Deciphering the Electronic Coupling Dynamics of Laser‐induced Ru/Cu Electrocatalyst for Dual‐Side Hydrogen Production and Formic Acid Co‐synthesis via DFT Analysis DOI
Sagyntay Sarsenov, Raja Arumugam Senthil, Ahreum Min

et al.

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

Published: Oct. 18, 2024

Abstract Herein, a straightforward approach using pulsed laser technology to synthesize selective hexagonal‐close‐packed ( hcp ) Ru nanoparticles attached Cu nanospheres (Ru/Cu) as bifunctional electrocatalyst for catalyzing the hydrogen evolution reaction (HER) and formaldehyde oxidation (FOR) are reported. Initially, Ru‐doped CuO flakes synthesized coprecipitation method followed by transformation into Ru/Cu composites through strategy involving irradiation in liquid. Specifically, optimized Ru/Cu‐4 composite not only demonstrates low overpotential of 182 mV at 10 mA·cm −2 HER but also an ultralow working potential 0.078 V (versus reversible electrode) FOR same current density. Remarkably, FOR∥HER‐coupled electrolyzer employing Ru/Cu‐4∥Ru/Cu‐4 system achieves H 2 production both electrodes with cell voltage 0.42 while co‐synthesizing formic acid. Furthermore, density functional theory analyses elucidate that superior activity originates from adsorption energies reactive species on catalyst surfaces during FOR, facilitated synergistic coupling between Cu. This study presents alternative synthesizing highly effective electrocatalytic materials use energy‐efficient cosynthesis value‐added chemicals suitable practical applications.

Language: Английский

Multiphasic interfaces boost hydrogen evolution reaction of bifunctional NiFe LDH electrocatalyst via sulfur-phosphorus co-thermal treatment for efficient overall water-splitting DOI
Guangyao Yang,

Weiliang Peng,

Jianwei Ye

et al.

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 179074 - 179074

Published: Feb. 1, 2025

Language: Английский

Citations

0
In Situ Controllably Self-Assembled CoFe Oxide Nanosheet Arrays As Efficient Catalytic Electrodes for Oxygen Evolution Reaction at Large Current Density DOI

Ruige Qin,

Guang Yang, Lijun Zhao

et al.

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

Published: March 27, 2025

To advance the hydrogen energy economy, developing efficient water-splitting catalysts is crucial. As a potential candidate for industrial applications, catalytic performance of CoFe2O4 at large current density needs to be optimized in combination with variety strategies. Here, brand-new In-doped cobalt ferrite/nickel selenide (CoFe1.7In0.3O4/NiSe2) heterojunction genuine as highly effective electrocatalyst OER was reported. Density functional theory calculations demonstrate that enhancement ascribed heterogeneous atom doping and self-supported electrode consisting heterostructures, which reduce band center Fe d orbit narrow gap ferrite. The CoFe1.7In0.3O4/NiSe2 catalyst demonstrates remarkably low overpotentials 335 mV achieve densities 500 mA cm–2 (η500) oxygen evolution reaction, while maintaining complete stability over 100-h chronocurrent measurement cm–2. In addition, also excellent reaction superior durability. This strategy can extended other spinel oxides stable density.

Language: Английский

Citations

0
Modulating the adsorption/redox sites and charge separation of NiS co-catalyst assisted NiFe-LDH/FeS heterostructure for photocatalytic CO2 reduction DOI
Jie Xu, Lei Zhou,

Le Xu

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162416 - 162416

Published: April 1, 2025

Language: Английский

Citations

0
Redox-active ligands for oxygen evolution reactions activity: modulation of metal valence states in synthesis and accelerated reconstruction by rapid hydrolysis in alkaline electrolytes DOI

Pengxin Sun,

Jing Liu, Wang Li

et al.

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 116622 - 116622

Published: April 1, 2025

Language: Английский

Citations

0
Pulsed laser-tuned ruthenium@carbon interface for self-powered hydrogen production via zinc–hydrazine battery coupled hybrid electrolysis DOI Creative Commons
Hyo‐Jun Ahn, Raja Arumugam Senthil,

Sieon Jung

et al.

eScience, Journal Year: 2025, Volume and Issue: unknown, P. 100408 - 100408

Published: April 1, 2025

Language: Английский

Citations

0
Boosting Reaction Kinetics and Stability of Electrocatalytic Oxygen Evolution with Ir/CoV‐LDH/Graphene Heterogeneous Electrocatalyst DOI
Xianjun Zhu,

