Research Status, Challenges, and Future Prospects of Carbon Dioxide Reduction Technology

Energy & Fuels, Journal Year: 2024, Volume and Issue: 38(6), P. 4836 - 4880

Published: March 12, 2024

The survival and sustainable development of humanity are gravely threatened by climate change, which has recently been elevated to the status one greatest threats humanity's security on a worldwide scale. In response global how obtain renewable clean fuels is an important challenge for human society. order reach carbon peak attain neutrality, using CO2 as resource become crucial aim civilization. Converting into chemical products with higher added value, that is, utilization technology can not only achieve emission reduction but also have certain economic benefits. technologies primarily include photocatalytic reduction, electrocatalytic thermal catalytic relay catalysis. This paper mainly summarizes mechanism conversion research related catalysts, discusses prospects system (catalyst modification, product selectivity improvement, etc.). ideas guidance provided efficient stable catalysts application in areas environment energy.

Language: Английский

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Review on CO₂ Management: From CO₂ Sources, Capture, and Conversion to Future Perspectives of Gas-Phase Electrochemical Conversion and Utilization

Energy & Fuels, Journal Year: 2024, Volume and Issue: 38(4), P. 2708 - 2742

Published: Feb. 6, 2024

Fossil organic chemicals are the main resources for both energy demands and industrial chemistry. Burning or decomposing of these materials releases carbon dioxide (CO2) monoxide (CO), causing global environmental changes. This issue is concern related to current earth situation. It could be a critical task that excess CO2 captured converted into original resources. In this overview, origin withdrawing mechanism thermodynamics, kinetics, pathway reduction reaction summarized, then methods briefly compared with respect commercialization capability. Electrochemistry known as green cost-effective technique, which motivates many chemical reactions in technological areas. Conversion intrinsic assisted by electrochemistry an imperative subject terms demand greenhouse gas control. However, some drawbacks such less dissolution aqueous electrolytes low selectivity products decrease efficiency recycling use electrochemical procedures. Next, recent trends development electrocatalysts various factors reviewed. After that, challenges liquid-phase insights gas-phase diffusion electrode (GDE) summarized. Taking account techno-economic analysis, future GDE conversion new advanced procedures toward improving stability high faradaic discussed. Finally, brief discussion about Li/CO2 batteries H2/CO2 fuel cells combined CO2/H2O electrolysis management utilization presented.

Language: Английский

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Steering CO Selectivity in CO₂ Electroreduction over Silver Microtubular Gas-Diffusion Electrodes via Surface Reconstruction

Energy & Fuels, Journal Year: 2024, Volume and Issue: 38(11), P. 10096 - 10105

Published: May 10, 2024

An efficient gas diffusion electrode (GDE) is crucial for enhancing mass transport involving gas-phase CO2 conversion in the electrochemical reduction reaction (CO2RR). Microtubular hollow fiber GDE (HFGDE) with a porous hierarchical wall has garnered significant attention, which can modulate triple-phase zone and improve performance of CO2RR. Simultaneously, engineering nano/microstructure surfaces electrocatalysts have been demonstrated to effectively enhance selectivity activity Here, we developed microparticle Ag-based HFGDE via an situ oxidation–reduction method. Both CO showed enhancement over pristine thermal reduced Ag without surface reconstruction. At −1.2 V vs RHE, faradaic efficiency 94%, partial current density 83.4 mA cm–2, surpassing that treatment electrodes, only 26% 12.3 cm–2. The distinctive reconstruction on electrocatalyst could be attributed decreasing activation energy barrier rate-limiting step initial electron/proton transfer. This work represents facile strategy as advanced materials conversion.

Language: Английский

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Nano‐High Entropy Materials in Electrocatalysis

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 19, 2024

Abstract High entropy materials (HEMs) compositing of at least five elements have gained widespread attention in the field electrocatalysis due to their tunable activities and high stability. These intrinsic properties can be further highlighted when size HEMs comes nanoscale. In nanostructured HEMs, fascinating including large composition space, multi‐element synergy, configuration are expected endow nano‐HEMs with excellent catalytic activity stability, thus providing greater potential for design advanced electrocatalysts. this review, differentiated detail dimensions common synthesis methods summarized. Additionally, from perspective complex nanostructure‐performance relationship, applications systems, water‐splitting (hydrogen evolution reaction (HER), oxygen (OER)), hydrogen oxidation (HOR), reduction (ORR), carbon dioxide (CO 2 RR), nitrogen (NRR) alcohol (AOR) discussed. Finally, main challenges faced by underscored. This review is provide more insights into understanding developing efficient electrocatalytic practical applications.

