{"title":"Initial results of a pilot project for sub-seabed basalt storage of carbon dioxide on the Reykjanes Ridge","authors":"","doi":"10.1016/j.ccst.2024.100265","DOIUrl":"10.1016/j.ccst.2024.100265","url":null,"abstract":"<div><p>To meet temperature goals that limit warming to well below 2 °C requires the removal of hundreds of billions of tonnes of CO<sub>2</sub> from the atmosphere over the course of this century. Effective Carbon Dioxide Removal (CDR) methodologies will be required to reduce net emissions in the near term, counterbalance residual CO<sub>2</sub> emissions to achieve net-zero in the medium term, and contribute to net-negative emissions in the longer term – all of this in a sustainable and safe manner. This paper summarizes the research objectives and selected initial results of a collaborative project to assess CO<sub>2</sub> storage in the upper ocean crust south of Iceland.</p><p>The AIMS<sup>3</sup> project (<span><span>www.aims3.cdrmare.de</span><svg><path></path></svg></span>) will deliver new insights, monitoring tools and feasibility assessments for CO<sub>2</sub> storage in young, reactive basalts with little sedimentary cover. Along the flank of the Mid-Atlantic Ridge, we have done geophysical surveys and drilled a transect of boreholes in order to identify fluid migration in the upper ocean crust. Both in situ heat flow and geochemical signatures provide irrefutable evidence for such transport, which will help distributing injected CO<sub>2</sub> in future experiments.</p><p>In parallel, our project also has mineralization experiments to assess optimal conditions for injection dissolved, liquid, or supercritical CO<sub>2</sub>), numerical modelling for upscaling our results from seagoing work, and development of cost-effective sensors and smart robotic landers for long-term monitoring of the vicinity of the boreholes. We outline the rationale of AIMS<sup>3</sup>, provide an overview of the activities, and highlight some of the expedition results, with the goal to stimulate communication and collaboration.</p></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772656824000770/pdfft?md5=7212df02b58b3684e7b8be46175e1b60&pid=1-s2.0-S2772656824000770-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141963176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Bifunctionality of amine-modified metal-organic frameworks for CO2 capture and selective utilization in cycloaddition","authors":"","doi":"10.1016/j.ccst.2024.100262","DOIUrl":"10.1016/j.ccst.2024.100262","url":null,"abstract":"<div><p>In this study, copper- and chromium-based (HKUST-1 and MIL-101(Cr), respectively) metal-organic frameworks (MOF) functionalized with amine groups (HKUST-1‒NH<sub>2</sub> and MIL-101(Cr)‒NH<sub>2</sub>, respectively) were directly synthesized using 2-aminoterephthalic acid as an organic linker via hydrothermal method without adding hydrofluoric acid. They were then investigated for their potential applications in dynamic carbon dioxide (CO<sub>2</sub>) adsorption and conversion of epoxides with CO<sub>2</sub>. The functionalized MOF (HKUST-1‒NH<sub>2</sub> and MIL-101(Cr)‒NH<sub>2</sub>) retained their desired textural properties, while gaining a significantly enhanced Lewis basic character for CO<sub>2</sub> capture and catalysis application. Both HKUST-1‒NH<sub>2</sub> and MIL-101(Cr)‒NH<sub>2</sub> not only showed an improved CO<sub>2</sub> uptake capability, but also an excellent and stable regenerability over multiple adsorption-desorption cycles. MIL-101(Cr)‒NH<sub>2</sub> exhibited a higher performance than the parent MOF and HKUST-1‒NH<sub>2</sub> in the transformation of styrene oxide (SO) with CO<sub>2</sub> to styrene carbonate (SC) and carbonate oligomers (COL) due to combined effect of its textural properties and basicity. Under solvent-free system, COL from monomeric SC was directly obtained, up to 72.4 % yield, via <em>in situ</em> oligomerization. Optimization of the solvent-free reaction conditions was carried out to control the selective pathway of CO<sub>2</sub> utilization between cycloaddition and oligomerization. In the presence of acetonitrile, <em>a</em> > 97 % yield of SC was achieved over MIL-101(Cr)‒NH<sub>2</sub> under a mild reaction condition (120 °C and 20 bar of CO<sub>2</sub>). Reaction mechanisms for the cycloaddition and oligomerization of SO with CO<sub>2</sub> are also proposed to comprehend the role of MOF, amine group, and co-catalyst. The combined efficient CO<sub>2</sub> adsorption and capability to produce CC and COL makes the synthesized MOF promising materials for CO<sub>2</sub> capture and selective utilization.