1
|
Junker B, Kobald A, Ewald C, Janoschek P, Schalk M, Weimar U, Mädler L, Bârsan N. Multivariate Analysis of Light-Activated SMOX Gas Sensors. ACS Sens 2024; 9:1584-1591. [PMID: 38450591 DOI: 10.1021/acssensors.4c00078] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
Chemoresistive gas sensors made from SnO2, ZnO, WO3, and In2O3 have been prepared by flame spray pyrolysis. The sensors' response to CO and NO2 in darkness and under illumination at different wavelengths, using commercially available LEDs, was investigated. Operation at room temperature turned out to be impractical due to the condensation of water inside the porous sensing layers and the irreversible changes it caused. Accordingly, for sensors operated at 70 °C, a characterization procedure was developed and proven to deliver consistent data. The resulting data set was so complex that usual univariate data analysis was intricate and, consequently, was investigated by correlation and principal component analysis. The results show that light of different wavelengths affects not only the resistance of each material, both under exposure to the target gases in humidity and in its absence, but also the sensor response to humidity and the target gases. It was found that each of the materials behaves differently under light exposure, and it was possible to identify conditions that need further investigations.
Collapse
Affiliation(s)
- Benjamin Junker
- Institute of Physical and Theoretical Chemistry and Center for Light-Matter Interaction, Sensors & Analytics (LISA+), University of Tübingen, 72076 Tübingen, Germany
| | - Arne Kobald
- Institute of Physical and Theoretical Chemistry and Center for Light-Matter Interaction, Sensors & Analytics (LISA+), University of Tübingen, 72076 Tübingen, Germany
| | - Carolin Ewald
- Institute of Physical and Theoretical Chemistry and Center for Light-Matter Interaction, Sensors & Analytics (LISA+), University of Tübingen, 72076 Tübingen, Germany
| | - Peter Janoschek
- Institute of Physical and Theoretical Chemistry and Center for Light-Matter Interaction, Sensors & Analytics (LISA+), University of Tübingen, 72076 Tübingen, Germany
| | - Malte Schalk
- Faculty of Production Engineering, University of Bremen, and Leibniz Institute for Materials Engineering IWT, 28359 Bremen, Germany
| | - Udo Weimar
- Institute of Physical and Theoretical Chemistry and Center for Light-Matter Interaction, Sensors & Analytics (LISA+), University of Tübingen, 72076 Tübingen, Germany
| | - Lutz Mädler
- Faculty of Production Engineering, University of Bremen, and Leibniz Institute for Materials Engineering IWT, 28359 Bremen, Germany
| | - Nicolae Bârsan
- Institute of Physical and Theoretical Chemistry and Center for Light-Matter Interaction, Sensors & Analytics (LISA+), University of Tübingen, 72076 Tübingen, Germany
| |
Collapse
|
2
|
Mensching N, Krüger ML, Kvaratskheliya A, Meyer D, Tracht K, Okulov I, Mädler L. Dry-Adhesive Microstructures for Material Handling of Additively Manufactured and Deep-Rolled Metal Surfaces with Reference to Mars. Materials (Basel) 2023; 16:ma16114170. [PMID: 37297304 DOI: 10.3390/ma16114170] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 05/25/2023] [Accepted: 06/01/2023] [Indexed: 06/12/2023]
Abstract
Once on Mars, maintenance and repair will be crucial for humans as supply chains including Earth and Mars will be very complex. Consequently, the raw material available on Mars must be processed and used. Factors such as the energy available for material production play just as important a role as the quality of the material that can be produced and the quality of its surface. To develop and technically implement a process chain that meets the challenge of producing spare parts from oxygen-reduced Mars regolith, this paper addresses the issue of low-energy handling. Expected statistically distributed high roughnesses of sintered regolith analogs are approximated in this work by parameter variation in the PBF-LB/M process. For low-energy handling, a dry-adhesive microstructure is used. Investigations are carried out to determine the extent to which the rough surface resulting from the manufacturing process can be smoothed by deep-rolling in such a way that the microstructure adheres and enables samples to be transported. For the investigated AlSi10Mg samples (12 mm × 12 mm × 10 mm), the surface roughness varies in a wide range from Sa 7.7 µm to Sa 64 µm after the additive manufacturing process, and pull-off stresses of up to 6.99 N/cm2 could be realized after deep-rolling. This represents an increase in pull-off stresses by a factor of 392.94 compared to the pull-off stresses before deep-rolling, enabling the handling of even larger specimens. It is noteworthy that specimens with roughness values that were previously difficult to handle can be treated post-deep-rolling, indicating a potential influence of additional variables that describe roughness or ripples and are associated with the adhesion effect of the microstructure of the dry adhesive.
