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Wu Z, Vagin M, Boyd R, Ding P, Pshyk O, Greczynski G, Odén M, Björk EM. Selectivity Control of Oxygen Reduction Reaction over Mesoporous Transition Metal Oxide Catalysts for Electrified Purification Technologies. ACS Appl Mater Interfaces 2023. [PMID: 37204834 DOI: 10.1021/acsami.3c01196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Direct electrification of oxygen-associated reactions contributes to large-scale electrical storage and the launch of the green hydrogen economy. The design of the involved catalysts can mitigate the electrical energy losses and improve the control of the reaction products. We evaluate the effect of the interface composition of electrocatalysts on the efficiency and productivity of the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), both mechanistically and at device levels. The ORR and OER were benchmarked on mesoporous nickel(II) oxide and nickel cobaltite (NiO and NiCo2O4, respectively) obtained by a facile template-free hydrothermal synthesis. Physicochemical characterization showed that both NiO and NiCo2O4 are mesoporous and have a cubic crystal structure with abundant surface hydroxyl species. NiCo2O4 showed higher electrocatalytic activity in OER and selectivity to water as the terminal product of ORR. On the contrary, ORR over NiO yielded hydroxyl radicals as products of a Fenton-like reaction of H2O2. The product selectivity in ORR was used to construct two electrolyzers for electrified purification of oxygen and generation of hydroxyl radicals.
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Affiliation(s)
- Zhixing Wu
- Nanostructured Materials, Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping SE 58183, Sweden
| | - Mikhail Vagin
- Laboratory of Organic Electronics, Department of Science and Technology (ITN), Linköping University, Norrköping SE 60174, Sweden
| | - Robert Boyd
- Nanostructured Materials, Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping SE 58183, Sweden
| | - Penghui Ding
- Laboratory of Organic Electronics, Department of Science and Technology (ITN), Linköping University, Norrköping SE 60174, Sweden
| | - Oleksandr Pshyk
- Thin Film Physics, Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping SE 58183, Sweden
| | - Grzegorz Greczynski
- Thin Film Physics, Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping SE 58183, Sweden
| | - Magnus Odén
- Nanostructured Materials, Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping SE 58183, Sweden
| | - Emma M Björk
- Nanostructured Materials, Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping SE 58183, Sweden
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2
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Eskilson O, Zattarin E, Berglund L, Oksman K, Hanna K, Rakar J, Sivlér P, Skog M, Rinklake I, Shamasha R, Sotra Z, Starkenberg A, Odén M, Wiman E, Khalaf H, Bengtsson T, Junker JP, Selegård R, Björk EM, Aili D. Nanocellulose composite wound dressings for real-time pH wound monitoring. Mater Today Bio 2023; 19:100574. [PMID: 36852226 PMCID: PMC9958357 DOI: 10.1016/j.mtbio.2023.100574] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/30/2023] [Accepted: 02/01/2023] [Indexed: 02/08/2023] Open
Abstract
The skin is the largest organ of the human body. Wounds disrupt the functions of the skin and can have catastrophic consequences for an individual resulting in significant morbidity and mortality. Wound infections are common and can substantially delay healing and can result in non-healing wounds and sepsis. Early diagnosis and treatment of infection reduce risk of complications and support wound healing. Methods for monitoring of wound pH can facilitate early detection of infection. Here we show a novel strategy for integrating pH sensing capabilities in state-of-the-art hydrogel-based wound dressings fabricated from bacterial nanocellulose (BC). A high surface area material was developed by self-assembly of mesoporous silica nanoparticles (MSNs) in BC. By encapsulating a pH-responsive dye in the MSNs, wound dressings for continuous pH sensing with spatiotemporal resolution were developed. The pH responsive BC-based nanocomposites demonstrated excellent wound dressing properties, with respect to conformability, mechanical properties, and water vapor transmission rate. In addition to facilitating rapid colorimetric assessment of wound pH, this strategy for generating functional BC-MSN nanocomposites can be further be adapted for encapsulation and release of bioactive compounds for treatment of hard-to-heal wounds, enabling development of novel wound care materials.
