| 1. |
- Dziejarski, Bartosz, 1995, et al.
(författare)
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CO 2 capture materials: a review of current trends and future challenges
- 2023
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Ingår i: Materials Today Sustainability. - 2589-2347. ; 24
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Forskningsöversikt (refereegranskat)abstract
- Over the last decade, CO2 adsorption technology has quickly gained popularity and is now widely applied in global CCUS projects due to playing an important role in achieving net-zero emissions by 2050. As a result, novel materials, or post-modification methods of those already available have been successively reported to enhance the efficiency of CO2 capture from flue gases. This paper discusses a systematic understanding of fundamental aspects of current research trends in terms of developing selected solid CO2 adsorbent, with a particular emphasis on the upcoming challenges. The candidates are reviewed considering the practical drawbacks of imposed by industrial scale and economics, including carbon-based materials, metal-organic frameworks (MOFs), polymers, zeolites, silica, alumina, metal oxides, amine-based adsorbents, and other composite porous materials. Sustainable sorbents derived from biomass and industrial residues are also studied due to the high need for cost-effective raw materials and their crucial role in the circular economy. Lastly, a techno-economic analysis (TEA) is included to provide the most important criteria that should be considered when adsorbents are implemented on an industrial scale. Consequently, the review is summarized, and recommendations are offered for future research in the advancement of CO2 capture materials. The paper aims to establish a comprehensive theoretical basis of adsorption technologies currently progressed to reduce CO2 emissions, along with highlighting the identification and precise articulation of the most important future research paths that could be beneficial to address over the next years.
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| 2. |
- Fernández-Benito, A., et al.
(författare)
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Multifunctional metal-free rechargeable polymer composite nanoparticles boosted by CO2
- 2020
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Ingår i: Materials Today Sustainability. - : Elsevier BV. - 2589-2347. ; 10
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Tidskriftsartikel (refereegranskat)abstract
- Herein, we present a multigram scale-up route for the preparation of novel polymer composite nanoparticles as potential multifunctional rechargeable material for future, sustainable batteries. The nanoparticles (20 nm) comprise three innocuous yet functional interpenetrated macromolecular networks: polypyrrole, methylcellulose, and lignin. They are uniquely assembled in strands or chains (∌200 nm) such as necklace beads and show long-term stability as water dispersion. We find that an aqueous suspension of this hierarchical nanomaterial shows two sets of reversible redox peaks, separated by ∌600 mV, originating from the catechol moieties present in the lignin biopolymer. Remarkably, the addition of carbon dioxide increased the capacity of one of the redox processes by 500%. Importantly, the three redox stages occur in the presence of the same nanostructured polymer so being a potentially bifunctional material to be used in advanced electrochemical systems. The new properties are attributed to an intrinsic chemical and electronic coupling at the nanoscale among the different building blocks of the metal-free polymer composite and the structural rearrangement of the interpenetrated polymer network by the incorporation of CO2. We have provided both a new electrochemically multifunctional hierarchically structured material and a facile route that could lead to novel sustainable energy applications.
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| 3. |
- Halakarni, Mahaveer A., et al.
(författare)
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Forward osmosis process for energy materials recovery from industrial wastewater with simultaneous recovery of reusable water : a sustainable approach
- 2023
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Ingår i: Materials Today Sustainability. - : Elsevier BV. - 2589-2347. ; 22
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Tidskriftsartikel (refereegranskat)abstract
- In this study, a biopolymer-based forward osmosis (FO) membrane was used in combination with an easily recoverable and reusable draw solution (DS) for a simultaneous recovery of high-quality water and value-added products from industrial wastewater. Simultaneous wastewater dewatering resulted in a highly concentrated sludge that was reused as the electrode material. In this study, 86.92% dewatering was achieved using an easily recyclable mixture of ethylenediaminetetraacetic acid disodium (EDTA-2Na) with Triton X-100 micelles as the DS and a chitosan membrane with FO. The compatible membrane and the DS showed a flux of 5e6 L m-2 h-1 and a 0.008 +/- 0.002 mol m-2 h-1 reverse solute flux with a retention of >99.0% for all organic pollutants from the chosen real-world wastewater. The recovered DS after the third use showed a >83.57% and >78.84% constant flux retention for deionizedand tannery wastewater as feed. In long-term tests with simulated wastewaters containing various contaminants, they showed >99.0% retention of organics and modern foulants and long-term stability (96 h). At the end of the FO process, sludge with different concentrations of organic wastes was recovered. The recovered solid sludge was carbonized (800 0C) and used as the electrode material in a supercapacitor with a specific capacitance of 165 F/g at a current density of 0.5 A/g.
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| 4. |
- Junge, N. H., et al.
