Review on strategies for improving the added value and expanding the scope of CO₂ electroreduction products

Chemical Society Reviews, Год журнала: 2024, Номер 53(10), С. 5149 - 5189

Опубликована: Янв. 1, 2024

This review summarizes promising strategies including the design of catalysts and construction coupled electrocatalytic reaction systems, aimed at achieving selective production various products from CO 2 electroreduction.

Язык: Английский

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Fabrication and optimization of perovskite-based photoanodes for solar-driven CO2 photoelectroreduction to formate

Catalysis Today, Год журнала: 2024, Номер 429, С. 114505 - 114505

Опубликована: Янв. 2, 2024

The photoelectrochemical reduction of CO2 to value-added products represents a promising strategy for mitigating emissions. However, further research efforts need be undertaken enable the technology scale-up, including design and fabrication efficient photoelectrodes capable yielding substantial photogenerated current densities. In this work, photoanode combining commercial calcium titanate perovskite (CaTiO3) BiVO4 layers coated onto transparent FTO substrate by automated spray pyrolysis is proposed. Different configurations are tested, with most favourable results achieved when positioned as top layer back illumination. optimization catalytic loading also assessed, finding an optimal at 1 mg cm-2 CaTiO3 3 BiVO4, resulting in impressive density –71 mA –1.8 V vs. Ag/AgCl. This then integrated into electrolyzer continuous visible light-driven gas phase formate, obtaining concentration 63.8 g L-1, Faradaic Efficiency 79.1%, solar-to-fuel conversion efficiency 7.6%. These represent significant advancement development photoanodes, offering promise future scalability processes.

Язык: Английский

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Halloysite-kojic acid conjugate: A sustainable material for the photocatalytic CO2 reduction and fixation for cyclic carbonates production

Journal of CO2 Utilization, Год журнала: 2024, Номер 85, С. 102865 - 102865

Опубликована: Июль 1, 2024

This study introduces a straightforward synthesis method for producing hybrid material composed of halloysite and kojic acid, which catalyzes carbon dioxide (CO2) conversion processes. Kojic derived from malted rice fermentation, exhibits inherent chelating properties that facilitate the introduction copper ions onto material's surface. Copper ions, an economically viable alternative to noble metals, catalyze CO2 reactions effectively. The catalyst was evaluated two distinct pathways: photocatalytic methane production under simulated sunlight fixation into cyclic carbonates via epoxide reactions. demonstrates remarkable catalytic activity mild conditions, achieving high efficiencies at 45 °C 70 carbonate atmospheric pressure. Conversion 31 % 89 were achieved reduction fixation, respectively. FT-IR spectra confirmed functionalization material. Additionally, its organic/inorganic nature is complemented by excellent thermal stability, as studied TGA. It enables repeated utilization, maintaining 25 after fourth reuse. research highlights potential using naturally materials sustainable mitigation.

Язык: Английский

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Renewable synthetic fuels: Research progress and development trends

Journal of Cleaner Production, Год журнала: 2024, Номер 450, С. 141849 - 141849

Опубликована: Март 25, 2024

Язык: Английский

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Coupling Ni-based anodes for textile industry process stream electrooxidation with electrocatalytic CO2 reduction to formate in gas phase

Journal of CO2 Utilization, Год журнала: 2025, Номер 93, С. 103053 - 103053

Опубликована: Фев. 28, 2025

Язык: Английский

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Exploring the impact of partial pressure and typical compounds on the continuous electroconversion of CO2 into formate

Journal of CO2 Utilization, Год журнала: 2024, Номер 81, С. 102735 - 102735

Опубликована: Март 1, 2024

Previous research in CO2 electroreduction primarily focused on cathodic electrocatalysts and electrode configurations using pure CO2. Few studies explored the impact of residence time N2/O2 compounds, crucial for practical industrial implementation. In this study, effect influence N2 O2 compounds to formate are investigated, employing Bi carbon-supported nanoparticles form Gas Diffusion Electrodes within an electrochemical flow reactor with a single pass reactants. The results highlight critical role electroconversion process. On one hand, evaluation holds paramount significance potential establishment large-scale recycling plant, as it has significantly both capital operational costs integrated electrolyzer-separator system. Optimal obtained range times between 1.8 2.9 seconds, corresponding rates 150 250 mL·min−1, respectively. other study resulted promising Faradaic Efficiency 75.0%, similar values achieved at concentrations 75 – 100 vol%. These particularly noteworthy they demonstrate that achieving capture efficiency 100% is not necessary, thereby reducing associated process and, consequently, overall cost integrating utilization processes plant.

