Role of Water in Green Carbon Science DOI
Bo Peng, Kun Zhang, Yuhan Sun

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: April 11, 2025

Within the context of green chemistry, concept carbon science emphasizes balance and recycling to address challenge achieving neutrality. The fundamental processes in this field are oxidation reduction, which often involve simple molecules such as CO2, CO, CH4, CHx, H2O. Water plays a critical role nearly all oxidation-reduction processes, thus, it is central focus research science. can act direct source dihydrogen reduction reactions or participate reactions, frequently involving O-O coupling produce hydrogen peroxide dioxygen. At atomic level, involves statistically unfavorable proximity two atoms, requiring optimization through catalytic process influenced by types factors, described authors. Extrinsic factors related geometrical electronic criteria associated with metal, its d-orbitals (or bands case zerovalent metals electrodes). Intrinsic oxygen atoms via their p-orbitals. mesoscopic microscopic scale, reaction medium typically consists mixtures lipophilic hydrophilic phases water, may exist under supercritical conditions suspensions microdroplets. These predominantly occur at phase interfaces. A comprehensive understanding phenomena across these scales could facilitate improvements even lead development novel conversion processes.

Language: Английский

Operando Unraveling the Dynamic Correlation between Structure Evolution and Performance Shift during CO2 Electroreduction on In2O3 Electrodes DOI
Lushan Ma, Dongling Geng, Mengxi Tan

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125153 - 125153

Published: Feb. 1, 2025

Language: Английский

Citations

2
Screening of Binder Materials for Ag-Based Gas Diffusion Electrodes for CO2 Conversion to CO DOI Creative Commons
Prasad Gonugunta,

Khatereh Roohi,

Mohammad Soleimani

et al.

Industrial & Engineering Chemistry Research, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 17, 2025

Electrochemical CO2 reduction (CO2R) to chemicals and fuels has made tremendous progress since the introduction of gas diffusion electrodes (GDEs) overcome mass-transfer limitations enable industrial-scale current densities. The advancement in field, however, come with new challenges that are related stability degradation GDE due flooding issues, which currently hinder scale-up. Here, we investigated effect six different binding materials (Nafion, polytetrafluoroethylene, Fumion, Pention, poly(vinyl alcohol), polypyrrole) on performance Ag-based GDEs for CO2R CO alkaline media. All binders show a decrease Faraday efficiency (FE) increase hydrogen evolution reaction over time. most hydrophilic based polypyrrole can uphold higher FE longer times, is contrary common belief low wettability required long-term stability. By using range tools (SEM–EDX, SEM–FIB, X-ray diffraction, contact angle measurements) postelectrolysis characterization GDEs, loss flooding, bi(carbonate) precipitation, catalyst agglomeration. These results contribute better understanding issues GDE-based electrolyzers.

Language: Английский

Citations

1
High-Resolution Neutron Imaging of Water Transport in CO2 Electrolysis during Pulsed Operation DOI Creative Commons
Luca Bohn, Josephine N. Häberlein,

Frederik Brendel

et al.

ACS Energy Letters, Journal Year: 2025, Volume and Issue: unknown, P. 975 - 981

Published: Jan. 26, 2025

Language: Английский

Citations

0
Role of Water in Green Carbon Science DOI
Bo Peng, Kun Zhang, Yuhan Sun

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: April 11, 2025

Within the context of green chemistry, concept carbon science emphasizes balance and recycling to address challenge achieving neutrality. The fundamental processes in this field are oxidation reduction, which often involve simple molecules such as CO2, CO, CH4, CHx, H2O. Water plays a critical role nearly all oxidation-reduction processes, thus, it is central focus research science. can act direct source dihydrogen reduction reactions or participate reactions, frequently involving O-O coupling produce hydrogen peroxide dioxygen. At atomic level, involves statistically unfavorable proximity two atoms, requiring optimization through catalytic process influenced by types factors, described authors. Extrinsic factors related geometrical electronic criteria associated with metal, its d-orbitals (or bands case zerovalent metals electrodes). Intrinsic oxygen atoms via their p-orbitals. mesoscopic microscopic scale, reaction medium typically consists mixtures lipophilic hydrophilic phases water, may exist under supercritical conditions suspensions microdroplets. These predominantly occur at phase interfaces. A comprehensive understanding phenomena across these scales could facilitate improvements even lead development novel conversion processes.

Language: Английский

Citations

0