Collapse
Affiliation(s)
- Nicole Mensching
- Center for Materials and Processes (MAPEX), University of Bremen, Bibliothekstr. 1, 28359 Bremen, Germany
- Leibniz Institute for Materials Engineering IWT, Badgasteiner Straße 3, 28359 Bremen, Germany
| | - Mirja Louisa Krüger
- Center for Materials and Processes (MAPEX), University of Bremen, Bibliothekstr. 1, 28359 Bremen, Germany
- Bremen Institute for Mechanical Engineering (bime), University of Bremen, Badgasteiner Str. 1, 28359 Bremen, Germany
| | - Askar Kvaratskheliya
- Center for Materials and Processes (MAPEX), University of Bremen, Bibliothekstr. 1, 28359 Bremen, Germany
- Leibniz Institute for Materials Engineering IWT, Badgasteiner Straße 3, 28359 Bremen, Germany
| | - Daniel Meyer
- Center for Materials and Processes (MAPEX), University of Bremen, Bibliothekstr. 1, 28359 Bremen, Germany
- Leibniz Institute for Materials Engineering IWT, Badgasteiner Straße 3, 28359 Bremen, Germany
| | - Kirsten Tracht
- Center for Materials and Processes (MAPEX), University of Bremen, Bibliothekstr. 1, 28359 Bremen, Germany
- Bremen Institute for Mechanical Engineering (bime), University of Bremen, Badgasteiner Str. 1, 28359 Bremen, Germany
| | - Ilya Okulov
- Center for Materials and Processes (MAPEX), University of Bremen, Bibliothekstr. 1, 28359 Bremen, Germany
- Leibniz Institute for Materials Engineering IWT, Badgasteiner Straße 3, 28359 Bremen, Germany
| | - Lutz Mädler
- Center for Materials and Processes (MAPEX), University of Bremen, Bibliothekstr. 1, 28359 Bremen, Germany
- Leibniz Institute for Materials Engineering IWT, Badgasteiner Straße 3, 28359 Bremen, Germany
- Faculty of Production Engineering, University of Bremen, Badgasteiner Straße 2, 28359 Bremen, Germany
| |
Collapse
|
3
|
Pokhrel S, Stahl J, Groeneveld JD, Schowalter M, Rosenauer A, Birkenstock J, Mädler L. Flame Aerosol Synthesis of Metal Sulfides at High Temperature in Oxygen-Lean Atmosphere. Adv Mater 2023:e2211104. [PMID: 37029337 DOI: 10.1002/adma.202211104] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 04/03/2023] [Indexed: 05/31/2023]
Abstract
The development of a novel reactive spray technology based on the well-known gas-phase metal oxide synthesis route provides innumerable opportunities for the production of non-oxide nanoparticles. Among these materials, metal sulfides are expected to have a high impact, especially in the development of electrochemical and photochemical high-surface-area materials. As a proof-of-principle, MnS, CoS, Cu2 S, ZnS, Ag2 S, In2 S3 , SnS, and Bi2 S3 are synthesized in an O2 -lean and sulfur-rich environment. In addition, the formation of Cu2 S in a single-droplet combustion experiment is reported. The multiscale approach combining flame sprays with single-droplet combustion is expected to pave the way toward a fundamental understanding of the gas-phase formation of metal sulfides in the future. The knowledge acquired can open the possibility for the development of a next-generation gas-phase technology facilitating the scalable synthesis of functional binary/ternary metal sulfides.