Le Fang,

Zichao Zhou

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: May 8, 2025

Abstract To address the challenge of low catalytic performance in electrocatalytic oxygen evolution reaction (OER) caused by slow kinetics, a novel approach is developed utilizing crystalline properties iridium (Ir) and hydrogen‐related layered double hydroxide (LDH) to enhance corrosion resistance. These materials are integrated into CoV‐LDH structure design an Ir/CoV‐LDH/G heterogeneous electrocatalyst. This innovative not only enhances kinetics but also optimizes electronic catalyst through interactions at interface, leading excellent OER performance. Notably, requires overpotentials merely 203 289 mV achieve current densities 10 100 mA cm −2 , respectively. Furthermore, when utilized Ir/CoV‐LDH/G||Pt/C electrolytic cell for overall water splitting, it delivers density mA·cm voltage 1.46 V, surpassing most commercial IrO₂||Pt/C previously reported Ir‐based LDH electrocatalysts. The exhibits remarkable stability, maintaining h without significant degradation.

Language: Английский

Citations

0
Nitrogen-Rich Triazine-Based Covalent Organic Frameworks as Efficient Visible Light Photocatalysts for Hydrogen Peroxide Production DOI Creative Commons
Shu Yang, Keke Zhi,

Zhimin Zhang

et al.

Nanomaterials, Journal Year: 2024, Volume and Issue: 14(7), P. 643 - 643

Published: April 8, 2024

Covalent organic frameworks (COFs) have been widely used in photocatalytic hydrogen peroxide (H2O2) production due to their favorable band structure and excellent light absorption. Due the rapid recombination rate of charge carriers, however, applications are mainly restricted. This study presents design development two highly conjugated triazine-based COFs (TBP-COF TTP-COF) evaluates H2O2 performance. The nitrogen-rich structures high degrees conjugation TBP-COF TTP-COF facilitate improved absorption, promote O2 adsorption, enhance redox power, enable efficient separation transfer photogenerated carriers. There is thus an increase activity for H2O2. When exposed 10 W LED visible irradiation at a wavelength 420 nm, pyridine-based produced 4244 μmol h−1 g−1 from pure water absence sacrificial agent. Compared (1882 g−1), which has similar but lacks pyridine sites, demonstrated nearly 2.5 times greater efficiency. Furthermore, it exhibited superior performance compared most previously published nonmetal COF-based photocatalysts.

Language: Английский

Citations

3
Unveiling the role of bismuth doping in NiFe layered double hydroxide catalysts: Synergistic electronic modulation for superior oxygen evolution activity DOI
Shanshan Lu,

Ang Wang,

Aiyun Jiang

et al.

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 123, P. 23 - 31

Published: April 1, 2025

Language: Английский

Citations

0
Steering the electronic transfer between Ir nanoparticles and Ni(OH)2/FeOOH for overall water splitting in both alkaline and neutral media DOI

Manyuan Gan,

Yanhui Song,

Jinjia Wei

et al.

Applied Surface Science, Journal Year: 2025, Volume and Issue: unknown, P. 163249 - 163249

Published: April 1, 2025

Language: Английский

Citations

0
Laser‐Regulated CoFeRu‐LDH Nanostructures: Nitrite‐to‐Ammonia Production in Zn–Nitrite Battery and Oxygen Evolution in Water Electrolysis DOI

Sieon Jung,

Raja Arumugam Senthil, Cheol Joo Moon

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: May 2, 2025

Abstract Herein, the design and synthesis of Ru‐doped CoFe‐layered double hydroxide (CoFeRu─LDH) nanostructures is presented via an innovative yet straightforward pulsed laser method. The CoFeRu─LDH catalyst demonstrates outstanding electrocatalytic performance, achieving a high NH 4 + Faradaic efficiency (FE) 89.65% at −0.7 V versus reversible hydrogen electrode for nitrite reduction reaction (NO 2 − RR) low overpotential 297 mV 10 mA cm −2 oxygen evolution (OER). Comprehensive in situ ex analyses reveal electrochemically energetic species formed on surface during NO RR OER. Theoretical studies confirm that Ru doping plays imperative role tuning electronic structure CoFeRu─LDH, lowering its barriers, thereby remarkably enhancing OER performance. Specifically, galvanic Zn–nitrite battery using as cathode efficiently converts to with FE 96.8% while concurrently generating electricity power density 4.14 . Furthermore, pairing anode Pt/C water electrolysis enables H production cell voltage 1.57 This study presents new pathway designing versatile, high‐performance electrocatalysts sustainable energy conversion carbon‐free 3 fuels.

Language: Английский

Citations

0