Dual doping: An emerging strategy to construct efficient metal catalysts for water electrolysis

EcoEnergy, Journal Year: 2024, Volume and Issue: 2(1), P. 114 - 140

Published: March 1, 2024

Abstract Developing efficient electrocatalysts for water electrolysis is critical sustainable hydrogen energy development. For enhancing the catalytic performance of metal catalysts, dual doping has attracted enormous interest its high effectiveness and facile realization. Dual effective tuning electronic properties, electrical conductivity, populating active sites, improving stability catalysts. In this review, recent developments in cation–cation, cation–anion, anion–anion dual‐doped catalysts splitting are comprehensively summarized discussed. An emphasis put on illustrating how regulates external internal properties boosts Additionally, perspectives pointed out to guide future research engineering high‐performance heteroatom‐doped electrocatalysts.

Language: Английский

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In situ Mo doping in NiS₂: enhancing electron density and stimulating electronic conductivity of Cu₃P–GDY for efficient photocatalytic hydrogen evolution

Journal of Materials Chemistry A, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

The electronic conductivity of a catalyst can be enhanced by strategically doping with specific elements.

Language: Английский

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Synergy of Pd²⁺/S²⁻‐Doped TiO₂ Supported on 2‐Methylimidazolium‐Functionalized Polypyrrole/Graphene Oxide for Enhanced Nitrogen Electrooxidation

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(16)

Published: Jan. 17, 2024

Abstract The electrosynthesis of nitrate catalyzed by electrochemical nitrogen oxidation reaction (NOR) is considered as an alternative and sustainable approach to the conventional industrial manufacture, but optimizing electrocatalytic NOR performance fabricating efficient electrocatalysts at design level still encounter great challenges. Herein, unique Pd 2+ ‐ S 2− ‐doped TiO 2 (Pb/S–TiO ) nanoparticles are successfully in situ grown on surface 2‐methylimidazolium‐functionalized polypyrrole/graphene oxide (2‐MeIm/PPy/GO), which present typical hierarchical micro‐nanostructures, resulting excellent with highest NO 3 − yield 72.69 µg h −1 mg act. maximum Faraday efficiency 8.92% 2.04 V (vs reversible hydrogen electrode) due synergistic effect each component. Due doping effect, appropriate oxygen evolution (OER) activity achieved Ti‐site, where OER principally occurs, providing *O during non‐electrochemical step NOR, while process conversion inert N active *NO intermediates mainly occurs Pd‐site. Especially, sulfate radicals formed Pb/S–TiO @2‐MeIm/PPy/GO further promote adsorption decrease energy barrier, acceleration NOR. It provides theoretical practical experience for preparation electrocatalysts.

Language: Английский

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Co Nanoparticles on MnO: Electron Transfer through Ohmic and S-Scheme Heterojunction for Photocatalytic Hydrogen Evolution

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

Published: Feb. 4, 2025

The photocatalytic hydrolysis method represents a significant potential solution to the dual challenges of energy security and environmental sustainability. selection suitable materials systems is paramount importance for successful implementation hydrogen production technology. In this study, in situ reduction Co nanoparticles on MnO was successfully performed by calcining MnCo-PBA. Furthermore, graphdiyne (GDY) introduced physical agitation. introduction GDY reduced Co/MnO agglomeration made Co/MnO/GDY catalyst exhibit high activity production, with an optimum rate 2117.33 μmol·g-1·h-1, which 4.88 2.67 times higher than that Co/MnO, respectively. results photoelectrochemical test indicate composite has better photogenerated carrier separation efficiency. X-ray photoelectron spectroscopy, density functional theory calculations, electron paramagnetic resonance were used investigate transfer mechanism during process, confirming presence S-scheme heterojunction ohmic junction, enhance carriers. GDY-based constructed study significantly bimetallic catalysts.

Language: Английский

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Enhancing the directed migration of photogenerated carriers through CuNi2S4/CdS ohmic heterojunction for efficient photocatalytic hydrogen production

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 132473 - 132473

Published: March 1, 2025

Language: Английский

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N-doped hollow nanofibers loaded with RuCoNi ternary alloy as an efficient catalyst for hydrogen evolution reaction

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 1003, P. 175352 - 175352

Published: June 25, 2024

Language: Английский

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Recent Advances for Seawater Hydrogen Evolution

ChemCatChem, Journal Year: 2024, Volume and Issue: 16(14)

Published: Jan. 23, 2024

Abstract Hydrogen production from electrolysis of seawater is considered one the most promising endeavors. However, complexity environment (corrosion‐prone, slow kinetics, and side reactions such as precipitation generation) leaves much room for progress in research on efficient stable catalysts. In recent years, order to improve technology hydrogen electrolytic seawater, scientists have focused preparation catalysts design electrolytes, which has resulted important progress. further understand current status development prospects evolution reaction (HER), this article summarizes general rules electrocatalysts electrolytes HER years. For structure modulation, effects catalyst modulation strategies heterostructures, elemental doping, manufacturing defects, morphology engineering others performance enhancement are highlighted. Overall guidelines summarized electrolyte directions future in‐depth exploration proposed with a view early realization an industrial scale.

Language: Английский

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Hydrogenated Pyridine‐Pyrrole Nitrogen‐Doped Carbon for High‐Efficiency Electrosynthesis of Hydrogen Peroxide in NaCl Electrolyte

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 26, 2024

Abstract Developing metal‐free carbon catalysts is critical to achieve the electrosynthesis of hydrogen peroxide (H 2 O ) via two‐electron oxygen reduction reaction (2e − ORR) using seawater as electrolyte. Herein, N‐rich doped (NC) synthesized by directly pyrolyzing guanine both N and C sources, which can facilitate formation ultrahigh‐N dopant (up 33.89 at.%), their ratios. The NC obtained at 700 °C with hydrogenated pyridine‐N pyrrole‐N (3:2) dopants exhibits a superior selectivity H 96%), high mass activity 545.5 A g −1 0.2 V versus RHE stable production 16.8 in 0.5 M NaCl. In situ Fourier transform infrared spectrum analysis proves that play role constructing active sites for synthesis . Meanwhile, theoretical calculations further reveal compared non‐hydrogenated dopants, pyridine pyrrole tune projected density states 2p z orbitals adjacent atoms approaching Fermi Level, enhancing * OOH through 2e ORR rather than 4e ORR. This work provides new insights developing efficient resources promising electrolytes.

Language: Английский

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S-scheme heterojunction of graphdiyne and bimetallic molybdate: Innovative exploration of photocatalytic hydrogen production performance

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 106, P. 471 - 480

Published: Feb. 4, 2025

Language: Английский

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Highly dispersed MoC quantum dots assist CeO2 for photocatalytic hydrogen production under visible light

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 106, P. 423 - 431

Published: Feb. 4, 2025

Language: Английский

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