ACS Sustainable Chemistry & Engineering, Год журнала: 2024, Номер 12(41), С. 15228 - 15239
Опубликована: Окт. 2, 2024
Язык: Английский
Applied Surface Science, Год журнала: 2025, Номер unknown, С. 162401 - 162401
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
3
Advanced Functional Materials, Год журнала: 2025, Номер unknown
Опубликована: Янв. 2, 2025
Abstract Electrochemical 5‐hydroxymethylfurfural oxidation reaction (HMFOR) offers a promising approach to producing valuable chemicals and facilitating coupled H 2 production. A significant challenge in the HMFOR lies elucidating interaction mechanisms between active sites (HMF). However, unpredictable reconstruction of during catalytic process complicates understanding these mechanisms. In this study, novel heterojunction (CoSe @NiSe‐CoSe /NF) is synthesized using straightforward hydrothermal method combined with classical selenization. This demonstrates exceptional electrocatalytic performance for direct HMF oxidation, achieving Faradaic efficiency 2,5‐furanedicarboxylic acid (FDCA) up 97.9%. Notably, it requires only 1.29 V versus RHE achieve current density 10 mA cm −2 HMFOR‐assisted hydrogen evolution (HER). The high activity primarily arises from interfacial electron redistribution. Specifically, Co modulates band structure Ni, Se serving as intermediary. modulation increases adsorption energy reduces barrier rate‐determining step HMFOR. research not achieves selective synthesis high‐value but also provides comprehensive analysis structure‐performance relationship catalyst, offering new pathway development efficient heterogeneous catalysts.
Язык: Английский
Процитировано
2
Advanced Energy Materials, Год журнала: 2024, Номер 14(43)
Опубликована: Авг. 2, 2024
Abstract Electrocatalytic conversion of biomass‐derived 5‐hydroxymethylfurfural (HMF) to value‐added 2,5‐furandicarboxylic acid (FDCA) is great significance in compensating for the rapid consumption fossil resources. However, it a challenge further improve performance HMF electrocatalytic oxidation (HMFOR) by synergistic kinetics (active sites) and thermodynamics (adsorption sites). In this work, Al(OH) 3 /Co(OH) 2 successfully fabricated as an efficient catalyst, its catalytic mechanism clarified. Extended X‐ray absorption fine structure (EXAFS) analysis demonstrate that electrochemically generated Co 3+ main site oxidation. The equilibrium adsorption capacity reach 57.0 mg g −1 , which effectively increase initial concentration substrate promoted reaction rate. combined results, based on 24 stable cycles FDCA yield retention rate 98.6% after 180 days, are highest ever achieved. Additionally, shown system can oxidize four other substrates. Therefore, work provides insight into hydroxide catalyst owes efficiency synergy between active sites.
Язык: Английский
Процитировано
13
Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер unknown, С. 124743 - 124743
Опубликована: Окт. 1, 2024
Язык: Английский
Процитировано
10
Advanced Materials, Год журнала: 2025, Номер unknown
Опубликована: Янв. 28, 2025
Abstract Electrochemical oxidation of biomass‐derived 5‐hydroxymethylfurfural (HMF) provides an environmentally friendly route for producing the sustainable polymer monomer 2,5‐furandicarboxylic acid (FDCA). Thus, precisely adjusting synergistic adsorption among key reactive species, such as HMF and OH ads , on carefully designed catalyst surface is essential achieving satisfactory catalytic performance to FDCA it closely related strength configuration reaction substrates. This kind regulation will ultimately facilitate improvement performance. In this work, Pt nanoparticles modified CuO nanowires (denoted Pt/CuO@CF) are constructed selective electrooxidation under alkaline conditions. The well‐designed Pt/CuO@CF demonstrates highly impressive across a range concentrations, ranging from commonly used concentrations higher levels typically not explored (10, 25, 50, 75, 100 m ) with high FE (all above 95%) outstanding long‐term stability (15 cycles). situ experimental characterizations confirm that heterogeneous interface between enhances enrichment species surface. Theoretical calculations reveal anchored reduce barrier thereby promoting FDCA.
