Renewable Energy, Journal Year: 2025, Volume and Issue: unknown, P. 122663 - 122663
Published: Feb. 1, 2025
Language: Английский
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(18)
Published: Jan. 21, 2024
Abstract Urea oxidation reaction (UOR) has garnered significant attention in recent years as a promising and sustainable clean‐energy technology. Urea‐containing wastewater poses severe threats to the environment human health. Numerous studies hence focus on developing UOR viable process for simultaneously remediating converting it into energy. Moreover, UOR, which thermodynamic potential of 0.37 V (vs reversible hydrogen electrode, RHE), shows great promise replacing energy‐intensive oxygen evolution (OER; 1.23 vs RHE). The versatility stability urea, particularly at ambient temperatures, make an attractive alternative fuel cells. Since entails complex intermediate adsorption/desorption process, many are devoted designing cost‐effective efficient catalysts. Notably, transition metal‐based materials with regulated d orbitals have demonstrated process. However, comprehensive reviews focusing catalysts remain scarce. In light this, review aims bridge gap by offering in‐depth systematic overview cutting‐edge design strategies their diverse applications UOR. Additionally, delves status quo future directions, charting course further advancements this exciting field.
Language: Английский
Citations
77
Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(30), P. 18832 - 18865
Published: Jan. 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.
Language: Английский
Citations
24
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(38)
Published: May 6, 2024
Abstract Urea oxidation reaction (UOR) features a lower overpotential compared to the oxygen evolution (OER) during electrolysis, facilitating hydrogen (HER) at cathode. The distribution of charge plays pivotal role in promoting adsorption and cleavage chemical groups urea molecules, which can be modulated by introducing heterostructure. Herein, CoS 1.097 /Ni 3 S 2 heterojunction grown on nickel foam is designed, serving simultaneously for UOR HER. Based density functional theory (DFT) calculations, spontaneous transfer heterointerface induces formation localized electrophilic/nucleophilic regions, intelligently adsorbing electron‐donating/electron‐withdrawing activating bonds, thereby triggering decomposition. exhibits excellent catalytic activity urea, requiring only potential 1.22 V (with an 0.85 V) achieve current 100 mA cm −2 UOR, potentials 1.27 1.57 reach densities 10 , respectively, UOR//HER electrolysis cell, maintaining good stability high 60 h. Tests real urine have demonstrated performance similar that electrolyte. This work represents nearly best transition metal‐based materials applications, promising both efficient production
Language: Английский
Citations
21
ACS Materials Letters, Journal Year: 2024, Volume and Issue: 6(3), P. 1029 - 1041
Published: Feb. 20, 2024
Substituting the oxygen evolution reaction by urea oxidation (UOR) is thermodynamically more favorable for energy-saving hydrogen production. However, UOR suffers from sluggish kinetics due to its complex six-electron transfer processes combined with conversion of complicated intermediates. Herein, LaNiO3–NiO heterojunctions successfully constructed accelerate UOR. Systematic experimental investigation and theoretical calculation endorse that self-driven local charge redistribution takes place at Janus LaNiO3/NiO interface, generating nucleophilic electrophilic regions. Such a unique structure targeted adsorption amino groups carbonyl groups, thus promoting rupture C–N bonds in urea. In addition, build-in electric field triggered heterojunction could effectively diminish stepwise energy barrier, accelerating desorption *CO2. As result, exhibits superior performance, delivering current density 10 mA cm–2 1.34 V (vs RHE). This work supplies valuable insights fundamental understanding rational construction efficient catalyst.
Language: Английский
Citations
18
Chemical Communications, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 1, 2025
The urea oxidation reaction (UOR) presents a more favorable alternative to the conventional oxygen evolution (OER) for hydrogen production due its lower thermodynamic potential. This method offers advantages over traditional approaches operating conditions and potentially costs. However, complex 6-electron transfer process in UOR limits performance. Researchers are tackling this challenge by designing advanced electrocatalysts with optimized properties, such as porosity, heterostructures, controlled defects, surface functionalization, fine-tuned electronic structures. significant progress catalyst design holds promise future of clean energy technologies. In view this, layered double hydroxides (LDHs) attracting interest their potential role electrolysis synergistic cooperation metals, flexible configuration, tunable composition unique structure. review examines recent advancements synthesis LDH-based catalysts. Beyond highlighting breakthroughs catalysts, critically stresses strategies challenges towards conversion. Moreover, comprehensive approach provides valuable forward-looking perspective on research directions.
Language: Английский
Citations
2
Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(12), P. 6015 - 6025
Published: Jan. 1, 2023
The role of single atomic Ru site for enhanced UOR performance.
Language: Английский
Citations
41
International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 57, P. 388 - 393
Published: Jan. 11, 2024
Language: Английский
Citations
14
Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(19), P. 8925 - 8937
Published: April 29, 2024
The development of efficient urea oxidation reaction (UOR) catalysts helps UOR replace the oxygen evolution (OER) in hydrogen production from water electrolysis. Here, we prepared Fe-doped Ni2P/NiSe2 composite catalyst (Fe–Ni2P/NiSe2-12) by using phosphating-selenizating and acid etching to increase intrinsic activity active areas. Spectral characterization theoretical calculations demonstrated that electrons flowed through Ni–P–Fe–interface–Ni–Se–Fe, thus conferring high Fe–Ni2P/NiSe2-12, which only needed 1.39 V vs RHE produce current density 100 mA cm–2. Remarkably, this potential was 164 mV lower than required for OER under same conditions. Furthermore, EIS driven Fe–Ni2P/NiSe2-12 exhibited faster interfacial reactions, charge transfer, response compared OER. Consequently, can effectively prevent competition with NSOR, making it suitable UOR-assisted Notably, when electrolysis is operated at a 40 cm–2, system achieve decrease 140 traditional This study presents novel strategy splitting energy-saving production.
Language: Английский
Citations
14
Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(8), P. 3702 - 3711
Published: Feb. 9, 2024
A long-term goal of rechargeable zinc-air batteries (ZABs) has always been to design bifunctional electrocatalysts that are robust, effective, and affordable for the oxygen reduction reaction (ORR) evolution (OER). It become a feasible method construct metal/metal oxide interfaces achieve superior electrocatalytic performance ORR OER by enhanced charge transfer. In this study, Co/Co
Language: Английский
Citations
13
Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(12), P. 7047 - 7057
Published: Jan. 1, 2024
This work proposes a microwave-pulse method for rapidly synthesizing highly tunable 2D porous nickel-enriched LaMn x Ni 1− O 3 comprehensive understanding of UOR activity mechanisms.
Language: Английский
Citations
11