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Affiliation(s)
- Olof Eskilson
- Laboratory of Molecular Materials, Division of Biophysics and Bioengineering, Department of Physics, Chemistry and Biology, Linköping University, SE-581 83, Linköping, Sweden
| | - Elisa Zattarin
- Laboratory of Molecular Materials, Division of Biophysics and Bioengineering, Department of Physics, Chemistry and Biology, Linköping University, SE-581 83, Linköping, Sweden
| | - Linn Berglund
- Division of Materials Science, Department of Engineering Sciences and Mathematics, Luleå University of Technology, SE-971 87, Luleå, Sweden
| | - Kristiina Oksman
- Division of Materials Science, Department of Engineering Sciences and Mathematics, Luleå University of Technology, SE-971 87, Luleå, Sweden
| | - Kristina Hanna
- Center for Disaster Medicine and Traumatology, Department of Biomedical and Clinical Sciences, Linköping University, SE-581 85, Linköping, Sweden
| | - Jonathan Rakar
- Center for Disaster Medicine and Traumatology, Department of Biomedical and Clinical Sciences, Linköping University, SE-581 85, Linköping, Sweden
| | - Petter Sivlér
- Laboratory of Molecular Materials, Division of Biophysics and Bioengineering, Department of Physics, Chemistry and Biology, Linköping University, SE-581 83, Linköping, Sweden
| | - Mårten Skog
- Laboratory of Molecular Materials, Division of Biophysics and Bioengineering, Department of Physics, Chemistry and Biology, Linköping University, SE-581 83, Linköping, Sweden
| | - Ivana Rinklake
- Center for Disaster Medicine and Traumatology, Department of Biomedical and Clinical Sciences, Linköping University, SE-581 85, Linköping, Sweden
| | - Rozalin Shamasha
- Center for Disaster Medicine and Traumatology, Department of Biomedical and Clinical Sciences, Linköping University, SE-581 85, Linköping, Sweden
| | - Zeljana Sotra
- Center for Disaster Medicine and Traumatology, Department of Biomedical and Clinical Sciences, Linköping University, SE-581 85, Linköping, Sweden
| | - Annika Starkenberg
- Center for Disaster Medicine and Traumatology, Department of Biomedical and Clinical Sciences, Linköping University, SE-581 85, Linköping, Sweden
| | - Magnus Odén
- Division of Nanostructured Materials, Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-58183, Linköping, Sweden
| | - Emanuel Wiman
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University, SE-70362, Örebro, Sweden
| | - Hazem Khalaf
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University, SE-70362, Örebro, Sweden
| | - Torbjörn Bengtsson
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University, SE-70362, Örebro, Sweden
| | - Johan P.E. Junker
- Center for Disaster Medicine and Traumatology, Department of Biomedical and Clinical Sciences, Linköping University, SE-581 85, Linköping, Sweden
| | - Robert Selegård
- Laboratory of Molecular Materials, Division of Biophysics and Bioengineering, Department of Physics, Chemistry and Biology, Linköping University, SE-581 83, Linköping, Sweden
| | - Emma M. Björk
- Division of Nanostructured Materials, Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-58183, Linköping, Sweden
| | - Daniel Aili
- Laboratory of Molecular Materials, Division of Biophysics and Bioengineering, Department of Physics, Chemistry and Biology, Linköping University, SE-581 83, Linköping, Sweden,Corresponding author.
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3
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Wu PH, Mäkie P, Odén M, Björk EM. Growth and Functionalization of Particle-Based Mesoporous Silica Films and Their Usage in Catalysis. Nanomaterials (Basel) 2019; 9:E562. [PMID: 30959939 PMCID: PMC6523614 DOI: 10.3390/nano9040562] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 03/29/2019] [Accepted: 04/02/2019] [Indexed: 11/16/2022]
Abstract
We report the formation of mesoporous films consisting of SBA-15 particles grown directly onto substrates and their usage as catalysts in esterification of acetic acid and ethanol. The film thickness was altered between 80 nm and 750 nm by adding NH₄F to the synthesis solution. The salt also affects the formation rate of the particles, and substrates must be added during the formation of the siliceous network in the solution. Various substrate functionalizations were tested and hydrophobic substrates are required for a successful film growth. We show that large surfaces (> 75 cm²), as well as 3D substrates, can be homogenously coated. Further, the films were functionalized, either with acetic acid through co-condensation, or by coating the films with a thin carbon layer through exposure to furfuryl alcohol fumes followed by carbonization and sulfonation with H₂SO₄. The carbon-coated film was shown to be an efficient catalyst in the esterification reaction with acetic acid and ethanol. Due to the short, accessible mesopores, chemical variability, and possibility to homogenously cover large, rough surfaces. the films have a large potential for usage in various applications such as catalysis, sensing, and drug delivery.
