Effective collective value-added recycling of nitrate and sulfion in wastewater via synergistic electrocatalysis of dual-active sites on copper-cobalt oxides

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 163044 - 163044

Опубликована: Апрель 1, 2025

Язык: Английский

---

Recent trends and prospects in electrochemical nitrate reduction to ammonia with an emphasis on cobalt catalysts

Coordination Chemistry Reviews, Год журнала: 2025, Номер 539, С. 216751 - 216751

Опубликована: Апрель 28, 2025

Язык: Английский

---

Synergistic engineering of doping and vacancy guiding transformation of active phase for efficient urea electrooxidation

Journal of Alloys and Compounds, Год журнала: 2025, Номер unknown, С. 180848 - 180848

Опубликована: Май 1, 2025

Язык: Английский

---

Construction of Atomic-Scale Compressive Strain for Oxime Electrosynthesis

Journal of the American Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Май 16, 2025

Tuning the surface strain is a powerful strategy to enhance catalytic activity of metal nanocatalysts, yet an atomically precise catalyst with intramolecular unlock atomic-level strain-structure-activity relationship still highly desired. Herein, we report synthesis, structural anatomy, and performance toward cyclohexanone oxime electrosynthesis Ag16Cu18(C≡C-C6H11)24 (Ag16Cu18) nanocluster, which has Cu6 ring in center. The Cu-Cu distance only 1.616 Å single crystal, shortest bond Cu nanomaterials date. Furthermore, once Ag16Cu18 was loaded onto carbon paper, ultrashort elongated ∼2.40 Å, showing strong compressive strain. exhibited excellent electrosynthesis, manifested by maximal Faradaic efficiency, yield, yield rate reaching 47.4%, 95.4%, 2.66 mmol·h-1·cm-2 at -0.35 V, respectively. In-situ attenuated total reflection surface-enhanced infrared spectroscopy revealed that sites adjacent Ag atoms primarily reduce NO stabilize it *NH2OH stage, while provide H* for reduction adsorb react *NH2OH, forming simultaneously. Density functional theory calculations confirmed presence ring, facilitates formation adsorption, hence significantly contributing generation. This study not reports case clusters but also provides understanding employing bimetallic nanocluster-based catalysts valuable organic molecules.

Язык: Английский

---

Constructing Asymmetric Defects Pairs in Electrocatalysts for Efficient Glycerol Oxidation

Journal of the American Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Май 16, 2025

Disrupting the charge distribution equilibrium in catalysts is an effective strategy for polarization and cleavage of small molecules during electrocatalytic process. To achieve C-C bond multicarbon molecules, such as glycerol, integrating advantages defect sites while creating spatially asymmetric that modulate local electronic perturbations both promising challenging. In this study, pairs were engineered by partially refilling sulfur atoms into spinel CuCo2Ox with a high oxygen vacancy density (HVo-S). These defect-refilled S (Vo-S) enhance transfer, reduce energy barrier glycerol adsorption, create thermodynamically favorable conditions second cleavage, whereas vacancies further amplifies perturbations. Exploiting spatial effects sites, HVo-S demonstrated superior performance compared to HVo without Vo refilling, achieving Faradaic efficiencies (FE) 98.5% 75.3% at 1.36 V vs RHE formic acid oxidation reaction (GOR), respectively. Significantly, also promotes electrooxidation ethylene glycol glucose, confirming its broad applicability activating bonds polyol substrates. This study elucidates role localized GOR process, providing new insights design novel electrocatalysts aimed promoting molecules.

Язык: Английский

---

Solar Ammonia Synthesis: Near-Complete Conversion of Intermediated Nitrogen Energy Carrier via the N₂–NO–NH₃ Route

ACS Nano, Год журнала: 2025, Номер unknown

Опубликована: Май 28, 2025

N2 fixation into NH3 under ambient conditions remains greatly challenging, where a relay scheme by plasma-enabled oxidation (pN2OR) and the NO reduction reaction (NORR) can be practical route. However, efficient conversion of NO, as intermediate nitrogen energy carrier, has not been accomplished due to limited mass transfer in solution. Here, tandem pN2OR photocatalytic NORR route (N2-NO-NH3) is developed achieve sustainable synthesis with near-complete conversion. The highly concentrated (∼1%), produced via pN2OR, introduced an absorption-photocatalysis scheme, efficiencies for synchronous dissolution photoreduction are significantly promoted. This system delivers near 100% ratio superior selectivity (98.33% ± 0.75%) stability (240 h) single-pass continuous flow. research successfully profitable production route, yielding substantial profit $3000 per ton NH4COOH final product.

Язык: Английский

---

Recent advances in carbon-based catalysts for electrocatalytic nitrate reduction to ammonia

Carbon letters, Год журнала: 2024, Номер 35(1), С. 1 - 19

Опубликована: Авг. 22, 2024

Язык: Английский

---

Polyethyleneimine modified Au core Rh shell nanodendrites for light-promoted nitrite reduction reaction at low concentration

Journal of Energy Chemistry, Год журнала: 2024, Номер 103, С. 400 - 407

Опубликована: Дек. 11, 2024

Язык: Английский

---

Preparation of Pocky-sticks like Ni4N@Cu heterostructure cathode via in-situ electrochemical reconstruction for electrocatalytic nitrate reduction

Separation and Purification Technology, Год журнала: 2024, Номер unknown, С. 131309 - 131309

Опубликована: Дек. 1, 2024

Язык: Английский

---

Synthesis of urea from CO₂ and N₂ fixation under mild conditions using polarized hydroxyapatite as a catalyst

Sustainable Energy & Fuels, Год журнала: 2024, Номер 8(7), С. 1473 - 1482

Опубликована: Янв. 1, 2024

A modified green ceramic converts N 2 and CO to urea using mild reaction conditions UV irradiation. The addition of a small amount NO the feed gas mixture allows illumination be removed enhances yield selectivity.

Язык: Английский

---