Unveiling Key Descriptors of Ionomer Materials for Enhanced Electrochemical CO₂ Reduction

ACS Energy Letters, Год журнала: 2025, Номер 10(1), С. 620 - 628

Опубликована: Янв. 3, 2025

Polymeric ionomers near the catalyst surface of CO2 reduction reaction (CO2RR) electrodes affect their efficiency; however, multifaceted properties complicate structure–activity relationship elucidation. Here, we synthesized polycarbazole-based anion-exchange (QPC) bearing varying functionalized side chains to explore this relationship. Comprehensive analysis in physicochemical properties, electrochemical activity, and operando ATR-SEIRAS revealed that functional group modification significantly influenced intrinsic ionomer thereby affecting Ag microenvironments interfacial water structures, kinetics protonation step for CO2RR hydrogen evolution (HER). Notably, QPC-trimethyl phosphonium (TMP) induced favorable having a high proportion strong H-bonded with low Stark tuning slopes, which inhibit HER promote CO2RR. A CO Faradaic efficiency (>90%) was maintained using QPC-TMP membrane electrode assembly, even under concentrations (100–15%) elevated temperatures (28–72 °C). These findings suggest catalytic environment can be optimized by fine-tuning structure, contributing advancement high-performance ionomers.

Язык: Английский

---

Electrocatalytic conversion of CO2 into selective carbonaceous fuels using metal-organic frameworks: An overview of recent progress and perspectives

Materials Today Chemistry, Год журнала: 2025, Номер 44, С. 102538 - 102538

Опубликована: Янв. 21, 2025

Язык: Английский

---

Novel technologies for CO2 conversion to renewable fuels, chemicals, and value-added products

Discover Nano, Год журнала: 2025, Номер 20(1)

Опубликована: Фев. 11, 2025

Population growth, urbanization, industrialization, and increased socioeconomic activities have escalated carbon dioxide (CO2) formation concentration in the atmosphere. Increased generation release of CO2 into atmosphere exacerbates global warming impedes environmental sustainability. One strategies to combat unpleasant impact is conversion useful products. This study reviews benefits, drawbacks, recommendations for effectively utilizing conventional, hybrid, novel technologies converting energy chemical The deficiencies noticed with chemical, thermal, biological, catalytic (CTs) necessitated use hybrid such as biochemical, electrochemical, photocatalytic, plasma chemical. posits that development deployment CTs like bio-electrochemical, photo-electrochemical, artificial photosynthesis will advance research domain revolutionize product formation. transformation renewable fuels methane, syngas, C2 products methanol, formic acid, dimethyl carbonate, oxygenates, formaldehyde, hydrocarbons is, eco-friendly, reduces air pollution, mitigates climate change, supports security, provides valuable feedstocks industries. recommends optimization process parameters reactor design configurations, funding, provision regulatory framework support, partnerships among academia, industry players, government agencies achieve cost reduction, reduce impacts, drawbacks associated CTs.

Язык: Английский

---

Electrochemical CO2 Reduction: Advances, Insights, Challenges, and Future Directions

Materials Today Sustainability, Год журнала: 2025, Номер unknown, С. 101089 - 101089

Опубликована: Фев. 1, 2025

Язык: Английский

---

Doping and defect engineering in carbon-based electrocatalysts for enhanced electrochemical CO2 reduction: From 0D to 3D materials

Advances in Colloid and Interface Science, Год журнала: 2025, Номер 339, С. 103429 - 103429

Опубликована: Фев. 6, 2025

Язык: Английский

---

Electrochemical Reduction of CO₂ using Solid Oxide Electrolysis Cells: Insights into Catalysis by Nonstoichiometric Mixed Metal Oxides