Язык: Английский
Процитировано
1
Energy & Environmental Science, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
A ligand-modified catalyst, Ni(OH) 2 –TPA, is synthesized for efficient HMF oxidation, wherein the uncoordinated carboxylate functions as proton relay center, enabling continuous oxidation in a flowing system.
Язык: Английский
Процитировано
1
Nature Communications, Год журнала: 2024, Номер 15(1)
Опубликована: Ноя. 14, 2024
The low-potential aldehyde oxidation reaction can occur at low potential (~0 VRHE) and release H2 the anode, enabling hydrogen production with less than one-tenth of energy consumption required for water splitting. Nevertheless, activity stability Cu catalysts remain inadequate due to oxidative deactivation Cu-based materials. Herein, we elucidate reactivation cycle electrocatalyst develop a self-reactivating PdCu catalyst that exhibits significantly enhanced stability. Initially, in-situ Raman spectroscopy confirm involved in electrochemical non-electrochemical reduction. Subsequently, X-ray absorption fine structure reveal Pd component accelerates rate reduction, thereby enhancing electrocatalyst. Finally, bipolar device is assembled utilizing electrocatalyst, which deliver current 400 mA cm−2 0.42 V operate continuously 120 h. This work offers guidance enhance system. A dual-side system more efficient splitting but suffers from issues. Here, authors report operates stably h, offering an alternative solution energy-efficient production.
Язык: Английский
Процитировано
7
Green Chemistry, Год журнала: 2024, Номер 26(21), С. 10739 - 10773
Опубликована: Янв. 1, 2024
This paper summarizes the latest research progress in selective photocatalytic, electrocatalytic, and photoelectrocatalytic oxidation of HMF, along with reaction mechanisms, advantages, challenges faced during HMF oxidation.
Язык: Английский
Процитировано
6
Inorganic Chemistry, Год журнала: 2024, Номер 63(35), С. 16541 - 16553
Опубликована: Авг. 21, 2024
Electrocatalytic conversion of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA) is significant for the sustainable production value-added chemicals. Active sites catalysts could enhance activity and selectivity HMF oxidation reaction (HMFOR), but self-healing ability active has been commonly ignored. In this work, Co(OH)2/Ni-MOF was successfully fabricated efficient FDCA under mild conditions. Electrochemical cyclic stability experiments demonstrated high properties dual (Co3+/Ni3+). So, retention rate yield can still reach 98.5%, even after 90 days. HMFOR further coupled with 4-nitrophenol hydrogenation, which promotes Faradaic efficiency about 100%. Therefore, study explores species provides new insights designing catalysts.
Язык: Английский
Процитировано
5
Advanced Science, Год журнала: 2024, Номер unknown
Опубликована: Ноя. 4, 2024
Abstract The electrocatalytic oxidation of 5‐hydroxymethylfurfural (HMF) provides a feasible approach for the efficient utilization biomass. Defect regulation is an effective strategy in field biomass upgrading to enhance adsorption capacity reactants and thus increase activity. However, how select appropriate strategies regulate over‐enrichment induced by excessive oxygen vacancy still huge challenge. In this work, defect‐filling design construct element‐filled site layered double hydroxide (S─Ov─LDH) adopted, which achieves significant reduction electrolysis potential platform molecule HMF reaction current density. Physical characterizations, electrochemical measurements, theoretical calculations prove that formation metal─S bond second shell effectively regulates electronic structure material, weakening over‐strong OH − vacancy, promoting high‐valence Co 3+ during reaction, forming new sites. This work discusses catalytic enhancement mechanism defect filling detail, fills gap upgrading, favorable guidance further development strategies.
Язык: Английский
Процитировано
5