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Publications (10 of 652) Show all publications
Zhou, S., Apostolopoulou-Kalkavoura, V., Tavares da Costa, M. V., Bergström, L., Strömme, M. & Xu, C. (2020). Elastic Aerogels of Cellulose Nanofibers@Metal–Organic Frameworks for Thermal Insulation and Fire Retardancy. Nano-Micro Letters, 12(9), Article ID 9.
Open this publication in new window or tab >>Elastic Aerogels of Cellulose Nanofibers@Metal–Organic Frameworks for Thermal Insulation and Fire Retardancy
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2020 (English)In: Nano-Micro Letters, ISSN 2150-5551, Vol. 12, no 9, article id 9Article in journal (Refereed) Published
Abstract [en]

Metal–organic frameworks (MOFs) with high microporosity and relatively high thermal stability are potential thermal insulation and flame-retardant materials. However, the difficulties in processing and shaping MOFs have largely hampered their applications in these areas. This study outlines the fabrication of hybrid CNF@MOF aerogels by a stepwise assembly approach involving the coating and cross-linking of cellulose nanofibers (CNFs) with continuous nanolayers of MOFs. The cross-linking gives the aerogels high mechanical strength but superelasticity (80% maximum recoverable strain, high specific compression modulus of ~ 200 MPa cm3 g−1, and specific stress of ~ 100 MPa cm3 g−1).The resultant lightweight aerogels have a cellular network structure and hierarchical porosity, which render the aerogels with relatively low thermal conductivity of ~ 40 mW m−1 K−1. The hydrophobic, thermally stable MOF nanolayers wrapped around the CNFs result in good moisture resistance and fire retardancy. This study demonstrates that MOFs can be used as efficient thermal insulation and flame-retardant materials. It presents a pathway for the design of thermally insulating, superelastic fire-retardant nanocomposites based on MOFs and nanocellulose.

Keywords
Metal-organic frameworks, Nanocellulose, Superelastic aerogel, Thermal insulation, Fire retardancy
National Category
Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
urn:nbn:se:uu:diva-400386 (URN)10.1007/s40820-019-0343-4 (DOI)000510847500009 ()
Funder
ÅForsk (Ångpanneföreningen's Foundation for Research and Development), 19-493
Available from: 2019-12-20 Created: 2019-12-20 Last updated: 2020-03-20Bibliographically approved
Xu, C., Yu, G., Yuan, J., Strömme, M. & Hedin, N. (2020). Microporous organic polymers as CO2adsorbents: advances and challenges. Materials Today Advances, 6, Article ID 100052.
Open this publication in new window or tab >>Microporous organic polymers as CO2adsorbents: advances and challenges
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2020 (English)In: Materials Today Advances, ISSN 2590-0498, Vol. 6, article id 100052Article in journal (Refereed) Epub ahead of print
Abstract [en]

Microporous organic polymers (MOPs) with internal pores less than 2 nm have potential use in gas separation, sensing, and storage, in the form of membranes, monoliths, fibers, or adsorbent granules. These covalently bonded polymers are being formed by reacting with rigid organic monomers, and MOPs have lately been studied for capturing CO2 from gas mixtures in the form of membranes and adsorbents. Especially, the potential of MOPs in the processes of carbon capture and storage has been in the focus and small pore MOPs are preferred for regular separation processes but larger pores could be suitable if cryogenic processes would be used. Recent studies (2014 – mid 2019) on the potential use of MOPs as CO2 adsorbents and, to some degree, CO2-selective membranes are reviewed.

Keywords
Microporous polymers, Ionic microporous polymers, CO2 capture, Adsorption, Heat of sorption
National Category
Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
urn:nbn:se:uu:diva-402201 (URN)10.1016/j.mtadv.2019.100052 (DOI)
Funder
ÅForsk (Ångpanneföreningen's Foundation for Research and Development), 19-493
Available from: 2020-01-12 Created: 2020-01-12 Last updated: 2020-01-20Bibliographically approved
Yang, J., Chen, S., Luo, J., Persson, C., Cölfen, H., Welch, K. & Strömme, M. (2020). Multifunctional Polymer-Free Mineral Plastic Adhesives Formed by Multiple Noncovalent Bonds. ACS Applied Materials and Interfaces, 12(6), 7403-7410
Open this publication in new window or tab >>Multifunctional Polymer-Free Mineral Plastic Adhesives Formed by Multiple Noncovalent Bonds
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2020 (English)In: ACS Applied Materials and Interfaces, ISSN 1944-8244, E-ISSN 1944-8252, Vol. 12, no 6, p. 7403-7410Article in journal (Refereed) Published
Abstract [en]

