Inorganic Chemistry Frontiers, Год журнала: 2024, Номер unknown
Опубликована: Ноя. 18, 2024
ZnCdS 2 /NiMoO 4 @Cu Z-scheme heterojunctions exhibit outstanding activity and nearly 100% selectivity for photocatalytic CO reduction to CH under the combined effects of surface defects, heterojunction photothermal properties.
Язык: Английский
Advanced Materials, Год журнала: 2024, Номер 36(30)
Опубликована: Июнь 14, 2024
Abstract Urea electrosynthesis from co–electrolysis of NO 3 − and CO 2 (UENC) offers a promising technology for achieving sustainable efficient urea production. Herein, diatomic alloy catalyst (CuPd 1 Rh –DAA), with mutually isolated Pd atoms alloyed on Cu substrate, is theoretically designed experimentally confirmed to be highly active selective UENC catalyst. Combining theoretical computations operando spectroscopic characterizations reveals the synergistic effect –Cu sites promote via tandem catalysis mechanism, where site triggers early C–N coupling promotes *CO –to–*CO NH steps, while facilitates subsequent protonation step *COOHNH toward formation. Impressively, CuPd –DAA assembled in flow cell presents highest Faradaic efficiency 72.1% yield rate 53.2 mmol h −1 g cat at −0.5 V versus RHE, representing nearly performance among all reported catalysts.
Язык: Английский
Процитировано
103
ACS Nano, Год журнала: 2025, Номер unknown
Опубликована: Янв. 24, 2025
Electrocatalytic CO2 reduction into high-value multicarbon products offers a sustainable approach to closing the anthropogenic carbon cycle and contributing neutrality, particularly when renewable electricity is used power reaction. However, lack of efficient durable electrocatalysts with high selectivity for multicarbons severely hinders practical application this promising technology. Herein, nanoporous defective Au1Cu single-atom alloy (De-Au1Cu SAA) catalyst developed through facile low-temperature thermal in hydrogen subsequent dealloying process, which shows toward ethylene (C2H4), Faradaic efficiency 52% at current density 252 mA cm–2 under potential −1.1 V versus reversible electrode (RHE). In situ spectroscopy measurements functional theory (DFT) calculations reveal that C2H4 product results from synergistic effect between Au single atoms Cu sites on surface catalysts, where promote *CO generation defects stabilize key intermediate *OCCO, altogether enhances C–C coupling kinetics. This work provides important insights design electrochemical products.
Язык: Английский
Процитировано
1
Advanced Materials, Год журнала: 2025, Номер unknown
Опубликована: Янв. 26, 2025
Abstract Electrochemical oxidation of small molecules shows great promise to substitute oxygen evolution reaction (OER) or hydrogen (HOR) enhance kinetics and reduce energy consumption, as well produce high‐valued chemicals serve fuels. For these reactions, high‐valence metal sites generated at oxidative potentials are typically considered active trigger the process molecules. Isolated atom site catalysts (IASCs) have been developed an ideal system precisely regulate state coordination environment single‐metal centers, thus optimize their catalytic property. The isolated in IASCs inherently possess a positive state, can be more readily homogeneous under than nanoparticle counterparts. Meanwhile, merely centers but lack ensemble sites, which alter adsorption configurations compared with counterparts, induce various pathways mechanisms change product selectivity. More importantly, construction is discovered limit d‐electron back donation CO 2p * orbital overly strong on resolve poisoning problems most electro‐oxidation reactions improve stability. Based advantages fields electrochemical molecules, this review summarizes recent developments advancements focusing anodic HOR fuel cells OER electrolytic alternative such formic acid/methanol/ethanol/glycerol/urea/5‐hydroxymethylfurfural (HMF) key reactions. merits different decoding structure–activity relationships specifically discussed guide precise design structural regulation from perspective comprehensive mechanism. Finally, future prospects challenges put forward, aiming motivate application possibilities for diverse functional IASCs.
Язык: Английский
Процитировано
1
ACS Catalysis, Год журнала: 2025, Номер unknown, С. 3674 - 3698
Опубликована: Фев. 14, 2025
Язык: Английский
Процитировано
1
Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(30), С. 18921 - 18947
Опубликована: Янв. 1, 2024
Single-atom catalysts (SACs) derived from metal–organic frameworks (MOFs) are revolutionizing electrocatalytic energy conversion.
Язык: Английский
Процитировано
7
Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(44)
Опубликована: Июль 26, 2024
Abstract The C−C coupling of methane (CH 4 ) and carbon dioxide (CO 2 to generate acetic acid 3 COOH) represents a highly atom‐efficient chemical conversion, fostering the comprehensive utilization greenhouse gases. However, inherent thermodynamic stability kinetic inertness CH CO present obstacles achieving efficient selective conversion at room temperature. Our study reveals that hydroxyl radicals (⋅OH) hydrated electrons (e aq − produced by water radiolysis can effectively activate , yielding methyl (⋅CH radical anions(⋅CO facilitate production COOH ambient introduction radiation‐synthesized CuO‐anchored TiO bifunctional catalyst could further enhance reaction efficiency selectivity remarkably boosting radiation absorption stability, resulting in concentration 7.1 mmol ⋅ L −1 with near‐unity (>95 %). These findings offer valuable insights for design implementation radiation‐induced conversion.
Язык: Английский
Процитировано
6
Journal of Materials Chemistry A, Год журнала: 2024, Номер unknown
Опубликована: Янв. 1, 2024
This manuscript comprehensively reviews the recent advancements in Cu-based atomic site catalysts NO 3 RR, following a sequential order with six sections: Introduction, Mechanism, SACs, SAAs, DACs, and Perspectives.
Язык: Английский
Процитировано
6
Energy & Environmental Science, Год журнала: 2024, Номер 17(20), С. 7649 - 7680
Опубликована: Янв. 1, 2024
This review explores the role of atomic metal site cocatalysts in photocatalysis for solar energy conversion, focusing on recent advances single-atom and cluster cocatalysts, their structure–activity relationships, key applications.
Язык: Английский
Процитировано
5
Industrial Chemistry and Materials, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
Building a sustainable energy system is currently major challenge. In this review, we introduce catalysis of promising systems, aiming to draw attention development in energy.
Язык: Английский
Процитировано
0
Advanced Functional Materials, Год журнала: 2025, Номер unknown
Опубликована: Март 20, 2025
Abstract Recently, dual‐atom alloy (DAA, also named diatomic alloy) catalysts with active metal dimers supported by a less host have attracted considerable interest owing to their distinctive geometric and electrical configurations. Despite developing many ways for synthesizing DAA catalysts, most contemporary methods depend on high‐temperature pyrolysis, costly apparatus, intricate procedures. This study presents, the first time, one‐step laser solid‐phase synthesis of (PtRu) 1 Co DAAs low‐defect graphene support via ultraviolet (UV) irradiation mixed precursors ZIF‐67@PBI composite support. The special structure enhances catalytic performance hydrogen evolution reaction (HER) in an alkaline solution. An overpotential 27 mV is reached at current density ‐10 mA cm⁻ 2 . mass activity 200 19.6 times more than that commercial Pt/C catalyst. Moreover, sustained stability over 100 h ‐200 cm −2 results demonstrated potential as viable method precise controlling defect formations nanoparticles carbon technique rapid cost‐effective opens up new avenue toward large‐scale catalysts.
Язык: Английский
Процитировано
0