Collapse
Affiliation(s)
- Suman Pokhrel
- Faculty of Production Engineering, University of Bremen, Badgasteiner Straße 1, D-28359, Bremen, Germany
- Leibniz Institute for Materials Engineering IWT, Badgasteiner Straße 3, D-28359, Bremen, Germany
- MAPEX Center for Materials and Processes, University of Bremen, D-28359, Bremen, Germany
| | - Jakob Stahl
- Faculty of Production Engineering, University of Bremen, Badgasteiner Straße 1, D-28359, Bremen, Germany
- Leibniz Institute for Materials Engineering IWT, Badgasteiner Straße 3, D-28359, Bremen, Germany
| | - Jan Derk Groeneveld
- Faculty of Production Engineering, University of Bremen, Badgasteiner Straße 1, D-28359, Bremen, Germany
- Leibniz Institute for Materials Engineering IWT, Badgasteiner Straße 3, D-28359, Bremen, Germany
| | - Marco Schowalter
- MAPEX Center for Materials and Processes, University of Bremen, D-28359, Bremen, Germany
- Institute of Solid State Physics, University of Bremen, Otto-Hahn-Allee 1, 28359, Bremen, Germany
| | - Andreas Rosenauer
- MAPEX Center for Materials and Processes, University of Bremen, D-28359, Bremen, Germany
- Institute of Solid State Physics, University of Bremen, Otto-Hahn-Allee 1, 28359, Bremen, Germany
| | - Johannes Birkenstock
- Faculty of Geosciences/ Crystallography group, University of Bremen, Klagenfurter Str. 2-4, 28359, Bremen, Germany
| | - Lutz Mädler
- Faculty of Production Engineering, University of Bremen, Badgasteiner Straße 1, D-28359, Bremen, Germany
- Leibniz Institute for Materials Engineering IWT, Badgasteiner Straße 3, D-28359, Bremen, Germany
- MAPEX Center for Materials and Processes, University of Bremen, D-28359, Bremen, Germany
| |
Collapse
|
4
|
Gomes SIL, Roca CP, Pokhrel S, Mädler L, Scott-Fordsmand JJ, Amorim MJB. TiO 2 nanoparticles' library toxicity (UV and non-UV exposure) - High-throughput in vivo transcriptomics reveals mechanisms. NanoImpact 2023; 30:100458. [PMID: 36858316 DOI: 10.1016/j.impact.2023.100458] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 02/21/2023] [Accepted: 02/24/2023] [Indexed: 06/03/2023]
Abstract
The hazards of nanomaterials/nanoparticles (NMs/NPs) are mostly assessed using individual NMs, and a more systematic approach, using many NMs, is needed to evaluate its risks in the environment. Libraries of NMs, with a range of identified different but related characters/descriptors allow the comparison of effects across many NMs. The effects of a custom designed Fe-doped TiO2 NMs library containing 11 NMs was assessed on the soil model Enchytraeus crypticus (Oligochaeta), both with and without UV (standard fluorescent) radiation. Effects were analyzed at organism (phenotypic, survival and reproduction) and gene expression level (transcriptomics, high-throughput 4x44K microarray) to understand the underlying mechanisms. A total of 48 microarrays (20 test conditions) were done plus controls (UV and non-UV). Unique mechanisms induced by TiO2 NPs exposure included the impairment in RNA processing for TiO2_10nm, or deregulated apoptosis for 2%FeTiO2_10nm. Strikingly apparent was the size dependent effects such as induction of reproductive effects via smaller TiO2 NPs (≤12 nm) - embryo interaction, while larger particles (27 nm) caused reproductive effects through different mechanisms. Also, phagocytosis was affected by 12 and 27 nm NPs, but not by ≤11 nm. The organism level study shows the integrated response, i.e. the result after a cascade of events. While uni-cell models offer key mechanistic information, we here deliver a combined biological system level (phenotype and genotype), seldom available, especially for environmental models.
Collapse
Affiliation(s)
- Susana I L Gomes
- Department of Biology & CESAM, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Carlos P Roca
- Department of Ecoscience, Aarhus University, C.F. Møllers Alle 4, DK-8000, Aarhus, Denmark
| | - Suman Pokhrel
- Department of Production Engineering, University of Bremen, Badgasteiner Str. 1, 28359 Bremen, Germany; Leibniz Institute for Materials Engineering IWT, Badgasteiner Str. 3, 28359 Bremen, Germany
| | - Lutz Mädler
- Department of Production Engineering, University of Bremen, Badgasteiner Str. 1, 28359 Bremen, Germany; Leibniz Institute for Materials Engineering IWT, Badgasteiner Str. 3, 28359 Bremen, Germany
| | | | - Mónica J B Amorim
- Department of Biology & CESAM, University of Aveiro, 3810-193 Aveiro, Portugal.
| |
Collapse
|
5
|
Hesemans E, Saffarzadeh N, Maksoudian C, Izci M, Chu T, Rios Luci C, Wang Y, Naatz H, Thieme S, Richter C, Manshian BB, Pokhrel S, Mädler L, Soenen SJ. Cu-doped TiO 2 nanoparticles improve local antitumor immune activation and optimize dendritic cell vaccine strategies. J Nanobiotechnology 2023; 21:87. [PMID: 36915084 PMCID: PMC10009859 DOI: 10.1186/s12951-023-01844-z] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 03/06/2023] [Indexed: 03/16/2023] Open
Abstract
Nanoparticle-mediated cancer immunotherapy holds great promise, but more efforts are needed to obtain nanoformulations that result in a full scale activation of innate and adaptive immune components that specifically target the tumors. We generated a series of copper-doped TiO2 nanoparticles in order to tune the kinetics and full extent of Cu2+ ion release from the remnant TiO2 nanocrystals. Fine-tuning nanoparticle properties resulted in a formulation of 33% Cu-doped TiO2 which enabled short-lived hyperactivation of dendritic cells and hereby promoted immunotherapy. The nanoparticles result in highly efficient activation of dendritic cells ex vivo, which upon transplantation in tumor bearing mice, exceeded the therapeutic outcomes obtained with classically stimulated dendritic cells. Efficacious but simple nanomaterials that can promote dendritic cancer cell vaccination strategies open up new avenues for improved immunotherapy and human health.
