Tunable NiSe‐Ni₃Se₂ Heterojunction for Energy‐Efficient Hydrogen Production by Coupling Urea Degradation

Small Methods, Год журнала: 2025, Номер unknown

Опубликована: Янв. 7, 2025

Abstract Urea‐assisted water splitting is a promising energy‐saving hydrogen (H 2 ) production technology. However, its practical application hindered by the lack of high‐performance bifunctional catalysts for urea oxidation reaction (UOR) and evolution (HER). Herein, heterostructured catalyst comprising highly active NiSe Ni 3 Se , along with conductive graphene‐coated nickel foam skeleton (NiSe‐Ni /GNF) reported. The NiSe‐Ni originates from in situ selenization foam, allowing careful regulation to ratio simply adjusting calcination temperature. Theoretical calculations charge transfer between components can optimize pathways reduce corresponding energy barriers. Accordingly, designed exhibits excellent UOR HER activity stability. Furthermore, /GNF‐based UOR‐HER electrolyzer requires only 1.54 V achieve current density 50 mA cm −2 which lower than many recent reports much 1.83 OER‐HER electrolyzers. Moreover, exhibited negligible cell voltage variation during 28‐h stability test, indicating satisfactory stability, provides new viable paradigm H production.

Язык: Английский

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P-doped and cyano-modified carbon nitride nanotubes for photocatalytic hydrogen evolution coupled with bisphenol A degradation

Journal of Colloid and Interface Science, Год журнала: 2025, Номер 686, С. 525 - 534

Опубликована: Фев. 1, 2025

Язык: Английский

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Advancements in Amorphous Oxides for Electrocatalytic Carbon Dioxide Reduction

Materials Today Catalysis, Год журнала: 2024, Номер unknown, С. 100065 - 100065

Опубликована: Сен. 1, 2024

Язык: Английский

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RuxMoS2 interfacial heterojunctions achieve efficient overall water splitting and stability in both alkaline and acidic media under large current density exceeding 100 mA cm-2

Molecular Catalysis, Год журнала: 2024, Номер 570, С. 114710 - 114710

Опубликована: Ноя. 22, 2024

Язык: Английский

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Phase-Dependent Electronic Structure Modulation of Nickel Selenides by Fe Doping for Enhanced Bifunctional Oxygen Electrocatalysis

Nanoscale, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Different phases of nickel selenides are synthesized from a single coordination polymer precursor by tuning the electronic structure for bifunctional electrocatalytic OER and ORR in alkaline media.

Язык: Английский

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Hybrid nanostructure carbon dots/zinc oxide from Rosa Indica for photodegradation of various pharmaceuticals pollutants

Journal of Water Process Engineering, Год журнала: 2025, Номер 70, С. 106828 - 106828

Опубликована: Янв. 5, 2025

Язык: Английский

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Unleashing the Potential of Metastable Materials in Electrocatalytic Water Splitting

ACS Materials Letters, Год журнала: 2025, Номер unknown, С. 524 - 543

Опубликована: Янв. 6, 2025

Electrocatalytic water splitting is pivotal for advancing the hydrogen economy, yet conventional stable-phase catalysts are constrained by rigid crystal structures and electronic states, leading to fixed active sites, limited adaptability, sluggish kinetics. Metastable materials emerge as promising alternatives due their structural flexibility tunable properties; however, dynamic regulatory mechanisms remain underexplored. This review uniquely offers a comprehensive analysis of metastable catalysts, emphasizing how factors such size, phase structure, properties, defects, interfaces significantly enhance catalytic performance. By dissecting range (metals, alloys, oxides, sulfides, nitrides, hydroxides), we elucidate precise modulation strategies that improve efficiency stability. Practical applications highlight superior adaptability activity compared traditional catalysts. Addressing key challenges technical bottlenecks, this provides innovative insights strategic directions optimizing materials, thereby efficient sustainable energy conversion technologies.

Язык: Английский

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Carbon Dots in Catalysis: Synthesis, Properties, Applications, Comparative Advantages, and Future Directions

Journal of environmental chemical engineering, Год журнала: 2025, Номер unknown, С. 115556 - 115556

Опубликована: Янв. 1, 2025

Язык: Английский

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Chitin-rich shrimp shells-based nitrogen-doped green fluorescence carbon dots: New insights for multi-orbital applications

International Journal of Biological Macromolecules, Год журнала: 2025, Номер unknown, С. 141029 - 141029

Опубликована: Фев. 1, 2025

Язык: Английский

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Enhancing drought tolerance in blackgram (Vigna mungo L. Hepper) through physiological and biochemical modulation by peanut shell carbon dots

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Фев. 14, 2025

Among the abiotic factors that causes threat to crop production, drought is one of foremost constraints in changing climatic era. Hence, a study was conducted mitigate effect stress blackgram with peanut shell carbon dots (PNS-CDs) as seed priming and foliar spray agent. Blackgram seeds were primed PNS-CDs at 200 ppm for 3 h plants sprayed 50 on 30th 45th DAS under conditions (30%, 50% 75% WHC). The imposed treatments included dry (control), water plants, PNS-CDs, combination both. results demarcate exemplary performance when given combined application (200 ppm) (50 terms its growth yield. Further, an increased activity catalase (12%), peroxidase superoxide dismutase (22%), glutathione reductase (60%), ascorbate (55%), H2O2 scavenging (32%) proline (35%) noticed over seeds, which confirmed antioxidant defense mechanism offered by PNS-CDs. In addition, percentage increase photosynthetic parameters like total chlorophyll (44%), soluble protein (54%), rate (89%), stomatal conductance (40%), internal CO2 concentration (74%) stability index (51%) role photosynthesis enhancer stress, resulted enhanced tolerance, plant Thus, it found followed 30 could serve sustainable alternative chemical inputs, ensuring better productivity tolerance water-limited environments. future research explore molecular mechanisms underlying different crops, biotic will also pave way broader agricultural sustainability eco-friendly approach.

Язык: Английский

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