Bridged Mn─O─Ru Motifs in RuO2 Catalyst Promoting Hydrogen Production at Ampere‐Level Current Density DOI
Qiqi Li,

Qiulin Xu,

Zhen Pei

et al.

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

Published: April 26, 2025

Abstract Accurately regulating the reactive sites of catalysts is vital for highly efficient catalytic processes but still faces considerable challenges. In view this, a local oxidation‐state asymmetric Mn‐O‐Ru bridged moiety developed by introducing Mn atoms into RuO 2 host. The synergistic effect respective active on microstructure ensures its excellent alkaline HER performance. Theoretical calculations profiled that induced moiety, water dissociation ability Ru significantly boosted, while bridging oxygen exhibits optimal hydrogen adsorption free energy. As predicted, Mn‐RuO catalyst achieved overpotentials as low 118 and 160 mV at industrial level current densities 1 A cm ‒2 in m KOH, respectively, superior to commercial Pt/C catalyst. Such electrocatalyst can operate stably with long lifetime 300 h 10 mA under conditions. Furthermore, it only requires 1.87 V reach density 1.0 when serving cathode an assembled flow cell. This work provides new insight environment design obtaining ideal electrocatalysts.

Language: Английский

Leaf‐Architecture and Function‐Mimicked Ensemble of Hierarchical Ag Nanowires/Ti3C2Tx MXene@Sulfur‐Vacancy Rich ZnIn2S4 Nanosheet Arrays for Enhanced Photoredox Catalysis DOI
Guanshun Xie,

Le Liao,

Zhaohui Huang

et al.

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

Published: April 21, 2025

Abstract In pursuing efficient photocatalytic systems, nature‐inspired photocatalysis has emerged as a promising strategy to optimize charge transfer and surface reactions. Inspired by the structure function of plant leaves, leaf‐like hierarchical heterostructure is constructed. ZnIn 2 S 4 nanosheet arrays are anchored on integrated Ag nanowires network with Ti 3 C T x MXene support, during which process sulfur vacancies (V ) formed due anti‐strong metal‐support interaction. The supported serve mesophyll absorb photons convert solar‐to‐chemicals, embedded in interface veins shuttle carriers for redox reactions, V resemble stomata facilitate adsorption reactants. Furthermore, able reduce thermodynamic barriers synergistic effect these functional components enables hydrogenation several nitroaromatic compounds, exhibits H evolution rate 1119.4 µmol g⁻¹ h⁻¹ under visible‐light irradiation, ≈7.9 times high that pure . This study highlights pivotal role design inspired nature advancing solar‐to‐chemical conversion paves way development next‐generation photocatalysts green chemistry energy applications.

Language: Английский

Citations

0

Growing Nanocrystalline Ru on Amorphous/Crystalline Heterostructure for Efficient and Durable Hydrogen Evolution Reaction DOI Open Access

Qikai Huang,

Xu Zhang, Tong Li

et al.

Catalysts, Journal Year: 2025, Volume and Issue: 15(5), P. 434 - 434

Published: April 29, 2025

The design of efficient hydrogen evolution reaction (HER) catalysts to minimize overpotentials plays a pivotal role in advancing water electrolysis and clean energy solutions. Ru-based catalysts, regarded as potential replacements for Pt-based face stability challenges during catalytic process. precise regulation metal–support interactions effectively prevents Ru nanoparticle degradation while optimizing interfacial electronic properties, enabling the simultaneous enhancement activity stability. Herein, we an amorphous/crystalline support employ situ replacement develop Ru-NiPx-Ni structure. crystalline Ni phase with ordered atomic arrangement ensures charge transport, amorphous unsaturated dangling bonds provides abundant anchoring sites nanoclusters. This synergistic structure significantly enhances HER performance, which attains 19 mV at 10 mA cm−2 70 100 1 m KOH, sustained operation exceeding 55 h cm−2. Electrochemical impedance spectroscopy analysis confirms that not only has high density active centers HER, but also reduces transfer resistance electrode–electrolyte interface, kinetics. study presents new directions designing high-efficiency catalysts.

Language: Английский

Citations

0

Plasma‐Constructed Co2P–Ni2P Heterointerface for Electro‑Upcycling of Polyethylene Terephthalate Plastic to Co‐Produce Hydrogen and Formate DOI
Jingsen Zhang, Xiuling Zhang, Chuan Shi

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 9, 2024

Abstract Integrating electrochemical upcycling of polyethylene‐terephthalate (PET) and the hydrogen evolution reaction (HER) is an energy‐saving approach for electrolytic (H 2 ) production, along with coproduction formate. Herein, a novel rapid strategy cold plasma phosphating employed to synthesize Co P–Ni P heterointerface decorated on carbon cloth (Co P‐Ni P/CC) catalyze H generation reform PET. Notably, obtained P/CC exhibits eminent ethylene glycol oxidation (EGOR) HER activities, effectuating low potentials merely 1.300 −0.112 V versus RHE at 100 mA cm −2 EGOR HER, respectively, also attaining ultralow cell bias 10 EG assisted‐water splitting. DFT characterization results validate that as‐formed built‐in electric fields in can accelerate electrons transfer deepen structural self‐reconstruction, thereby boosting effectively water dissociation (EG) dehydrogenation. Impressively, coupling PET‐derived EG‐to‐formate flow‐cell electrolyzer assembled pair achieves intriguing formate Faradaic efficiency 90.6% extraordinary stable operation over 70 h . The work exemplifies facile effective synthesizing metal phosphides electrocatalysts performance toward splitting recycling

Language: Английский

Citations

3

Dual-Functional Heterogeneous Rh–Sb Alloy Nanomaterials Coupling Electrochemical Hydrazine Oxidation and Hydrogen Evolution DOI
Wenjing Tian, Hui‐Zi Huang, Di Liu

et al.

ACS Applied Nano Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 15, 2025

Language: Английский

Citations

0

Bridged Mn─O─Ru Motifs in RuO2 Catalyst Promoting Hydrogen Production at Ampere‐Level Current Density DOI
Qiqi Li,

Qiulin Xu,

Zhen Pei

et al.

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

Published: April 26, 2025

Abstract Accurately regulating the reactive sites of catalysts is vital for highly efficient catalytic processes but still faces considerable challenges. In view this, a local oxidation‐state asymmetric Mn‐O‐Ru bridged moiety developed by introducing Mn atoms into RuO 2 host. The synergistic effect respective active on microstructure ensures its excellent alkaline HER performance. Theoretical calculations profiled that induced moiety, water dissociation ability Ru significantly boosted, while bridging oxygen exhibits optimal hydrogen adsorption free energy. As predicted, Mn‐RuO catalyst achieved overpotentials as low 118 and 160 mV at industrial level current densities 1 A cm ‒2 in m KOH, respectively, superior to commercial Pt/C catalyst. Such electrocatalyst can operate stably with long lifetime 300 h 10 mA under conditions. Furthermore, it only requires 1.87 V reach density 1.0 when serving cathode an assembled flow cell. This work provides new insight environment design obtaining ideal electrocatalysts.

Language: Английский

Citations

0