Supramolecular adhesives have attracted a great deal of attention in recent years, resulting in their development for different applications. However, creating supramolecular adhesives with reversible and reusable properties is still a challenge. Here, a synthesis route to obtain supramolecular adhesives is presented in which no polymeric compounds are involved in the preparation. The adhesive is formed by intermolecular coulomb forces between amorphous magnesium carbonate nanoparticles and the low-molecular-weight drug ibuprofen, which results in an amorphous composite material that is transparent, shapeable, stretchable, and self-healing, making it reusable. It is demonstrated that this hybrid material provides a simple means of gluing a wide variety of materials, including metals, glass, paper, and plastics, and that is reversible and possesses reusability. The material disrupts the traditional concept of polymer-based adhesives and may be used as a sustainable mineral plastic in applications such as 3D printing.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2020
Keywords
ibuprofen, magnesium carbonate nanoparticles, mineral plastic, polymer-free adhesive, supramolecular materials
National Category
Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
urn:nbn:se:uu:diva-403590 (URN)10.1021/acsami.9b17253 (DOI)000514256400062 ()31958949 (PubMedID)
Funder
Swedish Research Council
Available from: 2020-01-31 Created: 2020-01-31 Last updated: 2020-03-26Bibliographically approved
Sun, R., Tai, C.-W., Strømme, M. & Cheung, O. (2020). The Effects of Additives on the Porosity and Stability of Amorphous Calcium Carbonate. Microporous and Mesoporous Materials, 292, Article ID 109736.
Open this publication in new window or tab >>The Effects of Additives on the Porosity and Stability of Amorphous Calcium Carbonate
2020 (English)In: Microporous and Mesoporous Materials, ISSN 1387-1811, E-ISSN 1873-3093, Vol. 292, article id 109736Article in journal (Refereed) Published
Abstract [en]

Amorphous calcium carbonate (ACC) stabilized by various carboxylic additives was synthesized by incorporating the additives into an ACC suspension in methanol. The additives studied included polyacrylic acid, citric acid, adipic acid, 6-aminocaproic acid, 4-aminobutyric acid and hexanoic acid. The stabilized ACC samples (ACC-additives) exhibited similar characteristics to ACC alone. They appeared X-ray amorphous, contained characteristic infrared bands and had the same nanoparticle aggregated microstructure as ACC. The porosity of the ACC-additives was, however, markedly improved, with Brunauer-Emmett-Teller (BET) surface areas of up to ~640 m2/g. The BET surface area of ACC-citric acid was close to double that of a highly porous ACC sample. The structure and amount of the additive had a noticeable effect on the porosity of the ACC-additives. When the additive was adsorbed onto the surface of the ACC nanoparticles, their growth was restricted. The restricted growth reduced the size of the ACC nanoparticles, which increased the BET surface area of ACC. Finally, the long-term stability study revealed that the stability of all the ACC-additives was markedly enhanced when stored in ambient or semi-airtight conditions (in a closed falcon tube). In particular, ACC stabilized with adipic acid (ACC-AA-267) had excellent stability, remaining in an amorphous phase for more than one year under ambient conditions and retaining ~87% porosity for 48 weeks under semi-airtight conditions. The extremely high porosity and excellent long-term stability make these ACC-additives promising candidates for applications where porosity and stability are critical, such as those involving adsorption, bone regeneration or drug delivery.

Keywords
Amorphous calcium carbonate, Additives, Porosity, Stability
National Category
Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
urn:nbn:se:uu:diva-391170 (URN)10.1016/j.micromeso.2019.109736 (DOI)000498292200020 ()
Funder
Swedish Research Council, 2014-3929Swedish Research Council Formas, 2018-00651ÅForsk (Ångpanneföreningen's Foundation for Research and Development), 19-549Knut and Alice Wallenberg Foundation
Available from: 2019-08-20 Created: 2019-08-20 Last updated: 2019-12-18Bibliographically approved
Vall, M., Strömme, M. & Cheung, O. (2019). Amine-Modified Mesoporous Magnesium Carbonate as an Effective Adsorbent for Azo Dyes. ACS Omega, 4, 2973-2979
Open this publication in new window or tab >>Amine-Modified Mesoporous Magnesium Carbonate as an Effective Adsorbent for Azo Dyes
2019 (English)In: ACS Omega, Vol. 4, p. 2973-2979Article in journal (Refereed) Published
Abstract [en]

