
eScience, Journal Year: 2025, Volume and Issue: unknown, P. 100398 - 100398
Published: March 1, 2025
Language: Английский
eScience, Journal Year: 2025, Volume and Issue: unknown, P. 100398 - 100398
Published: March 1, 2025
Language: Английский
Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(13), P. 9434 - 9443
Published: March 20, 2024
Electrocatalytic synthesis of hydrogen peroxide (H2O2) in acidic media is an efficient and eco-friendly approach to produce inherently stable H2O2, but limited by the lack selective catalysts under industrial-relevant current densities. Herein, we report a diatomic cobalt catalyst for two-electron oxygen reduction efficiently H2O2 at 50–400 mA cm–2 acid. Electrode kinetics study shows >95% selectivity on sites. In flow cell device, record-high production rate 11.72 mol gcat–1 h–1 exceptional long-term stability (100 h) are realized high situ spectroscopic studies theoretical calculations reveal that introducing second metal into coordination sphere site can optimize binding strength key intermediates due downshifted d-band center cobalt. We also demonstrate feasibility processing municipal plastic wastes through decentralized production.
Language: Английский
Citations
62InfoMat, Journal Year: 2024, Volume and Issue: 6(8)
Published: July 16, 2024
Abstract Electrochemical transformation processes involving carbon, hydrogen, oxygen, nitrogen, and small‐molecule chemistries represent a promising means to store renewable energy sources in the form of chemical energy. However, their widespread deployment is hindered by lack efficient, selective, durable, affordable electrocatalysts. Recently, grain boundary (GB) engineering as one category defect engineering, has emerged viable powerful pathway achieve improved electrocatalytic performances. This review presents timely comprehensive overview recent advances GB for efficient electrocatalysis. The beneficial effects introducing GBs into electrocatalysts are discussed, followed an synthesis characterization GB‐enriched Importantly, latest developments leveraging enhanced electrocatalysis thoroughly examined, focusing on electrochemical utilization cycles nitrogen. Future research directions proposed further advance understanding application image
Language: Английский
Citations
50Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(12), P. 6295 - 6321
Published: Jan. 1, 2024
Developing sophisticated strategies to stabilize oxidative metal catalysts based on the correlation between dynamic oxidation state and product profile is favorable for efficient electrochemical CO 2 conversion.
Language: Английский
Citations
42Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)
Published: Aug. 21, 2024
The insufficient availability and activity of interfacial water remain a major challenge for alkaline hydrogen evolution reaction (HER). Here, we propose an "on-site disruption near-site compensation" strategy to reform the bonding network via deliberate cation penetration catalyst support engineering. This concept is validated using tip-like bimetallic RuNi nanoalloys planted on super-hydrophilic high-curvature carbon nanocages (RuNi/NC). Theoretical simulations suggest that tip-induced localized concentration hydrated K+ facilitates optimization dynamics intermediate adsorption. In situ synchrotron X-ray spectroscopy endorses H* spillover-bridged Volmer‒Tafel mechanism synergistically relayed between Ru Ni. Consequently, RuNi/NC exhibits low overpotential 12 mV high durability 1600 h at 10 mA cm‒2 HER, demonstrates performance in both electrolysis chlor-alkali electrolysis. offers microscopic perspective design manipulation local structure toward enhanced HER kinetics. A with optimized H2 reported. designed shows catalytic by achieving 13.6-fold higher mass than Pt/C.
Language: Английский
Citations
34Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown
Published: July 8, 2024
The local acidity at the anode surface during electrolysis is apparently stronger than that in bulk electrolyte due to deprotonation from reactant, which leads deteriorated electrocatalytic performances and product distributions. Here, an anode-electrolyte interfacial regulation strategy has been proposed inhibit acidification of enhance activity selectivity anodic reactions. As a proof concept, CeO
Language: Английский
Citations
24Inorganic Chemistry Frontiers, Journal Year: 2024, Volume and Issue: 11(14), P. 4080 - 4106
Published: Jan. 1, 2024
This summary describes the effects of wettability, local pH, interfacial water structure, and electrolyte composition on interface reactant compositions, key intermediate adsorption, reaction kinetics.
Language: Английский
Citations
19Chemical Society Reviews, Journal Year: 2024, Volume and Issue: unknown
Published: Jan. 1, 2024
This review systematically provides various insights into the pH effect on hydrogen electrocatalysis, and thus providing a reference for future development of electrocatalysis based these insights.
Language: Английский
Citations
19Nano Energy, Journal Year: 2025, Volume and Issue: unknown, P. 110693 - 110693
Published: Jan. 1, 2025
Language: Английский
Citations
3National Science Review, Journal Year: 2024, Volume and Issue: 11(11)
Published: Oct. 15, 2024
ABSTRACT An in-depth understanding of electrocatalytic mechanisms is essential for advancing electrocatalysts the oxygen evolution reaction (OER). The emerging oxide pathway mechanism (OPM) streamlines direct O–O radical coupling, circumventing formation vacancy defects featured in lattice (LOM) and bypassing additional intermediates (*OOH) inherent to adsorbate (AEM). With only *O *OH as intermediates, OPM-driven stand out their ability disrupt traditional scaling relationships while ensuring stability. This review compiles latest significant advances OPM-based electrocatalysis, detailing design principles, synthetic methods, sophisticated techniques identify active sites pathways. We conclude with prospective challenges opportunities electrocatalysts, aiming advance field into a new era by overcoming constraints.
Language: Английский
Citations
17Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(20), P. 11348 - 11434
Published: Oct. 9, 2024
Environmental catalysis has emerged as a scientific frontier in mitigating water pollution and advancing circular chemistry reaction microenvironment significantly influences the catalytic performance efficiency. This review delves into engineering within liquid-phase environmental catalysis, categorizing microenvironments four scales: atom/molecule-level modulation, nano/microscale-confined structures, interface surface regulation, external field effects. Each category is analyzed for its unique characteristics merits, emphasizing potential to enhance efficiency selectivity. Following this overview, we introduced recent advancements advanced material system design promote (e.g., purification, transformation value-added products, green synthesis), leveraging state-of-the-art technologies. These discussions showcase was applied different reactions fine-tune regimes improve from both thermodynamics kinetics perspectives. Lastly, discussed challenges future directions engineering. underscores of intelligent materials drive development more effective sustainable solutions decontamination.
Language: Английский
Citations
14