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Affiliation(s)
- Pei-Hsuan Wu
- Nanostructured Materials, Department of Physics, Chemistry and Biology (IFM), Linköping University, 581 83 Linköping, Sweden.
| | - Peter Mäkie
- Nanostructured Materials, Department of Physics, Chemistry and Biology (IFM), Linköping University, 581 83 Linköping, Sweden.
| | - Magnus Odén
- Nanostructured Materials, Department of Physics, Chemistry and Biology (IFM), Linköping University, 581 83 Linköping, Sweden.
| | - Emma M Björk
- Nanostructured Materials, Department of Physics, Chemistry and Biology (IFM), Linköping University, 581 83 Linköping, Sweden.
- Institute of Inorganic Chemistry II, University of Ulm, Albert-Einstein-Allee 11, 890 81 Ulm, Germany.
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Björk EM, Mäkie P, Rogström L, Atakan A, Schell N, Odén M. Formation of block-copolymer-templated mesoporous silica. J Colloid Interface Sci 2018; 521:183-189. [DOI: 10.1016/j.jcis.2018.03.032] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 03/09/2018] [Accepted: 03/12/2018] [Indexed: 12/18/2022]
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Abstract
The thermal expansion coefficient of technologically relevant multicomponent cubic nitride alloys are predicted using the Debye model with ab initio elastic constants calculated at 0 K and an isotropic approximation for the Grüneisen parameter. Our method is benchmarked against measured thermal expansion of TiN and Ti(1-x)Al x N as well as against results of molecular dynamics simulations. We show that the thermal expansion coefficients of Ti(1-x-y)X y Al x N (X = Zr, Hf, Nb, V, Ta) solid solutions monotonously increase with the amount of alloying element X at all temperatures except for Zr and Hf, for which they instead decrease for [Formula: see text].
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Affiliation(s)
- Ferenc Tasnádi
- Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-581 83 Linköping, Sweden. Materials Modeling and Development Laboratory, National University of Science and Technology 'MISIS', 119049 Moscow, Russia
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7
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Atakan A, Mäkie P, Söderlind F, Keraudy J, Björk EM, Odén M. Synthesis of a Cu-infiltrated Zr-doped SBA-15 catalyst for CO2hydrogenation into methanol and dimethyl ether. Phys Chem Chem Phys 2017; 19:19139-19149. [DOI: 10.1039/c7cp03037a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A catalytically active nanoassembly comprising Cu-nanoparticles grown on integrated and active supports (large pore Zr-doped mesoporous SBA-15 silica) has been synthesized and used to promote CO2hydrogenation.
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Affiliation(s)
- A. Atakan
- Nanostructured Materials
- Department of Physics
- Chemistry and Biology
- Linköping University
- Linköping SE-58183
| | - P. Mäkie
- Nanostructured Materials
- Department of Physics
- Chemistry and Biology
- Linköping University
- Linköping SE-58183
| | - F. Söderlind
- Nanostructured Materials
- Department of Physics
- Chemistry and Biology
- Linköping University
- Linköping SE-58183
| | - J. Keraudy
- Plasma and Coatings Physics Division
- Department of Physics
- Chemistry and Biology
- Linköping University
- Linköping SE-58183
| | - E. M. Björk
- Nanostructured Materials
- Department of Physics
- Chemistry and Biology
- Linköping University
- Linköping SE-58183
| | - M. Odén
- Nanostructured Materials
- Department of Physics
- Chemistry and Biology
- Linköping University
- Linköping SE-58183
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8
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Shulumba N, Hellman O, Raza Z, Alling B, Barrirero J, Mücklich F, Abrikosov IA, Odén M. Lattice Vibrations Change the Solid Solubility of an Alloy at High Temperatures. Phys Rev Lett 2016; 117:205502. [PMID: 27886477 DOI: 10.1103/physrevlett.117.205502] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Indexed: 06/06/2023]
Abstract
We develop a method to accurately and efficiently determine the vibrational free energy as a function of temperature and volume for substitutional alloys from first principles. Taking Ti_{1-x}Al_{x}N alloy as a model system, we calculate the isostructural phase diagram by finding the global minimum of the free energy corresponding to the true equilibrium state of the system. We demonstrate that the vibrational contribution including anharmonicity and temperature dependence of the mixing enthalpy have a decisive impact on the calculated phase diagram of a Ti_{1-x}Al_{x}N alloy, lowering the maximum temperature for the miscibility gap from 6560 to 2860 K. Our local chemical composition measurements on thermally aged Ti_{0.5}Al_{0.5}N alloys agree with the calculated phase diagram.