Mesoporous magnesium carbonate (MMC) was evaluated as a potential candidate material for removal of dyes from textile industry wastewater. The adsorption property of MMC was analyzed for three different azo dyes: reactive black 5 (RB5), amaranth (AM), and acid red 183 (AR183). Further, the effect of porosity, amine modification, ionic strength, and pH was evaluated. MMC modified with 3-(aminopropyl)triethoxysilane (aMMC) showed consistently high uptake levels for all of the azo dyes tested; the uptake of RB5, AM, and AR183 was ∼360, ∼143 and ∼170 mg/g, respectively. The results demonstrated the importance of porosity and surface chemistry in the effective adsorption of the azo dye in aqueous systems. The uptake of RB5 and AM on aMMC was not significantly affected by pH (when varied between 4 and 10), although reduced uptake of RB5 and AM was observed at pH values <2 and >12. The addition of NaCl salt at concentrations up to 1000 mM had minimal effect on the high uptake of RB5 on aMMC. The uptake of AM by aMMC was reduced by approximately 20% in the presence of NaCl even at low concentrations. The uptake of AR183 by aMMC varied noticeably by changes in pH and no specific trend was observed. The presence of NaCl also adversely affected the uptake of AR183 on aMMC. The adsorption of the azo dye on aMMC was most likely driven by electrostatic interactions. We show here that aMMC is a potential candidate adsorbent for the effective removal of azo dyes from textile wastewaters.

National Category
Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
urn:nbn:se:uu:diva-380594 (URN)10.1021/acsomega.8b03493 (DOI)
Available from: 2019-03-29 Created: 2019-03-29 Last updated: 2019-04-10Bibliographically approved
Åhlén, M., Cheung, O. & Strömme, M. (2019). Amorphous Mesoporous Magnesium Carbonate as a Functional Support for UV-Blocking Semiconductor Nanoparticles for Cosmetic Applications. ACS Omega, 4(2), 4429-4436
Open this publication in new window or tab >>Amorphous Mesoporous Magnesium Carbonate as a Functional Support for UV-Blocking Semiconductor Nanoparticles for Cosmetic Applications
2019 (English)In: ACS Omega, ISSN 2470-1343, Vol. 4, no 2, p. 4429-4436Article in journal (Refereed) Published
Abstract [en]

Highly porous amorphous mesoporous magnesium carbonate (MMC) with a Brunauer–Emmett–Teller (BET) surface area over 600 m2·g–1 was evaluated as a micrometer-sized support for TiO2 and ZnO semiconductor nanoparticles. The resulting MMC-TiO2-ZnO contained 25 wt % TiO2 and 25 wt % ZnO incorporated into an MMC structure without blocking the pores as revealed by nitrogen sorption isotherms, scanning electron microscopy, and transmission electron microscopy. In vitro ultraviolet (UV) light-blocking experiments showed that the MMC-TiO2-ZnO had comparable UV-blocking ability as a TiO2 and ZnO nanoparticle mixture containing the same amount of semiconductor particles without a support. Amaranth dye degradation studies revealed that MMC was able to diminish the catalytic activity of TiO2 and ZnO nanoparticles, possibly due to the presence of free carbonate ions in MMC as well as in the dye solution. In summary, this paper demonstrated for the first time that micrometer-sized particles of the recently emerged MMC materials can be used as a support for sun-blocking semiconductor nanoparticles without compromising their UV blocking ability and with significantly lowered photocatalytic activity. When used in a formulation as a support for semiconductor nanoparticles, MMC may also reduce the risk of nanoparticle exposure, and the high porosity of MMC-TiO2-ZnO may be utilized for the delivery of therapeutic agents to the skin.