</p></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772656824000745/pdfft?md5=cfddabca0a6d086245424f4d35279d5d&pid=1-s2.0-S2772656824000745-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141961326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Synergistic CO2 capture using PANI-polymerized UiO-66 embedded in PEBAX mixed matrix membranes","authors":"","doi":"10.1016/j.ccst.2024.100260","DOIUrl":"10.1016/j.ccst.2024.100260","url":null,"abstract":"<div><p>In this study, mixed-matrix membranes (MMMs) were fabricated using a composite of UiO-66 and polyaniline (PANI) integrated into a polyether-block-amide (PEBAX) matrix. The successful synthesis of the UiO-66 and PANI@UiO-66 composites and their incorporation into the PEBAX matrix were validated through X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Fourier Transform Infrared (FTIR) Spectroscopy, Brunauer–Emmett–Teller (BET) analysis, and Thermogravimetric Analysis (TGA). Quantitative permeation tests revealed that the CO<sub>2</sub> permeability in UiO-66 based MMMs increased by 90 % at 30 % filler loading (from 82 to 156 Barrer), and by 45 % (from 82 to 119 Barrer) in PANI@UiO-66 based MMMs, alongside substantial improvements in selectivity. For UiO-66 membranes we observed a selectivity drop for both gas pairs (CO<sub>2</sub>/CH<sub>4</sub> and CO<sub>2</sub>/N<sub>2</sub>) that led to our motivation to modify the MOF. The CO<sub>2</sub>/CH<sub>4</sub> selectivity of the PANI@UiO-66 based MMMs enhanced from 22 to 29 (34%) and the CO<sub>2</sub>/N<sub>2</sub> selectivity from 48 to 57 (18%). Mixed-gas permeation tests further confirmed the efficacy of the membranes in real-world separation scenarios. The diffusivity and solubility results provide insights into the gas transport mechanisms, revealing the synergistic effects of filler incorporation on membrane performance. The integration of UiO-66 and PANI with PEBAX offers a promising pathway for developing efficient and effective gas separation technologies, aligning with the industrial requirements for environmental sustainability and energy efficiency.</p></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772656824000721/pdfft?md5=0d0aaa79acd3d6e99abd885924445334&pid=1-s2.0-S2772656824000721-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141961324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Potential of carbon dioxide spraying on the properties of 3D concrete printed structures","authors":"","doi":"10.1016/j.ccst.2024.100256","DOIUrl":"10.1016/j.ccst.2024.100256","url":null,"abstract":"<div><p>Achieving net carbon neutrality is a global goal toward mitigating climate change presumed consequences. The building and construction sector, responsible for approximately 40 % of greenhouse gas emissions, requires innovative zero-carbon technologies. This paper investigates the synergistic potential of combining 3D concrete printing (3DCP) and carbon capture and sequestration (CCS) to advance net carbon neutrality in construction. By implementing different CO2 spraying regimes, this study demonstrates improved carbon dioxide (CO<sub>2</sub>) uptake and the crystallinity of precipitated calcium carbonate (CaCO<sub>3</sub>). The findings indicate that the method's effectiveness heavily relies on appropriate printing parameters and curing conditions. Chamber-cured samples exhibit the highest CO<sub>2</sub> uptake but the lowest mechanical strength, while ambient-cured samples show the opposite trend. It is also important to note that the duration of CO<sub>2</sub> exposure in this study was relatively short, resulting in limitations in both CO<sub>2</sub> uptake and strength gain. Nevertheless, this study highlights the potential of synergistically combining 3DCP and CCS technologies for net carbon neutrality, emphasizing the critical role of the construction sector in achieving global emission reduction targets.</p></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S277265682400068X/pdfft?md5=b342776847b89624417110b17d1e92fa&pid=1-s2.0-S277265682400068X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141961325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"High temperature capture of CO2 on Li4SiO4 sorbents via a simple dry ball-milling coupled with K2CO3 physical addition","authors":"","doi":"10.1016/j.ccst.2024.100255","DOIUrl":"10.1016/j.ccst.2024.100255","url":null,"abstract":"<div><p>The reversible CO<sub>2</sub> absorption/desorption of lithium orthosilicate (Li<sub>4</sub>SiO<sub>4</sub>) sorbents holds potential for high temperature capture of CO<sub>2</sub> from hot flue gases, sorption-enhanced reforming and solar thermochemical energy storage. In this study, we have prepared a series of Li<sub>4</sub>SiO<sub>4</sub> sorbents using a combination of K<sub>2</sub>CO<sub>3</sub> addition and dry ball-milling procedure to improve the relatively slow kinetics under low CO<sub>2</sub> partial pressure conditions. The synergistic effects of dry ball-milling and K<sub>2</sub>CO<sub>3</sub> addition on the intrinsic properties of Li<sub>4</sub>SiO<sub>4</sub> sorbents were explored by thermogravimetric analysis and structural characterizations. Thermogravimetric analysis indicate that the highest CO<sub>2</sub> uptakes were achieved with dry ball-milling combined with K<sub>2</sub>CO<sub>3</sub> physical addition. The structural characterizations further reveal that this sorbent (P-3K-1.5 M) had the smallest crystallite/particle size, largest surface area, and highest availability of surface alkaline-sites. The kinetics analysis also demonstrates that P-3K-1.5 M exhibited the fastest sorption kinetics during a double process. Additionally, P-3K-1.5 M maintained a high capacity over 10 sorption/desorption cycles. Therefore, this synthesis technique, which is simple, cost-effective, and easily scalable, shows great promise for high-temperature CO<sub>2</sub> capture.