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Affiliation(s)
- Nina Shulumba
- Department of Physics, Chemistry, and Biology (IFM), Linköping University, SE-581 83 Linköping, Sweden
- Functional Materials, Saarland University, Campus D3 3, D-66123 Saarbrücken, Germany
| | - Olle Hellman
- Department of Physics, Chemistry, and Biology (IFM), Linköping University, SE-581 83 Linköping, Sweden
- Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California 91125, USA
| | - Zamaan Raza
- Department of Physics, Chemistry, and Biology (IFM), Linköping University, SE-581 83 Linköping, Sweden
| | - Björn Alling
- Department of Physics, Chemistry, and Biology (IFM), Linköping University, SE-581 83 Linköping, Sweden
- Max-Planck-Institut für Eisenforschung GmbH, D-40237 Düsseldorf, Germany
| | - Jenifer Barrirero
- Department of Physics, Chemistry, and Biology (IFM), Linköping University, SE-581 83 Linköping, Sweden
- Functional Materials, Saarland University, Campus D3 3, D-66123 Saarbrücken, Germany
| | - Frank Mücklich
- Functional Materials, Saarland University, Campus D3 3, D-66123 Saarbrücken, Germany
| | - Igor A Abrikosov
- Department of Physics, Chemistry, and Biology (IFM), Linköping University, SE-581 83 Linköping, Sweden
- Materials Modeling and Development Laboratory, NUST "MISIS," 119049 Moscow, Russia
| | - Magnus Odén
- Department of Physics, Chemistry, and Biology (IFM), Linköping University, SE-581 83 Linköping, Sweden
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9
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Şen Karaman D, Sarwar S, Desai D, Björk EM, Odén M, Chakrabarti P, Rosenholm JM, Chakraborti S. Shape engineering boosts antibacterial activity of chitosan coated mesoporous silica nanoparticle doped with silver: a mechanistic investigation. J Mater Chem B 2016; 4:3292-3304. [DOI: 10.1039/c5tb02526e] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mechanism of antibacterial activity of MSPs with high aspect ratio and surface modification.
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Affiliation(s)
- D. Şen Karaman
- Pharmaceutical Sciences Laboratory
- Faculty of Science and Engineering
- Åbo Akademi University
- Turku
- Finland
| | - S. Sarwar
- Department of Biochemistry
- Bose Institute
- Kolkata 700054
- India
| | - D. Desai
- Pharmaceutical Sciences Laboratory
- Faculty of Science and Engineering
- Åbo Akademi University
- Turku
- Finland
| | - E. M. Björk
- Nanostructured Materials Division
- Department of Physics
- Chemistry and Biology
- Linköping University
- Sweden
| | - M. Odén
- Nanostructured Materials Division
- Department of Physics
- Chemistry and Biology
- Linköping University
- Sweden
| | - P. Chakrabarti
- Department of Biochemistry
- Bose Institute
- Kolkata 700054
- India
| | - J. M. Rosenholm
- Pharmaceutical Sciences Laboratory
- Faculty of Science and Engineering
- Åbo Akademi University
- Turku
- Finland
| | - S. Chakraborti
- Department of Biochemistry
- Bose Institute
- Kolkata 700054
- India
- Department of Chemistry
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Jeenpadiphat S, Björk EM, Odén M, Tungasmita DN. Propylsulfonic acid functionalized mesoporous silica catalysts for esterification of fatty acids. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2015.10.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Schroeder JL, Thomson W, Howard B, Schell N, Näslund LÅ, Rogström L, Johansson-Jõesaar MP, Ghafoor N, Odén M, Nothnagel E, Shepard A, Greer J, Birch J. Industry-relevant magnetron sputtering and cathodic arc ultra-high vacuum deposition system for in situ x-ray diffraction studies of thin film growth using high energy synchrotron radiation. Rev Sci Instrum 2015; 86:095113. [PMID: 26429486 DOI: 10.1063/1.4930243] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We present an industry-relevant, large-scale, ultra-high vacuum (UHV) magnetron sputtering and cathodic arc deposition system purposefully designed for time-resolved in situ thin film deposition/annealing studies using high-energy (>50 keV), high photon flux (>10(12) ph/s) synchrotron radiation. The high photon flux, combined with a fast-acquisition-time (<1 s) two-dimensional (2D) detector, permits time-resolved in situ structural analysis of thin film formation processes. The high-energy synchrotron-radiation based x-rays result in small scattering angles (<11°), allowing large areas of reciprocal space to be imaged with a 2D detector. The system has been designed for use on the 1-tonne, ultra-high load, high-resolution hexapod at the P07 High Energy Materials Science beamline at PETRA III at the Deutsches Elektronen-Synchrotron in Hamburg, Germany. The deposition system includes standard features of a typical UHV deposition system plus a range of special features suited for synchrotron radiation studies and industry-relevant processes. We openly encourage the materials research community to contact us for collaborative opportunities using this unique and versatile scientific instrument.
