also create conducive hydrophilic environment around particles. design leads drastic improvement process, as demonstrated by CO stripping deuterium labeling experiments. Achieving outstanding current density 162.8 mA cm −2 at −0.1 V versus RHE, Tafel slope 26.2 mV dec −1 , superior nominal mass activity 15.75 μ g represents step forward enhancing HER efficiency, indicating promising advancements field.
Language: Английский
Citations
7
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 4, 2024
Abstract Unraveling the mechanism driven by electronegativity‐dominated electronic configuration is crucial for developing high‐entropy alloys as efficient catalyst hydrogen evolution reaction (HER). In this work, different atoms with diverse electronegativities are explored to regulate electrocatalytic activity of PtFeCoNi@HCS toward HER, resulting in PtFeCoNiCuCr@HCS an overpotential 29 mV at 10 mA cm −2 and enhanced durability surpassing that commercial 20% Pt/C KOH environment. Based on various physicochemical electrochemical techniques well density functional theory calculations, a multi‐site synergistic effect within material elucidated terms both structural composition process. Briefly, Pt Cu serve fundamental elements form face‐centered cubic crystal framework, Cr primarily functions electron donor configuration, Co serves main active site water dissociation, produced species prefer transfer Pt, Fe, sites formation. This work offers in‐depth insight high entropy helpful designing electrocatalysts.
Language: Английский
Citations
7
Small, Journal Year: 2024, Volume and Issue: unknown
Published: June 3, 2024
Abstract The rational design of highly active and durable non‐noble electrocatalysts for hydrogen evolution reaction (HER) is significantly important but technically challenging. Herein, a phosphor cobalt dual doped copper–nickel alloy (P, Co–CuNi) electrocatalyst with high–efficient HER performance prepared by one‐step electrodeposition method reported the first time. As result, P, Co–CuNi only requires an ultralow overpotential 56 mV to drive current density 10 mA cm −2 , remarkable stability over 360 h, surpassing most previously transition metal‐based materials. It discovered that P doping can simultaneously increase electrical conductivity enhance corrosion resistance, while introduction Co precisely modulate sub‐nanosheets morphology expose more accessible sites. Moreover, XPS, UPS, DFT calculations reveal synergistic effect different dopants achieve optimal electronic structure around Cu Ni, causing down‐shifted d‐band center, which reduces desorption free energy rate‐determining step (H 2 O + e − H* → H OH ) consequently enhances intrinsic activity. This work provides new cognition toward development excellent activity spurs future study other NiCu‐based
Language: Английский
Citations
6