National Category
Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
urn:nbn:se:uu:diva-379180 (URN)10.1021/acsomega.8b03498 (DOI)000460237300215 ()
Funder
Swedish Research Council, 2014-3929
Available from: 2019-03-13 Created: 2019-03-13 Last updated: 2019-03-25Bibliographically approved
Strömme, M. (2019). Be ready for new opportunities! Nanotechnology will totally change our society, industry and lives. In: Enfo (Ed.), Integration Days 2019: . Paper presented at Integration Days 31/1-1/2 2019, Lindholmen Conference Centre GOTHENBURG, SWEDEN. Göteborg
Open this publication in new window or tab >>Be ready for new opportunities! Nanotechnology will totally change our society, industry and lives
2019 (English)In: Integration Days 2019 / [ed] Enfo, Göteborg, 2019Conference paper, Oral presentation with published abstract (Other academic)
Place, publisher, year, edition, pages
Göteborg: , 2019
National Category
Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
urn:nbn:se:uu:diva-375517 (URN)
Conference
Integration Days 31/1-1/2 2019, Lindholmen Conference Centre GOTHENBURG, SWEDEN
Available from: 2019-01-30 Created: 2019-01-30 Last updated: 2019-05-09Bibliographically approved
Vall, M., Hultberg, J., Strömme, M. & Cheung, O. (2019). Carbon dioxide adsorption on mesoporous magnesium carbonate. Paper presented at 10th International Conference on Applied Energy (ICAE), Hong Kong, August 22-25, 2018. Energy Procedia, 158, 4671-4676
Open this publication in new window or tab >>Carbon dioxide adsorption on mesoporous magnesium carbonate
2019 (English)In: Energy Procedia, ISSN 1876-6102, E-ISSN 1876-6102, Vol. 158, p. 4671-4676Article in journal (Refereed) Published
Abstract [en]

Mesoporous magnesium carbonate (MMC) was synthesized and tested for its ability to separate CO2 from N2. The pure gas CO2 uptake of MMC was around 1.5 mmol/g at 101 kPa, 0 °C. The N2 uptake under the same conditions was less than 0.1 mmol/g. Al(NO3)3, Al2O3, K2CO3 and KNO3 were introduced into the porous structure of MMC as additives. All of the additives tested increased the CO2 uptake of MMC and increased its selectivity towards CO2. The incorporation of 5 wt.% K2CO3 increased the CO2 uptake of MMC up to over 3.2 mmol/g. The ideally adsorbed solution theory was used to calculate the CO2 selectivity of MMC and MMC with additives for a hypothetical gas mixture that contained 15% CO2: 85% N2. The CO2 selectivity at 101 kPa (0 °C) was around 60. MMC with 5 wt.% K2CO3 had a CO2 selectivity of over 150 under the same conditions. Vacuum swing cyclic CO2 adsorption/desorption showed that the CO2 uptake on MMC with 5 wt.% K2CO3 decreased after each cycle. Heat regeneration (up to 250 °C, for 10 minutes) could recover most of the lost CO2 capacity after each cycle. Heat regeneration indicatively improved the cyclic performance of this adsorbent. MMC with 5 wt.% K2CO3 was the best performing adsorbent in this study and can potentially be further developed into a good CO2 adsorbent for temperature swing adsorption (TSA) processes.

Place, publisher, year, edition, pages
Elsevier, 2019
Keywords
Carbon Capture, Storage, Gas separation, Adsorbent, Magnesium carbonate
National Category
Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
urn:nbn:se:uu:diva-379696 (URN)10.1016/j.egypro.2019.01.738 (DOI)000471031705006 ()
Conference
10th International Conference on Applied Energy (ICAE), Hong Kong, August 22-25, 2018
Note

Part of special issue: Innovative Solutions for Energy Transitions

Available from: 2019-03-19 Created: 2019-03-19 Last updated: 2019-08-05Bibliographically approved
Sepehri, S., Agnarsson, B., Zardán Gómez de la Torre, T., Schneiderman, J. F., Blomgren, J., Jesorka, A., . . . Kalaboukhov, A. (2019). Characterization of Binding of Magnetic Nanoparticles to Rolling Circle Amplification Products by Turn-On Magnetic Assay. Biosensors, 9(3), Article ID 109.
Open this publication in new window or tab >>Characterization of Binding of Magnetic Nanoparticles to Rolling Circle Amplification Products by Turn-On Magnetic Assay
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2019 (English)In: Biosensors, ISSN 2079-6374, Vol. 9, no 3, article id 109Article in journal (Refereed) Published
Abstract [en]