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Affiliation(s)
- J L Schroeder
- Department of Physics, Chemistry, and Biology (IFM), Linköping University, SE-581 83 Linköping, Sweden
| | - W Thomson
- PVD Products Inc., 35 Upton Dr., Suite 200, Wilmington, Massachusetts 01887, USA
| | - B Howard
- PVD Products Inc., 35 Upton Dr., Suite 200, Wilmington, Massachusetts 01887, USA
| | - N Schell
- Helmholtz-Zentrum Geesthacht, Centre for Materials and Coastal Research, Institute for Materials Research, Max-Planck-Straße 1, 21502 Geesthacht, Germany
| | - L-Å Näslund
- Department of Physics, Chemistry, and Biology (IFM), Linköping University, SE-581 83 Linköping, Sweden
| | - L Rogström
- Department of Physics, Chemistry, and Biology (IFM), Linköping University, SE-581 83 Linköping, Sweden
| | | | - N Ghafoor
- Department of Physics, Chemistry, and Biology (IFM), Linköping University, SE-581 83 Linköping, Sweden
| | - M Odén
- Department of Physics, Chemistry, and Biology (IFM), Linköping University, SE-581 83 Linköping, Sweden
| | - E Nothnagel
- PVD Products Inc., 35 Upton Dr., Suite 200, Wilmington, Massachusetts 01887, USA
| | - A Shepard
- PVD Products Inc., 35 Upton Dr., Suite 200, Wilmington, Massachusetts 01887, USA
| | - J Greer
- PVD Products Inc., 35 Upton Dr., Suite 200, Wilmington, Massachusetts 01887, USA
| | - J Birch
- Department of Physics, Chemistry, and Biology (IFM), Linköping University, SE-581 83 Linköping, Sweden
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12
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Senthilkumar R, Karaman DŞ, Paul P, Björk EM, Odén M, Eriksson JE, Rosenholm JM. Targeted delivery of a novel anticancer compound anisomelic acid using chitosan-coated porous silica nanorods for enhancing the apoptotic effect. Biomater Sci 2015. [DOI: 10.1039/c4bm00278d] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Chitosan-coated and FA-conjugated mesoporous silica nanorods were developed for cancer-cell targeted delivery of a novel naturally derived anticancer compound.
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Affiliation(s)
| | - Didem Şen Karaman
- Laboratory of Physical Chemistry
- Åbo Akademi University
- FI-20500 Turku
- Finland
| | - Preethy Paul
- Department of Biosciences
- Cell biology
- Åbo Akademi University
- FI-20520 Turku
- Finland
| | - Emma M. Björk
- Nanostructured Materials Division
- Department of Physics
- Chemistry and Biology
- Linköping University
- Sweden
| | - Magnus Odén
- Nanostructured Materials Division
- Department of Physics
- Chemistry and Biology
- Linköping University
- Sweden
| | - John E. Eriksson
- Department of Biosciences
- Cell biology
- Åbo Akademi University
- FI-20520 Turku
- Finland
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13
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Björk EM, Söderlind F, Odén M. Tuning the shape of mesoporous silica particles by alterations in parameter space: from rods to platelets. Langmuir 2013; 29:13551-13561. [PMID: 24102575 DOI: 10.1021/la403201v] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The knowledge of how to control the pore size and morphology of separated mesoporous silica particles is crucial for optimizing their performance in applications, such as molecular sieves and drug delivery systems. In this work, we have systematically studied the effects of various synthesis parameters to gain a deeper understanding of how particle morphologies can be altered. It was found that the morphology for isolated particles of SBA-15 type, with unusually short and wide pores, could be altered from rods to platelets by variations in the NH4F concentration. The pore length is nearly constant (~300 nm) for the different morphologies, but the particle width is increasing from 200 nm to >3 μm when decreasing the amount of NH4F, and the pore size can be tuned between 10 and 13 nm. Furthermore, other synthesis parameters such as heptane concentration, pH, silica precursor, and additions of ions have also been studied. The trend regarding particle width is independent of heptane concentration, at the same time as heptane increases the particle length up to a plateau value of ~500 nm. In all, parameters controlling particle width, length, and pore size have been separated in order to evaluate their function in the particle formation. Additionally, it was found that the formation time of the particles is strongly affected by the fluoride ion concentration, and a mechanism for particle formation for this system, where micelles transform from a foam, to multilamellar vesicles, and finally to cylindrical micelles, is suggested.
