Chemical Communications, Год журнала: 2024, Номер unknown
Опубликована: Дек. 23, 2024
A two-dimensional amorphous iridium–cobalt oxide (Am-IrCo 5 O x ) was prepared, which exhibits a low overpotential of 230 mV at 10 mA cm −2 in 0.5 M H 2 SO 4 . DFT calculations show that the unsaturated Ir on surface acts as an active site.
Язык: Английский
Nano-Micro Letters, Год журнала: 2024, Номер 17(1)
Опубликована: Сен. 25, 2024
Abstract Green hydrogen from water splitting has emerged as a critical energy vector with the potential to spearhead global transition fossil fuel-independent society. The field of catalysis been revolutionized by single-atom catalysts (SACs), which exhibit unique and intricate interactions between atomically dispersed metal atoms their supports. Recently, bimetallic SACs (bimSACs) have garnered significant attention for leveraging synergistic functions two ions coordinated on appropriately designed BimSACs offer an avenue rich metal–metal metal–support cooperativity, potentially addressing current limitations in effectively furnishing transformations involve synchronous proton–electron exchanges, substrate activation reversible redox cycles, simultaneous multi-electron transfer, regulation spin states, tuning electronic properties, cyclic states low energies. This review aims encapsulate growing advancements bimSACs, emphasis pivotal role generation via splitting. We subsequently delve into advanced experimental methodologies elaborate characterization SACs, elucidate discuss local coordination environment. Overall, we present comprehensive discussion deployment bimSACs both evolution reaction oxygen reaction, half-reactions electrolysis process.
Язык: Английский
Процитировано
19
Bulletin of the Korean Chemical Society, Год журнала: 2025, Номер unknown
Опубликована: Фев. 19, 2025
Abstract Direct seawater splitting is a promising pathway for sustainable hydrogen (H 2 ) production. However, significant challenges persist, particularly at the anode, where high concentration of chloride ions induces competitive reactions between chlorine evolution reaction (CER) and oxygen (OER). Although gas (Cl has higher commercial value than (O ), selective generation often more advantageous large‐scale Compared with freshwater splitting, introduces additional complexities, including material degradation caused by corrosion. Therefore, development robust electrocatalysts essential to enhance long‐term system stability overall efficiency, as well enable Cl or O These make inherently complex splitting. This review provides comprehensive overview recent advancements in delving into fundamental mechanisms governing anode reactions, OER CER. In addition, we critically examine strategies control selectivity, focusing on designing that favor one over other, considering factors such catalyst composition structure. Finally, outline opportunities, challenges, design approaches guide future research technological
Язык: Английский
Процитировано
1
Matter, Год журнала: 2025, Номер unknown, С. 102091 - 102091
Опубликована: Март 1, 2025
Язык: Английский
Процитировано
0
APL Materials, Год журнала: 2025, Номер 13(5)
Опубликована: Май 1, 2025
Energy consumption has become a critical global challenge, demanding innovative and sustainable solutions. Consequently, there is an increasing demand for efficient durable electrocatalyst synthesis that can replace expensive noble metal-based catalysts water-splitting reactions. In this context, we have successfully synthesized composite material combining Zr-based metal–organic framework (MOF), UIO-66-NH2, with Fe2O3 derived from rust—a discarded waste material. The synergistic interaction between MOF enhances the catalytic performance by effectively structural advantages of active sites provided Fe2O3. results indicated was overpotential 209 mV at 10 mA/cm2 compared to pristine MOF. Moreover, demonstrated long-term durability more than 9 h under harsh acidic conditions, outperforming many conventional in terms stability, efficiency, cost-effectiveness. By transforming materials into high-performance composites, work presents approach addressing energy crisis, offering cost-effective environmentally friendly solution meet growing demands.
Язык: Английский
Процитировано
0
ACS Sustainable Chemistry & Engineering, Год журнала: 2024, Номер 12(42), С. 15307 - 15343
Опубликована: Окт. 11, 2024
The proton exchange membrane water electrolyzer (PEMWE) is regarded as the most promising technique to convert intermittent renewable energy sources into clean and storable hydrogen through electrocatalytic splitting. However, commercial electrocatalysts for evolution reaction (HER) oxygen (OER) are based on expensive platinum group metals (PGMs), which predominantly hinder large-scale application of PEMWE. Single-atom (SAECs) with atomic level dispersion metal active sites can greatly minimize usage amount precious while keeping efficient activities. These advantages make SAECs attractive their in In this review, mechanism HER OER, together general synthesis strategies SAECs, was introduced discussed. Subsequently, recent development (non)precious acidic HER, overall splitting summarized, highlighted understanding between electronic structure performance. Finally, challenges perspectives proposed.
Язык: Английский
Процитировано
3
International Journal of Hydrogen Energy, Год журнала: 2024, Номер 80, С. 308 - 321
Опубликована: Июль 16, 2024
Язык: Английский
Процитировано
2
Ceramics International, Год журнала: 2024, Номер 50(21), С. 42169 - 42175
Опубликована: Авг. 3, 2024
Язык: Английский
Процитировано
1
Membranes, Год журнала: 2024, Номер 14(11), С. 228 - 228
Опубликована: Окт. 30, 2024
Due to the objectives established by European Union and other countries, hydrogen production will be a key technology in coming decades. There are several starting materials procedures for its production. All methods have advantages disadvantages, improvements their performance decreases operational costs decisive determining which of them is implemented. For all cases, including storage transport hydrogen, membranes determine process, as well costs. The present contribution summarizes most recent membrane technologies main production, challenges overcome each case.
Язык: Английский
Процитировано
1
ChemSusChem, Год журнала: 2024, Номер unknown
Опубликована: Сен. 30, 2024
Abstract As the global energy structure evolves and clean technologies advance, electrocatalysis has become a focal point as critical conversion pathway in new sector. Transitional metal electrocatalysts (TMEs) with their distinctive electronic structures redox properties show great potential electrocatalytic reactions. However, complex reaction mechanisms kinetic limitations hinder improvement of efficiency, highlighting necessity for comprehensive studies on performance electrocatalysts. X‐ray Absorption Fine Structure (XAFS) spectra stand out robust tool examining electrocatalyst′s due to its atomic selectivity sensitivity local environments. This review delves into application XAFS technology characterizing TMEs, providing in‐depth analyses Near‐Edge (XANES) spectra, Extended (EXAFS) both R‐space k ‐space. These reveal intrinsic structural information, interactions, catalyst stability, aggregation morphology. Furthermore, paper examines advancements in‐situ techniques real‐time monitoring active site changes, capturing intermediate transitional states, elucidating evolution species during insights deepen our understanding structure‐activity relationship offer valuable guidance designing developing highly stable
Язык: Английский
Процитировано
0
Journal of Materials Chemistry A, Год журнала: 2024, Номер unknown
Опубликована: Янв. 1, 2024
Through material-driven inverse analysis, the acid-tolerant high-entropy catalyst, composed of Al, Au, Ir, Nb, Pt, Rh, Ru, and Ta, exhibited superior catalytic activity stability in acidic environments, outperforming Pt IrO 2 catalysts.
Язык: Английский
Процитировано
0