Localized assembly in biological activity: Origin of life and future of nanoarchitectonics

Advances in Colloid and Interface Science, Год журнала: 2025, Номер 339, С. 103420 - 103420

Опубликована: Фев. 3, 2025

Язык: Английский

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Nanoalloys Composed of Platinum Group Metals and p‐Block Elements for Innovative Catalysis

Advanced Energy and Sustainability Research, Год журнала: 2025, Номер unknown

Опубликована: Янв. 14, 2025

Alloy nanoparticles based on platinum group metals (PGMs) have been intensively investigated in various fields, especially catalysis. Recently, the scope of alloying has expanded to include not only d‐block transition but also p‐block elements, which a wide range properties that are very different from those metals. By PGMs with electronic structure and surface catalysts can be tuned, enhancing their catalytic performance. The focus this review is PGM–p‐block element nanoalloys, synthesis methods, characterization techniques, properties. In addition typical binary crystalline alloys, such as solid‐solution intermetallic highlights potential multielement, amorphous, or liquid recently garnered much attention. aims provide valuable perspectives for development PGM‐based sustainable innovative catalysis, while addressing current challenges future directions field.

Язык: Английский

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Oxygen Vacancy‐Electron Polarons Featured InSnRuO₂ Oxides: Orderly and Concerted In‐Ov‐Ru‐O‐Sn Substructures for Acidic Water Oxidation

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 3, 2024

Abstract Polymetallic oxides with extraordinary electrons/geometry structure ensembles, trimmed electron bands, and way‐out coordination environments, built by an isomorphic substitution strategy, may create unique contributing to concertedly catalyze water oxidation, which is of great significance for proton exchange membrane electrolysis (PEMWE). Herein, well‐defined rutile InSnRuO 2 density‐controllable oxygen vacancy (Ov)‐free polarons are firstly fabricated in situ substitution, using trivalent In species as Ov generators the adjacent metal ions donors form orderly concerted In‐Ov‐Ru‐O‐Sn substructures tetravalent oxides. For acidic obtained displays ultralow overpotential 183 mV (versus RHE) a mass activity (MA) 103.02 A mg Ru −1 , respectively. long‐term stability test PEMWE, it can run at low unchangeable cell potential (1.56 V) 200 h 50 mA cm −2 far exceeding current IrO ||Pt/C assembly 0.5 m H SO 4 . Accelerated degradation testing results PEMWE pure electrolyte show no significant increase voltage even when gradually increased from 1 5 The remarkably improved performance associated stabilized dense Ov‐electron polarons, synergistically activates band sites then boosting evolution kinetics. More importantly, self‐trapped polaron induces decrease entropy enthalpy, efficiently hinder atoms leaching increasing lattice atom diffusion energy barrier, achieves oxide. This work open door design next‐generation Ru‐based catalysts asymmetric active efficient electrocatalysis application.

Язык: Английский

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Dual active site-mediated Ir single-atom-doped RuO2 catalysts for highly efficient and stable water splitting

Chemical Science, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

Ru and Ir sites on single-atom-doped RuO 2 with the lowest rate-determining step reaction energy barriers towards HER OER, respectively.

Язык: Английский

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Laser Ultrafast Confined Alloying of Sub‐5 nm RuM (M = Cu, Rh, and Pd) Particles on Carbon Nanotubes for Hydrogen Evolution Reaction

Advanced Science, Год журнала: 2025, Номер unknown

Опубликована: Фев. 21, 2025

Thermodynamic immiscibility is a challenge for intermetallic alloying of sub-5 nm Ru-based alloys, which are excellent electrochemical catalysts water splitting. In this study, nanosecond laser ultrafast confined (LUCA) proposed to break the immiscible-to-miscible transition limit in synthesis carbon nanotubes (CNTs) supported bimetallic RuM (M = Cu, Rh, and Pd) alloy nanoparticles (NPs). The non-noble metal Cu with varying atomic ratios RuCu alloys appealing owing low price cost-effective large-scale practical applications. Benefiting from synergistic effect resultant H/OH binding energy alteration, Ru95Cu5/CNTs display electrocatalytic alkaline hydrogen evolution reaction (HER) activity an overpotential 17 mV Tafel slope 28.4 dec-1 at 10 mA cm-2, high robustness over long-term 5000 cyclic voltammetry cycles. performance much better than LUCA-synthesized CNTs-supported Ru86Rh14, Ru89Pd11, Ru, NPs catalysts, commercial benchmark 20% Pt/C, other mainstream including wet chemistry-synthesized RuRh particles (overpotential 25 mV, 47.5 mVdec-1) RuCu/CNTs 39 mV) synthesized using flash Joule heating method, indicating great potential LUCA screening new classes HER catalysts.

Язык: Английский

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Ruthenium-Mediated Synthesis of Ultrafine FePtCoNiRu High-Entropy Alloy Nanoparticles for Enhanced Hydrogen Evolution Catalysis

Journal of Alloys and Compounds, Год журнала: 2025, Номер unknown, С. 180933 - 180933

Опубликована: Май 1, 2025

Язык: Английский

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