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Affiliation(s)
- Emma M Björk
- Nanostructured Materials, Department of Physics, Chemistry and Biology, Linköping University , Linköping SE-58183, Sweden
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14
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Gustafsson H, Johansson EM, Barrabino A, Odén M, Holmberg K. Immobilization of lipase from Mucor miehei and Rhizopus oryzae into mesoporous silica—The effect of varied particle size and morphology. Colloids Surf B Biointerfaces 2012; 100:22-30. [DOI: 10.1016/j.colsurfb.2012.04.042] [Citation(s) in RCA: 77] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2012] [Revised: 04/19/2012] [Accepted: 04/20/2012] [Indexed: 11/25/2022]
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15
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Karaman DS, Desai D, Senthilkumar R, Johansson EM, Råtts N, Odén M, Eriksson JE, Sahlgren C, Toivola DM, Rosenholm JM. Shape engineering vs organic modification of inorganic nanoparticles as a tool for enhancing cellular internalization. Nanoscale Res Lett 2012; 7:358. [PMID: 22747910 PMCID: PMC3519764 DOI: 10.1186/1556-276x-7-358] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Accepted: 05/23/2012] [Indexed: 05/04/2023]
Abstract
In nanomedicine, physicochemical properties of the nanocarrier affect the nanoparticle's pharmacokinetics and biodistribution, which are also decisive for the passive targeting and nonspecific cellular uptake of nanoparticles. Size and surface charge are, consequently, two main determining factors in nanomedicine applications. Another important parameter which has received much less attention is the morphology (shape) of the nanocarrier. In order to investigate the morphology effect on the extent of cellular internalization, two similarly sized but differently shaped rod-like and spherical mesoporous silica nanoparticles were synthesized, characterized and functionalized to yield different surface charges. The uptake in two different cancer cell lines was investigated as a function of particle shape, coating (organic modification), surface charge and dose. According to the presented results, particle morphology is a decisive property regardless of both the different surface charges and doses tested, whereby rod-like particles internalized more efficiently in both cell lines. At lower doses whereby the shape-induced advantage is less dominant, charge-induced effects can, however, be used to fine-tune the cellular uptake as a prospective 'secondary' uptake regulator for tight dose control in nanoparticle-based drug formulations.
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Affiliation(s)
- Didem Sen Karaman
- Centre for Functional Materials, Laboratory of Physical Chemistry, Department of Natural Sciences, Åbo Akademi University, Porthansgatan 3-5, Turku, FI-20500, Finland
| | - Diti Desai
- Centre for Functional Materials, Laboratory of Physical Chemistry, Department of Natural Sciences, Åbo Akademi University, Porthansgatan 3-5, Turku, FI-20500, Finland
- Pharmacy Department, Faculty of Tech. & Eng, The M.S. University of Baroda, Vadodara, Gujarat -390002, India
| | - Rajendran Senthilkumar
- Department of Biosciences, Cell biology, Åbo Akademi University, Artillerigatan 6A, Turku FI-20520, Finland
| | - Emma M Johansson
- Nanostructured Materials Division, Department of Physics, Chemistry and Biology, Linköping University, Linköping, SE-581 83, Sweden
| | - Natalie Råtts
- Centre for Functional Materials, Laboratory of Physical Chemistry, Department of Natural Sciences, Åbo Akademi University, Porthansgatan 3-5, Turku, FI-20500, Finland
- Department of Biosciences, Cell biology, Åbo Akademi University, Artillerigatan 6A, Turku FI-20520, Finland
- Turku Centre for Biotechnology, University of Turku and Åbo Akademi University, P.O. Box 123, Turku FI-20521, Finland
| | - Magnus Odén
- Nanostructured Materials Division, Department of Physics, Chemistry and Biology, Linköping University, Linköping, SE-581 83, Sweden
| | - John E Eriksson
- Department of Biosciences, Cell biology, Åbo Akademi University, Artillerigatan 6A, Turku FI-20520, Finland
| | - Cecilia Sahlgren
- Department of Biosciences, Cell biology, Åbo Akademi University, Artillerigatan 6A, Turku FI-20520, Finland