ACS Catalysis, Год журнала: 2022, Номер 12(18), С. 11456 - 11471

Опубликована: Сен. 6, 2022

Selective electrochemical reduction of CO2 using renewable energy sources to create platform molecules for synthesis fuels and chemicals has become a contemporary research area interest because its potential recycling minimizing the adverse environmental impacts CO2. Solid oxide electrolysis cells (SOECs) are solid-state devices with significant in this their ability efficiently selectively convert CO or, when coupled water electrolysis, produce syngas (CO H2). Both precursors existing technologies. While promising, SOECs limited by instability state-of-the-art cathode electrocatalyst, Ni/yttria-stabilized zirconia (YSZ) cermet, due redox properties deactivation carbon deposits. Nonstoichiometric mixed ionic electronic conducting oxides promising alternatives stability resistance carbon. Herein, we summarize literature derive trends that relate changes composition oxygen defects these activity, selectivity, both experimental theoretical studies. We also evaluate factors present challenges direct comparison performance SOEC electrocatalysts reported suggest possible solutions standardized protocols benchmarking SOECs. conclude summarizing providing an overview field along opportunities nonstoichiometric metal

Язык: Английский

---

Electrosynthesized CuMgAl Layered Double Hydroxides as New Catalysts for the Electrochemical Reduction of CO₂

Advanced Functional Materials, Год журнала: 2023, Номер 33(29)

Опубликована: Апрель 6, 2023

Abstract In this study, new nanostructured CuMgAl Layered Double Hydroxide (LDH) based materials are synthesized on a 4 cm 2 sized carbonaceous gas diffusion membrane. By means of microscopic and spectroscopic techniques, the catalysts thoroughly investigated, revealing presence several species within same material. one‐step, reproducible potentiodynamic deposition it is possible to obtain composite with an intimate contact between ternary LDH Cu 0 /Cu O species. The catalyst compositions investigated by varying: molar ratio total amount bivalent cations Al 3+ , loading, ratios among three in electrolyte. Each electrocatalyst has been evaluated catalytic performances toward electrochemical CO reduction CH 3 COOH at −0.4 V versus reversible hydrogen electrode liquid phase. optimized catalyst, that is, 2:1:1 exhibits productivity 2.0 mmol CH3COOH g cat −1 h . This result shows beneficial effects combining material like LDHs, alkaline nature, thus great affinity + species, which couples increase carbon sources availability redox mediator capable convert into C product.

Язык: Английский

---

Electrochemical advanced oxidation processes towards carbon neutral wastewater treatment: A review

Chemical Engineering Journal, Год журнала: 2023, Номер 480, С. 148044 - 148044

Опубликована: Дек. 11, 2023

Язык: Английский

---

Recent trend of metal promoter role for CO2 hydrogenation to C1 and C2+ products

South African Journal of Chemical Engineering, Год журнала: 2023, Номер 44, С. 14 - 30

Опубликована: Янв. 11, 2023

CO2 hydrogenation as sustainable route for generation of value-added carbon feedstock is identified green pathway mitigation greenhouse gasses emission. methanation one the promising solutions, which only requires reactions at atmospheric pressure while utilizing metal catalysts to overcome kinetic limitations. Metal can be promoted alter reducibities, adsorption capacities, and H2CO2 dissociation potential. The role promoter such rare earth elements (Ce, Mn, Co, La) alkali (Li, Na, Ca, K) will discussed within scope methanation. aspect modification towards hydrogen potential surface oxygen vacancy emphasized enhance selectivity methane. Another via further conversion into longer chain molecules olefin ethanol. benefit in this review on effect promoting CC coupling reaction producing alcohol light olefin. strategies develop active with introduction. For molecules, main Ni, Pd, Rh, their Ga, Cu, K discussed. A critical analysis mechanism discussed, particularly promoters stabilize intermediate maneuver catalytic desired products.

Язык: Английский

---

Electrochemical reduction of CO2: A roadmap to formic and acetic acid synthesis for efficient hydrogen storage

Energy Conversion and Management, Год журнала: 2024, Номер 314, С. 118601 - 118601

Опубликована: Июнь 14, 2024

Язык: Английский

---