Language: Английский

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Advanced Strategies for Mitigating Catalyst Poisoning in Low and High Temperature Proton Exchange Membrane Fuel Cells: Recent Progress and Perspectives

Crystals, Journal Year: 2025, Volume and Issue: 15(2), P. 129 - 129

Published: Jan. 24, 2025

Catalyst poisoning remains a persistent barrier to the efficiency and longevity of electrocatalytic energy conversion devices, namely fuel cells. To address this challenge, review provides systematic investigation recent advancements in mitigation strategies, with particular emphasis on surface engineering, alloying, combined approaches. Notable developments include rational design Pt-alloy catalysts enhanced CO, H2S, H3PO4 tolerance as well implementation anti-poisoning molecular architectures carbon-based protective layers. These methods collectively show considerable promise for improving catalytic activity by fine-tuning electronic structures minimizing interactions undesired adsorbates. In addition presenting comprehensive overview current progress, identifies promising future directions, guiding realization robust, poison-tolerant crucial sustainable technologies.

Language: Английский

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Single-Pass Electrooxidation of Glycerol on Bismuth-Modified Platinum Electrodes as an Anodic Process Coupled to the Continuous CO₂ Electroreduction toward Formate

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(9), P. 3671 - 3679

Published: Feb. 21, 2024

CO2 electroreduction has emerged as a promising strategy for reducing emissions while simultaneously generating valuable products, particularly formic acid/formate. To further enhance the sustainability of this process, traditional oxygen evolution reaction at anode can be replaced by more interesting like glycerol oxidation to high value-added in covalorization approach. In study, effect presence bismuth (Bi) atom supplier (Bi2O3 particles) anolyte solution during electrooxidation process on platinum (Pt) electrodes coupled with formate is investigated first time, operating continuous mode single pass through reactor. The results reveal that cathode, significant HCOO– production, Faradaic efficiencies reaching 93%, and modest energy consumption 208 kW h·kmol–1 were obtained using Bi gas diffusion electrodes. On other hand, anode, Bi2O3 particles leads alteration distribution high-value-added products obtained. For instance, demonstrates remarkable dihydroxyacetone (DHA) production 283 μmol·m–2·s–1, surpassing nonmodified Pt performance system offers pathway simultaneous coproduction from both glycerol.

Language: Английский

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Electrochemical CO₂ Conversion Commercialization Pathways: A Concise Review on Experimental Frontiers and Technoeconomic Analysis

Environmental Science & Technology Letters, Journal Year: 2024, Volume and Issue: 11(11), P. 1161 - 1174

Published: Sept. 17, 2024

Technoeconomic analysis (TEA) studies are vital for formulating guidelines that drive the commercialization of electrochemical CO2 reduction (eCO2R) technologies. In this review, we first discuss progress in field eCO2R processes by providing current state-of-the-art metrices (e.g., faradic efficiency, density) based on recent heterogeneous catalysts' discovery, electrolytes, electrolyzers configuration, and electrolysis process designs. Next, assessed TEA a wide range final products, different modes systems/processes, discussed their relative competitiveness with relevant commercial products. Finally, challenges future directions essential linking suggestions from studies. We believe review will catalyze innovation advanced strategies to meet benchmarks conversion into valuable chemicals at industrial scale.

Language: Английский

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Theoretical Systematic investigation as a Strategic Tool for the design of more efficient pure and doped MoS2 catalysts for CO2 Electroreduction

Chemical Physics, Journal Year: 2025, Volume and Issue: 591, P. 112597 - 112597

Published: Jan. 6, 2025

Language: Английский

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Dipropyne‐Modified N‐Heterocyclic Carbene Stabilized Atomically Precise Copper(I) Nanocluster Catalysts for CO₂ Electroreduction

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 25, 2025

Abstract Atomically precise copper(I) nanoclusters with stable active sites are highly sought‐after catalysts for the electrocatalytic CO₂ reduction reaction (CO₂RR), providing an exceptional platform to elucidate structure–activity relationships. However, rational synthesis of robust copper as effective electrocatalysts and understanding relationship between a more realistic site its performance remain significant challenge due their inherent instability. Here, novel dipropyne‐modified NHC ligand is elaborately devised two atomically nanoclusters, [Cu 17 H 6 (NHC ) 4 (dppm) ] 3+ ( Cu17a Ph Cu17b ), both exhibiting distinct unique square orthobicupola Cu core J 28 , Johnson solid). The σ‐ π‐bonding ligands imparts ultrahigh stability while coordination pattern μ 7 ‐ η σ 1 : π 2 facilitates exposure neighboring atoms, generating accessible catalytic sites. Electrocatalytic CO experiments show that achieves highest Faradaic efficiency ethylene production among reported nanoclusters. tandem mechanism RR elucidated through combination theoretical calculations attenuated total reflection‐surface‐enhanced IR absorption spectroscopy (ATR‐SEIRAS). This work not only introduces synthesizing but also offers critical insights into molecular design principles catalysts.

Language: Английский

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Identification of catalyst optimization trends for electrocatalytic CO₍₂₎ reduction to ethylene

EES Catalysis, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

In this perspective we analyze copper and copper-based electrocatalysts with high ethylene selectivities from the literature to identify global catalyst formulation trends that allow for making catalysts improved performance.

Language: Английский

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