- Turku Centre for Biotechnology, University of Turku and Åbo Akademi University, P.O. Box 123, Turku FI-20521, Finland
| | - Diana M Toivola
- Department of Biosciences, Cell biology, Åbo Akademi University, Artillerigatan 6A, Turku FI-20520, Finland
- Turku Center for Disease Modeling, Kiinamyllynkatu 10, Turku FIN-20520, Finland
| | - Jessica M Rosenholm
- Centre for Functional Materials, Laboratory of Physical Chemistry, Department of Natural Sciences, Åbo Akademi University, Porthansgatan 3-5, Turku, FI-20500, Finland
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Ballem MA, Zhang X, Johansson EM, Córdoba JM, Odén M. Low temperature nanocasting of hematite nanoparticles using mesoporous silica molds. POWDER TECHNOL 2012. [DOI: 10.1016/j.powtec.2011.10.037] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Abrikosov IA, Knutsson A, Alling B, Tasnádi F, Lind H, Hultman L, Odén M. Phase Stability and Elasticity of TiAlN. Materials (Basel) 2011; 4:1599-1618. [PMID: 28824159 PMCID: PMC5448856 DOI: 10.3390/ma4091599] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2011] [Revised: 08/29/2011] [Accepted: 08/31/2011] [Indexed: 11/20/2022]
Abstract
We review results of recent combined theoretical and experimental studies of Ti1−xAlxN, an archetypical alloy system material for hard-coating applications. Theoretical simulations of lattice parameters, mixing enthalpies, and elastic properties are presented. Calculated phase diagrams at ambient pressure, as well as at pressure of 10 GPa, show a wide miscibility gap and broad region of compositions and temperatures where the spinodal decomposition takes place. The strong dependence of the elastic properties and sound wave anisotropy on the Al-content offers detailed understanding of the spinodal decomposition and age hardening in Ti1−xAlxN alloy films and multilayers. TiAlN/TiN multilayers can further improve the hardness and thermal stability compared to TiAlN since they offer means to influence the kinetics of the favorable spinodal decomposition and suppress the detrimental transformation to w-AlN. Here, we show that a 100 degree improvement in terms of w-AlN suppression can be achieved, which is of importance when the coating is used as a protective coating on metal cutting inserts.
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Affiliation(s)
- Igor A Abrikosov
- Department of Physics, Chemistry, and Biology (IFM), Linköping University, Linköping 58183, Sweden.
| | - Axel Knutsson
- Department of Physics, Chemistry, and Biology (IFM), Linköping University, Linköping 58183, Sweden.
| | - Björn Alling
- Department of Physics, Chemistry, and Biology (IFM), Linköping University, Linköping 58183, Sweden.
| | - Ferenc Tasnádi
- Department of Physics, Chemistry, and Biology (IFM), Linköping University, Linköping 58183, Sweden.
| | - Hans Lind
- Department of Physics, Chemistry, and Biology (IFM), Linköping University, Linköping 58183, Sweden.
| | - Lars Hultman
- Department of Physics, Chemistry, and Biology (IFM), Linköping University, Linköping 58183, Sweden.
| | - Magnus Odén
- Department of Physics, Chemistry, and Biology (IFM), Linköping University, Linköping 58183, Sweden.
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18
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Johansson EM, Ballem MA, Córdoba JM, Odén M. Rapid synthesis of SBA-15 rods with variable lengths, widths, and tunable large pores. Langmuir 2011; 27:4994-9. [PMID: 21413751 DOI: 10.1021/la104864d] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Dispersed SBA-15 rods have been synthesized with varying lengths, widths, and pore sizes in a low-temperature synthesis in the presence of heptane and NH(4)F. The pore size of the material can systematically be varied between 11 and 17 nm using different hydrothermal treatment times and/or temperatures. The particle length (400-600 nm) and width (100-400 nm) were tuned by varying the HCl concentration. All the synthesized materials possess a large surface area of 400-600 m(2)/g and a pore volume of 1.05-1.30 cm(3). A mechanism for the effect of the HCl concentration on the particle morphology is suggested. Furthermore, it is shown that the reaction time can be decreased to 1 h, with well-retained pore size and morphology. This work has resulted in SBA-15 rods with the largest pore size reported for this morphology.