Язык: Английский

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Research progress of MOF-based materials in photocatalytic reduction of CO2 and N2

Chem Catalysis, Год журнала: 2024, Номер 4(6), С. 100929 - 100929

Опубликована: Фев. 27, 2024

Язык: Английский

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Photoelectrochemical CO2 reduction with copper-based photocathodes

Journal of CO2 Utilization, Год журнала: 2023, Номер 79, С. 102639 - 102639

Опубликована: Дек. 11, 2023

The excessive consumption of fossil fuels has led to a rapid surge in atmospheric CO2 concentration, triggering severe energy crises and environmental concerns. In this context, photoelectrochemical (PEC) technology for reduction is perceived as highly appealing resolution, due its integration the advantages offered by both photocatalysis electrocatalysis. Undoubtedly, photocathode plays pivotal role within PEC system. Among various catalysts, copper (Cu)-based photocathodes have garnered significant attention owing their low toxicity, affordability, advantageous band gap distinctive active sites that enable conversion into diversity products including carbon monoxide (CO), formic acid (HCOOH), methane (CH4), ethylene (C2H4), ethanol (C2H5OH) so on. This review primarily delves current developments Cu-based reduction, encompassing aspects like material fabrication processes modification techniques. Subsequently, an analysis presented regarding reaction mechanisms underlying different products. Finally, anticipatory perspective provided future research field reduction. enables researchers promptly capture latest advancements offers valuable insights on design synthesis photocathode, provides guideline achieve enhanced improvements conversion.

Язык: Английский

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Exploring the frontiers of electrochemical CO2 conversion: A comprehensive review

Nano Materials Science, Год журнала: 2024, Номер unknown

Опубликована: Июль 1, 2024

The electrochemical conversion of carbon dioxide into valuable products is pivotal for maintaining the global cycle and mitigating warming. This review explores advancements in CO2 conversion, particularly focusing on producing methanol, ethanol, n-propanol using various catalysts such as metals, metal oxides, alloys, organic frameworks. Additionally, it covers photoelectrochemical (PEC) alcohols. primary objective to identify efficient electrocatalysts production, prioritizing selectivity, stability, Faradaic efficiency (FE), current density. Notable include PtxZn nanoalloys, which exhibit an FE ∼81.4 ​% methanol trimetallic Pt/Pb/Zn aimed at reducing Pt costs while enhancing catalyst stability durability. Metal oxide like thin film Cu2O/CuO nickel foam Cu2O/ZnO achieve values ∼38 ∼16.6 respectively. Copper-based metal-organic frameworks, Cu@ Cu2O, demonstrate ∼45 production. Similarly, Ag0.14/Cu0.86 Cu–Zn alloys FEs ∼63 ∼46.6 ​%, respectively, ethanol Notably, production via Pd–Cu alloy graphene/ZnO/Cu2O yields ∼13.7 ∼23 Furthermore, discusses recent PEC reactor design, photoelectrodes, reaction mechanisms, By evaluating these devices liquid fuel addresses challenges prospects obtaining products.

Язык: Английский

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Electrocatalytic CO₂ Reduction for Dynamic C₁, C₂, and C₃₊ Chemistry over Electrodeposited Zn on Cu and CuZn Mesh Supports

Energy & Fuels, Год журнала: 2024, Номер 38(16), С. 15497 - 15514

Опубликована: Июль 30, 2024

The electrodeposition of Cu and Zn onto bare CuZn mesh supports offers a straightforward method for fabricating novel electrodes electrochemical CO2 reduction (EC CO2R). This study evaluates the performance these modified by assessing their Faradaic efficiency (FE) under various conditions including different electrolytes, concentrations, applied potentials, recycling effects, Nafion treatment. products were categorized into several groups: C1 gaseous (CO CH4), C2 (C2H4 C2H6), C3,4 hydrocarbons, major C1/C2/C3 liquid (formate, ethanol, propanol), minor (methanol, acetate, acetaldehyde, isopropanol). We evaluated dynamic FE variations experimental conditions. production C2+ hydrocarbons through EC CO2R was found to be analogous conventional Fischer–Tropsch synthesis, highlighting pivotal roles *CO *CHx intermediates. study's insights C1, C2, C3+ product chemistry aid in further development Cu-based electrocatalysts.

Язык: Английский

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