</p></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772656824000678/pdfft?md5=adfef578d323d28b515a25799f8a22e8&pid=1-s2.0-S2772656824000678-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141961323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Biomimetic mineralization for carbon capture and sequestration","authors":"","doi":"10.1016/j.ccst.2024.100257","DOIUrl":"10.1016/j.ccst.2024.100257","url":null,"abstract":"<div><p>Carbon mineralization is an emerging field of research in carbon sequestration. In this process, dissolved inorganic carbon reacts with mineral cations such as Ca<sup>2+</sup> and Mg<sup>2+</sup> to form stable carbonate minerals, enabling permanent carbon sequestration and storage. However, current mineralization methods predominantly rely on physicochemical approaches to expedite the mineralization of carbon. While effective, these methods require substantial chemical and energy consumption and may cause significant environmental impacts. Biomineralization has recently emerged as a sustainable alternative, leveraging biochemical reactions to catalyze CO<sub>2</sub> mineralization. This research focuses on investigating the specific roles of various biomolecules in natural carbon biomineralization and exploring state-of-the-art biomimetic carbon mineralization techniques, including whole-cell microbially induced carbonate precipitation (MICP) and cell-free systems, for carbon sequestration. In addition, we discuss various sources of mineral cations, ranging from natural minerals to industrial waste to seawater, along with their advantages and limitations. Our findings highlight the potential and feasibility of biological carbon mineralization processes to contribute towards sustainable carbon sequestration. However, we also identify challenges and propose future directions to guide further research and the application of these processes.</p></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772656824000691/pdfft?md5=cc8fc313e000d6f4f57c39f83b68e346&pid=1-s2.0-S2772656824000691-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141954576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Preparation of high-value carbon nanotubes from real waste plastic towards the negative carbon technology","authors":"","doi":"10.1016/j.ccst.2024.100258","DOIUrl":"10.1016/j.ccst.2024.100258","url":null,"abstract":"<div><p>The preparation of carbon nanotubes (CNTs) from plastics is of great significance for realizing high value utilization of waste and reducing carbon emission. Here, several kinds of real waste plastics were introduced into catalytic pyrolysis, and the process was also optimized. The results showed that the presence of impurities (e.g., adhesive labels) reduced the initial activation energy of the pyrolysis reaction, and the pyrolysis process was extended and could be divided into two stages. During the catalytic process, impurities play a toxic role on the catalyst at higher temperatures and result in the agglomeration of catalyst particles and a decrease in catalytic activity. Less than 10 wt.% carbon fibers were collected from milk cup waste. However, after experimental optimization, the influence of the impurity component was greatly reduced. The toxic effect of organic impurity volatiles on a catalyst was avoided by employing a segmented catalytic pyrolysis process, which led to an increase in solid carbon content of more than 20 % for express package waste. Simultaneously, more uniform and smoother CNTs can be found in the obtained solid carbon. The process of preparing carbon nanotubes with higher yield and better quality is feasible and has important application prospects in the utilization of waste plastics.</p></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772656824000708/pdfft?md5=867fa535af562c03e8c1ef6245bb0211&pid=1-s2.0-S2772656824000708-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141953346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Enhancing plant photosynthesis with dual light conversion films incorporating biomass-derived carbon dots","authors":"","doi":"10.1016/j.ccst.2024.100253","DOIUrl":"10.1016/j.ccst.2024.100253","url":null,"abstract":"<div><p>Enhancing photosynthesis is a pivotal strategy for achieving sustainable plant production. Blue and red light facilitate plant growth since these wavelengths are readily absorbed by chlorophyll pigments and power crucial photosynthetic processes. In this investigation, double light conversion films were prepared by incorporating biomass-derived carbon dots into a polyvinyl alcohol matrix (CDs@PVAs). The study conclusively demonstrated that CDs@PVAs can convert ultraviolet and green light from sunlight into blue and red light. Using 2-week-old <em>Athaliana</em> plants as the model organism, the <em>Athaliana</em> plants were covered with CDs@PVAs and then exposed to simulated sunlight (0.57 mW cm<sup>−2</sup>) for 1 hour. The Fv/Fm value in the presence of the CDs@PVAs was approximately 12% higher than without the film, indicating a significant boost in photosynthesis. Analysis of gene expression showed that the CDs@PVAs cause significant upregulation of genes associated with photosynthesis. These double light conversion films thus emerge as promising contenders for eco-friendly plant cultivation methods that circumvent reliance on electric power. Their potential applications in agriculture are substantial, underscoring their significance in promoting sustainable practices.