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Affiliation(s)
- Emma M Johansson
- Nanostructured Materials, Department of Physics, Chemistry and Biology, Linköping University, Linköping SE-58183, Sweden.
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Tsai HT, Córdoba JM, Johansson EM, Ballem MA, Odén M. Silica SBA-15 template assisted synthesis of ultrasmall and homogeneously sized copper nanoparticles. J Nanosci Nanotechnol 2011; 11:3493-3498. [PMID: 21776729 DOI: 10.1166/jnn.2011.3609] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The synthesis of spherical copper nanoparticles with extremely narrow size distribution by electroless copper deposition on mesoporous silica support is described. The materials were characterized by nitrogen sorption, transmission electron microscopy, x-ray diffractometry and Fourier transform infrared spectroscopy. The copper nanoparticles have a cubic crystalline structure and an average particle size of 5.5 +/- 0.8 nm. The copper nanoparticles are stable, without detectable oxidation or further agglomeration under ambient conditions even after months. These results demonstrate that electroless copper reduction can be conducted and constrained within the mesoporous silica framework, which pave the way for engineered mesoreactors.
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Affiliation(s)
- H T Tsai
- Department of Physics, Chemistry and Biology (IFM), Division of Nanostructured Materials, Linköping University, SE-581 83 Linköping, Sweden
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Amini S, Córdoba Gallego JM, Daemen L, McGhie AR, Ni C, Hultman L, Odén M, Barsoum MW. On the stability of mg nanograins to coarsening after repeated melting. Nano Lett 2009; 9:3082-3086. [PMID: 19606848 DOI: 10.1021/nl9015683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Herein we report on the extraordinary thermal stability of approximately 35 nm Mg-nanograins that constitute the matrix of a Ti(2)AlC-Mg composite that has previously been shown to have excellent mechanical properties. The microstructure is so stable that heating the composite three times to 700 degrees C, which is 50 degrees C over the melting point of Mg, not only resulted in the repeated melting of the Mg, but surprisingly and within the resolution of our differential scanning calorimeter, did not lead to any coarsening. The reduction in the Mg melting point due to the nanograins was approximately 50 degrees C. X-ray diffraction and neutron spectroscopy results suggest that thin, amorphous, and/or poorly crystallized rutile, anatase, and/or magnesia layers separate the Mg nanograins and prevent them from coarsening. Clearly that layer is thin enough, and thus mechanically robust enough, to survive the melting and solidification stresses encountered during cycling. Annealing in hydrogen at 250 degrees C for 20 h, also did not seem to alter the grain size significantly.
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Affiliation(s)
- Shahram Amini
- Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104, USA.
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Mangalaraja R, Mouzon J, Hedström P, Camurri CP, Ananthakumar S, Odén M. Microwave assisted combustion synthesis of nanocrystalline yttria and its powder characteristics. POWDER TECHNOL 2009. [DOI: 10.1016/j.powtec.2008.10.019] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Molina-aldareguia JM, Lloyd SJ, Odén M, Joelsson T, Hultman L, Clegg WJ. Deformation structures under indentations in TiN/NbN single-crystal multilayers deposited by magnetron sputtering at different bombarding ion energies. ACTA ACUST UNITED AC 2002. [DOI: 10.1080/01418610208235710] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Moverare JJ, Odén M. Anisotropic High Cycle Fatigue Behaviour of Duplex Stainless Steels: Influence of Microstresses. ACTA ACUST UNITED AC 2002. [DOI: 10.3139/146.020007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Risberg B, Medegård A, Heideman M, Gyzander E, Bundsen P, Odén M, Teger-Nilsson AC. Early activation of humoral proteolytic systems in patients with multiple trauma. Crit Care Med 1986; 14:917-25. [PMID: 3769501 DOI: 10.1097/00003246-198611000-00001] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Coagulation, fibrinolytic, kallikrein, and complement systems were studied in 20 patients with multiple trauma. Three of four patients with a trauma score less than 10 on hospital arrival died, compared to one of 16 with a score over 10. Five patients developed disseminated intravascular coagulation. Signs of activated cascade systems were evident in most patients on hospital arrival. Changes were not related to trauma score, but patients with an arterial pressure below 110 mm Hg had significantly lower levels of antithrombin III and alpha 2-antiplasmin than those with higher BP. This study confirms that the cascade systems are activated very soon after multiple trauma.
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