The specific binding of oligonucleotide-tagged 100 nm magnetic nanoparticles (MNPs) to rolling circle products (RCPs) is investigated using our newly developed differential homogenous magnetic assay (DHMA). The DHMA measures ac magnetic susceptibility from a test and a control samples simultaneously and eliminates magnetic background signal. Therefore, the DHMA can reveal details of binding kinetics of magnetic nanoparticles at very low concentrations of RCPs. From the analysis of the imaginary part of the DHMA signal, we find that smaller MNPs in the particle ensemble bind first to the RCPs. When the RCP concentration increases, we observe the formation of agglomerates, which leads to lower number of MNPs per RCP at higher concentrations of RCPs. The results thus indicate that a full frequency range of ac susceptibility observation is necessary to detect low concentrations of target RCPs and a long amplification time is not required as it does not significantly increase the number of MNPs per RCP. The findings are critical for understanding the underlying microscopic binding process for improving the assay performance. They furthermore suggest DHMA is a powerful technique for dynamically characterizing the binding interactions between MNPs and biomolecules in fluid volumes.

Keywords
magnetic nanoparticle, bioassay, differential homogenous magnetic assay, immobilization, binding kinetics, rolling circle amplification product
National Category
Nano Technology Pharmacology and Toxicology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
urn:nbn:se:uu:diva-393235 (URN)10.3390/bios9030109 (DOI)000487949000022 ()31533330 (PubMedID)
Funder
Swedish Research Council, 2015-03640Swedish Foundation for Strategic Research , SBE13-0125Knut and Alice Wallenberg Foundation
Available from: 2019-09-17 Created: 2019-09-17 Last updated: 2019-10-30Bibliographically approved
Oka, K., Strietzel, C., Emanuelsson, R., Nishide, H., Oyaizu, K., Strömme, M. & Sjödin, M. (2019). Characterization of PEDOT-Quinone conducting redox polymers in water-in-salt electrolytes for safe and high-energy Li-ion batteries. Electrochemistry communications, 105, Article ID 106489.
Open this publication in new window or tab >>Characterization of PEDOT-Quinone conducting redox polymers in water-in-salt electrolytes for safe and high-energy Li-ion batteries
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2019 (English)In: Electrochemistry communications, ISSN 1388-2481, E-ISSN 1873-1902, Vol. 105, article id 106489Article in journal (Refereed) Published
Abstract [en]

Li-ion batteries (LIBs) raise safety and environmental concerns, which mostly arise from their toxic and flammable electrolytes and the extraction of limited material resources by mining. Recently, water-in-salt electrolytes (WiSEs), in which a large amount of lithium salt is dissolved in water, have been proposed to allow for assembling safe and high-voltage (>3.0 V) aqueous LIBs. In addition, organic materials derived from abundant building blocks and their tunable properties could provide safe and sustainable replacements for inorganic cathode materials. In the current work, the electrochemical properties of a conducting redox polymer based on poly(3,4-ethylenedioxythiophene) (PEDOT) with hydroquinone (HQ) pendant groups have been characterized in WiSEs. The quinone redox reaction occurs within the potential region where the polymer is conducting, and fast redox conversion that involves lithium cycling during pendant group redox conversion was observed. These properties make conducting redox polymers promising candidates as cathode-active materials for safe and high-energy aqueous LIBs. An organic-based aqueous LIB, with a HQ-PEDOT as a cathode, Li4Ti5O12 (LTO) as an anode, and ca. 15 m lithium bis(trifluoromethanesulfonyl)imide water/dimethyl carbonate (DMC) as electrolyte, yielded an output voltage of 1.35 V and high rate capabilities up to 500C.

Place, publisher, year, edition, pages
Elsevier, 2019
Keywords
Conducting redox polymer, Organic electronics, Renewable energy storage, Lithium ion battery, Water-in-salt electrolyte, Quinone
National Category
Nano Technology Materials Chemistry
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
urn:nbn:se:uu:diva-389513 (URN)10.1016/j.elecom.2019.106489 (DOI)000484833800003 ()
Funder
Carl Tryggers foundation Swedish Research CouncilSwedish Research Council FormasSweGRIDS - Swedish Centre for Smart Grids and Energy Storage
Available from: 2019-07-16 Created: 2019-07-16 Last updated: 2019-10-17Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-5496-9664

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