(författare)
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Phototriggering lignin peroxidase with nanocatalysts to convert veratryl alcohol to high-value chemical veratryl aldehyde
- 2018
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Ingår i: MATERIALS TODAY SUSTAINABILITY. - : Elsevier BV. - 2589-2347. ; 1-2, s. 28-31
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Tidskriftsartikel (refereegranskat)abstract
- Production of fine chemicals from biomass, in particular lignin fraction, is paramount to the development of a sustainable bioeconomy. Herein, a photosystem capable of generating H2O2 in situ from the photoreduction of O-2 is presented, which is subsequently used to activate lignin peroxidase enzyme. The active enzyme selectively converts veratryl alcohol into veratryl aldehyde, a high-value flavoring and fragrance compound. This unique reaction scheme increased significantly the process greenness and safety credentials. (C) 2018 Elsevier Ltd. All rights reserved.
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| 5. |
- Semeniuk, M., et al.
(författare)
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Design and fabrication of low-cost renewable carbon electrode materials and their thermo-kinetics for sustainable energy storage applications
- 2022
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Ingår i: Materials Today Sustainability. - : Elsevier. - 2589-2347. ; 20
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Tidskriftsartikel (refereegranskat)abstract
- To date, there have been few studies performed on the kinetics of thermal decomposition of renewable carbon and its use in energy storage devices. Novel renewable graphitic carbon from Acer saccharum, sugar maple (SM) heartwood, and Arachis hypogaea, peanut outer shell (PS), are used as anodes in lithium-ion coin cell batteries, with steady specific capacities of 180 mAh/g and 220 mAh/g, respectively, and both retain 100% columbic efficiency for over 350 cycles. Cyclic voltammetry reveals the different charge storage kinetic mechanisms of the two. The voltammogram of SM contains an oxidation peak indicating Li ion intercalation suitable for battery application, while PS lacks a peak; thus, showing potential for function as a supercapacitor. A kinetic study is undertaken on six carbon sources to improve the understanding of the thermal degradation process leading to renewable graphitic carbon. Consistent results are shown across the various model-free methods, indicating that they can accurately describe the devolatilization process. The renewable graphitic carbons morphological features were studied by SEM, XRD, Raman and nitrogen adsorption isotherms. As SM and PS compare favorably to the electrodes they replace, renewable graphitic carbon has the potential for use in a wide variety of novel applications, such as organic thin film transistors, fuel cells, organic batteries, supercapacitors, and other bioelectronics.
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| 6. |
- Sun, W., et al.
(författare)
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A "win-win" photocatalysis : coupling hydrogen production with the synthesis of high value-added organic chemicals
- 2023
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Ingår i: Materials Today Sustainability. - : Elsevier. - 2589-2347. ; 23:100465
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Tidskriftsartikel (refereegranskat)abstract
- Photocatalytic hydrogen (H2) production and selective organic synthesis provide an environmentally friendly strategy to generate solar fuel and high-value organic products, respectively. However, these reactions usually either suffer from low reaction kinetics or need the aid of sacrificial reagents as electron donors or acceptors, thus lacking in economic benefit. Is there any synergetic effect between these two types of reactions? Recently, combining H2 evolution with selective organic synthesis in one photo-catalytic system has been reported. In these dual-functional photocatalytic reactions, both photoexcited electrons and holes can be utilized to produce target products, making the overall process more efficient. In this minireview, we begin with a concise discussion of the fundamental principles of simultaneous photocatalytic H2 production and organic synthesis using semiconductor-based photocatalysts. Emphasis is placed on emerging materials or novel strategies selected in this dual-functional photo-redox reaction system, including the characteristics of photocatalysts and/or potential reaction mechanisms. Finally, remaining challenges and personal perspectives on future development in this field are put forward. It is expected that this review will provide inspirational guidance on the rational design of photocatalysts with dual-functional reaction capability, invigorating the development of economical and efficient H2 generation and/or value-added organic synthesis.& COPY; 2023 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
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| 7. |
- Zhong, Haiyi, et al.
(författare)
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Gas storage in geological formations : A comparative review on carbon dioxide and hydrogen storage
- 2024
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Ingår i: Materials Today Sustainability. - : Elsevier BV. - 2589-2347. ; 26
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Tidskriftsartikel (refereegranskat)abstract
- Carbon dioxide and hydrogen storage in geological formations at Gt scale are two promising strategies toward net-zero carbon emissions. To date, investigations into underground hydrogen storage (UHS) remain relatively limited in comparison to the more established knowledge body of underground carbon dioxide storage (UCS). Despite their analogous physical processes can be used for accelerating the advancements in UHS technology, the existing distinctions possibly may hinder direct applicability. This review therefore contributes to advancing our fundamental understanding on the key differences between UCS and UHS through multi-scale comparisons. These comparisons encompass key factors influencing underground gas storage, including storage media, trapping mechanisms, respective fluid properties, petrophysical properties, and injection scenarios. They provide guidance for the conversion of our existing knowledge from UCS to UHS, emphasizing the necessity of incorporating these factors relevant to their trapping and loss mechanisms. The article also outlines future directions to address the crucial knowledge gaps identified, aiming to enhance the utilisation of geological formations for hydrogen and carbon dioxide storage.
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