Heterostructured electrocatalysts for the oxygen evolution reaction

Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(30), С. 18832 - 18865

Опубликована: Янв. 1, 2024

This review focuses mainly on the overall facilitating effect of heterostructures OER process. The fabrication heterostructured electrocatalysts and relationship between their structures electrocatalytic properties are discussed.

Язык: Английский

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Fe-doped Carbon Dots with Enhanced Fluorescence: Facilitating Cu2+ Detection and Urea Electro-Oxidation

Talanta, Год журнала: 2025, Номер 292, С. 127942 - 127942

Опубликована: Март 13, 2025

Язык: Английский

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Nanoflower Mn_xNi_2−xP as efficient bifunctional catalyst for hydrogen production with urea‐assisted energy‐saving in alkaline freshwater and seawater

EcoEnergy, Год журнала: 2025, Номер unknown

Опубликована: Янв. 5, 2025

Abstract To achieve efficient and stable hydrogen production while addressing the corrosive effects of seawater on electrodes, integrating energy‐saving urea oxidation reaction (UOR) with evolution (HER) presents a promising low‐energy solution. However, developing low‐cost, high‐performance bifunctional electrocatalysts for both HER UOR remains significant challenge. In this work, we prepared featuring Mn x Ni 2− P nanoflower structures grown nickel foam using simple hydrothermal phosphatization method. These catalysts demonstrated excellent performance in alkaline freshwater seawater, notably low overpotentials 251 257 mV HER, 1.33 1.37 V UOR. Combining its activity two‐electrode system, an energy saving 0.19 potential compared to water electrolysis through can be acquired reach 100 mA cm −2 current density. Moreover, catalyst also maintains fairly after long‐term testing, indicating production. Our study reveals that synergistic interaction between metals enhances electronic structure electrocatalysts, significantly boosting activities. Additionally, doping alters morphological structure, creating nanoflowers abundant active sites, nickel‐iron phosphides improve catalyst's corrosion resistance seawater. This work provides valuable insights into design non‐precious metal splitting, combining urea‐assisted energy‐saving.

Язык: Английский

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Transition metal-based selenide materials derived from ZIF-67 as efficient urea and seawater splitting electrocatalyst

Renewable Energy, Год журнала: 2025, Номер unknown, С. 122663 - 122663

Опубликована: Фев. 1, 2025

Язык: Английский

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Recent Progress in the Design and Application of Strong Metal–Support Interactions in Electrocatalysis

Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Март 4, 2025

The strong metal-support interaction (SMSI) in supported metal catalysts represents a crucial factor the design of highly efficient heterogeneous catalysts. This can modify surface adsorption state, electronic structure, and coordination environment metal, altering interface structure catalyst. These changes serve to enhance catalyst's activity, stability, reaction selectivity. In recent years, multitude researchers have uncovered range novel SMSI types induction methods including oxidized (O-SMSI), adsorbent-mediated (A-SMSI), wet chemically induced (Wc-SMSI). Consequently, systematic critical review is desirable illuminate latest advancements deliberate its application within article provides characteristics various most methods. It concluded that significantly contributes enhancing catalyst selectivity, increasing catalytic activity. Furthermore, this paper offers comprehensive extensive electrocatalysis hydrogen evolution (HER), oxygen (OER), reduction (ORR), carbon dioxide (CO2RR). Finally, opportunities challenges faces future are discussed.

Язык: Английский

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Highly Conductive Non-Calcined 2D Cu_0.3Co_0.7 Bimetallic–Organic Framework for Urea Electrolysis in Simulated Seawater

Inorganic Chemistry, Год журнала: 2024, Номер 64(1), С. 510 - 518

Опубликована: Дек. 20, 2024

Global clean energy demands can be effectively addressed using the promising approach of hydrogen generation combined with less consumption. Hydrogen generated, and urea-rich wastewater pollution mitigated in a low-energy manner urea oxidation reaction (UOR). This paper seeks to assemble unique electrocatalyst pristine 2D MOF, [Co(HBTC)(DMF)]n (Co-MUM-3), from 1,3,5-benzenetricarboxylate (BTC) oxidize simulated seawater. Ni foam (NF)-based working electrodes were fabricated by incorporating series heterometallic CuCo-MUM-3 frameworks (Cu0.1Co0.9-MUM-3, Cu0.2Co0.8-MUM-3, Cu0.3Co0.7-MUM-3, Cu0.4Co0.6-MUM-3), after which their application was examined. A very low required overpotential [1.26 V vs reversible electrode (RHE) 1 M KOH + 0.5 NaCl (simulated seawater) 0.33 urea] Tafel slope 112 mV dec–1 could observed for Cu0.3Co0.7-MUM-3 electrocatalyst, ensuring achievement electro-oxidation evolution reactions at corresponding 10 mA cm–2 electrocatalytic current density. relatively lower will evident compared other reported MOFs, outperforming commercial catalyst RuO2 (1.41 cm–2, 131 dec–1) considerable stability significantly high densities minimum 72 h.

Язык: Английский

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NiCoP as bifunctional catalyst for efficient electrolysis of urea-assisted hydrogen production at high current density

Journal of Power Sources, Год журнала: 2024, Номер 615, С. 235065 - 235065

Опубликована: Июль 19, 2024

Язык: Английский

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Ni-based electrocatalysts for urea oxidation reaction: mechanism, catalyst design strategies and future perspectives

Science China Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 18, 2024

Язык: Английский

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Active Nio Outperforms Other Ni-Based Catalysts for Urea Electrolysis

Опубликована: Янв. 1, 2025

Язык: Английский

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Sulfur-Doped CoFe/NF Catalysts for High-Efficiency Electrochemical Urea Oxidation and Hydrogen Production: Structure Optimization and Performance Enhancement

Catalysts, Год журнала: 2025, Номер 15(3), С. 285 - 285

Опубликована: Март 18, 2025

In this study, a sulfur-doped cobalt–iron catalyst (CoFeS/NF) was synthesized on nickel foam (NF) substrate via facile one-step electrodeposition method, and its performance in urea electrolysis for hydrogen production systematically investigated. Sulfur doping induced significant morphology optimization, forming highly dispersed nanosheet structure, which enhanced the specific surface area increase by 1.9 times compared with undoped sample, exposing abundant active sites. Meanwhile, introduction of sulfur facilitated electron redistribution at modulated valence states cobalt, promoted formation high-valence Ni3+/Co3+, optimized adsorption energy reaction intermediates, reduced charge transfer resistance. Electrochemical evaluations revealed that CoFeS/NF achieves current density 10 mA cm−2 remarkably low potential 1.18 V oxidation (UOR), outperforming both (1.24 V) commercial RuO2 (1.35 V). addition, also exhibited excellent catalytic activity long-term stability total decomposition process, attributed to amorphous structure synergistic enhancement corrosion resistance doping. This study provides new idea application strategy design multifunctional electrocatalysts, promotes coupled development wastewater treatment efficient technology.

Язык: Английский

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