</p></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772656824000654/pdfft?md5=e879356f7616643a75bc51401f93a861&pid=1-s2.0-S2772656824000654-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141953347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Techno-economic assessment of supercritical, cold liquid, and dissolved CO2 injection into sub-seafloor basalt","authors":"","doi":"10.1016/j.ccst.2024.100236","DOIUrl":"10.1016/j.ccst.2024.100236","url":null,"abstract":"<div><p>Injecting CO<sub>2</sub> into subsea basalt can provide permanent storage via multiple trapping mechanisms, including mineralization reactions which convert the CO<sub>2</sub> into solid carbonates over time. Injecting CO<sub>2</sub> together with water can accelerate the process of mineralization, but presents additional challenges, such as high energy and water requirements. A techno-economic model of CO<sub>2</sub> transport and injection into ocean basalt was developed to compare injection strategies using pure supercritical CO<sub>2</sub>, pure liquid CO<sub>2</sub>, and CO<sub>2</sub> dissolved in seawater. The model was applied to a representative injection site off the coast of British Columbia, Canada. Injection of CO<sub>2</sub> dissolved into seawater was found to be more energy and cost intensive than injection of supercritical or liquid CO<sub>2</sub>; this is primarily due to the reduced quantities of CO<sub>2</sub> that can be injected into each well, and additional pumping energy required for the accompanying seawater. For the base assumptions, transport and storage costs for supercritical, liquid, and dissolved injection were estimated as $43/t, $38/t, and $250/t respectively. Their energy requirements were estimated as 93 kWh/t, 90 kWh/t, and 213 kWh/t respectively. The current best estimates of geological parameters for ocean basalt suggest good injectivity and very large storage capacities per well. This may help to compensate for the additional project expenses incurred by deep water, allowing cost-effective liquid and supercritical injection. However, this result is sensitive to high uncertainties in both geological parameters and component cost data.</p></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772656824000484/pdfft?md5=230133100a135e38caef398b3f8b1c26&pid=1-s2.0-S2772656824000484-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141960019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Electrochemical CO2 reduction to syngas on copper mesh electrode: Alloying strategy for tuning syngas composition","authors":"","doi":"10.1016/j.ccst.2024.100254","DOIUrl":"10.1016/j.ccst.2024.100254","url":null,"abstract":"<div><p>Electrochemical CO<sub>2</sub> reduction to synthetic fuels and commodity chemicals using renewable energy offers a promising approach to mitigate CO<sub>2</sub> emissions and alleviate energy crisis. Copper-based catalysts show potential for electrochemical CO<sub>2</sub> reduction applications, while they face the key challenges of high potential, sluggish kinetics, and poor selectivity. In this work, Cu-Zn, Cu-Co, Cu-Cd, and Cu-In bimetallic catalysts are synthesized via the electrodeposition method for electrochemical CO<sub>2</sub> reduction to syngas with adjustable CO/H<sub>2</sub> ratios. The bimetallic catalysts are characterized using various techniques to reveal their crystalline structures, morphologies, and elemental compositions. The structure-property-activity relationships of these catalysts are investigated to identify optimal candidates for electrochemical CO<sub>2</sub> reduction applications. The findings reveal that the bare Cu mesh catalyst exhibits poor CO<sub>2</sub> reduction activity, and the products are dominated by hydrogen evolution reaction (HER). The bimetallic catalysts exhibit improved CO<sub>2</sub> reduction performance, with the Cu-Zn and Cu-Cd catalysts showing excellent activity, and the CO/H<sub>2</sub> ratio in syngas can be tuned over a wide range by adjusting the applied potential. The Cu-Zn and Cu-Cd catalysts demonstrate outstanding performance with Faradic efficiencies of ∼90 % and ∼80 % towards syngas production with CO/H<sub>2</sub> ratios of ∼2.0 and ∼1.5 at −0.81 and −1.01 V vs. RHE, respectively, making the produced syngas suitable for various industrial applications. Stability tests over 450 min show that the Cu-Zn and Cu-Cd catalysts maintain stable catalytic activity, syngas selectivity and CO/H<sub>2</sub> ratio, making them robust candidates for syngas production. The results will provide valuable insights into the design of robust catalysts for electrochemical CO<sub>2</sub> reduction, offering a promising path toward sustainable syngas production.</p></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772656824000666/pdfft?md5=9aaf6aba0cf5c39e6a3a32ca54c7a5a8&pid=1-s2.0-S2772656824000666-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141736458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}