Collapse
Affiliation(s)
- Evelien Hesemans
- NanoHealth and Optical Imaging Group, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
| | - Neshat Saffarzadeh
- NanoHealth and Optical Imaging Group, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
| | - Christy Maksoudian
- NanoHealth and Optical Imaging Group, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
| | - Mukaddes Izci
- NanoHealth and Optical Imaging Group, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
| | - Tianjiao Chu
- NanoHealth and Optical Imaging Group, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
| | - Carla Rios Luci
- NanoHealth and Optical Imaging Group, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
| | - Yuqing Wang
- Leibniz Institute for Materials Engineering IWT, Badgasteiner Straße 3, 28359, Bremen, Germany.,Faculty of Production Engineering, University of Bremen, Badgasteiner Straße 1, 28359, Bremen, Germany
| | - Hendrik Naatz
- Leibniz Institute for Materials Engineering IWT, Badgasteiner Straße 3, 28359, Bremen, Germany.,Faculty of Production Engineering, University of Bremen, Badgasteiner Straße 1, 28359, Bremen, Germany
| | | | | | - Bella B Manshian
- Translational Cell and Tissue Research Unit, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium.,Leuven Cancer Institute, KU Leuven, Leuven, Belgium
| | - Suman Pokhrel
- Leibniz Institute for Materials Engineering IWT, Badgasteiner Straße 3, 28359, Bremen, Germany.,Faculty of Production Engineering, University of Bremen, Badgasteiner Straße 1, 28359, Bremen, Germany
| | - Lutz Mädler
- Leibniz Institute for Materials Engineering IWT, Badgasteiner Straße 3, 28359, Bremen, Germany.,Faculty of Production Engineering, University of Bremen, Badgasteiner Straße 1, 28359, Bremen, Germany
| | - Stefaan J Soenen
- NanoHealth and Optical Imaging Group, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium. .,Leuven Cancer Institute, KU Leuven, Leuven, Belgium. .,KU Leuven Institute of Physics-Based Modeling for In Silico Health, KU Leuven, Leuven, Belgium.
| |
Collapse
|
6
|
Endres SC, Mädler L. Asymmetric Three‐Phase Surface Tension Forces in Agglomerating Particulate Systems. CHEM-ING-TECH 2022. [DOI: 10.1002/cite.202200128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Affiliation(s)
- Stefan Christian Endres
- University of Bremen Leibniz Institute of Materials Engineering- IWT Faculty of Production Engineering 28359 Bremen Germany
| | - Lutz Mädler
- University of Bremen Leibniz Institute of Materials Engineering- IWT Faculty of Production Engineering 28359 Bremen Germany
| |
Collapse
|
7
|
Endres SC, Avila M, Mädler L. A discrete differential geometric formulation of multiphase surface interfaces for scalable multiphysics equilibrium simulations. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.117681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
8
|
Gäßler M, Stahl J, Schowalter M, Pokhrel S, Rosenauer A, Mädler L, Güttel R. The Impact of Support Material of Cobalt‐Based Catalysts Prepared by Double Flame Spray Pyrolysis on CO2 Methanation Dynamics. ChemCatChem 2022. [DOI: 10.1002/cctc.202200286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Max Gäßler
- Ulm University: Universitat Ulm Institute of Chemical Engineering GERMANY
| | - Jakob Stahl
- University of Bremen: Universitat Bremen Faculty of Production Engineering GERMANY
| | - Marco Schowalter
- University of Bremen: Universitat Bremen Institute of Solid State Physics GERMANY
| | - Suman Pokhrel
- University of Bremen: Universitat Bremen Faculty of Production Engineering GERMANY
| | - Andreas Rosenauer
- University of Bremen: Universitat Bremen Institute of Solid State Physics GERMANY
| | - Lutz Mädler
- University of Bremen: Universitat Bremen Faculty of Production Engineering GERMANY
| | - Robert Güttel
- Universitat Ulm Institute of Chemical Process Engineering Albert-Einstein-Allee 11 89081 Ulm GERMANY
| |
Collapse
|
9
|
Elberskirch L, Sofranko A, Liebing J, Riefler N, Binder K, Bonatto Minella C, Razum M, Mädler L, Unfried K, Schins RPF, Kraegeloh A, van Thriel C. How Structured Metadata Acquisition Contributes to the Reproducibility of Nanosafety Studies: Evaluation by a Round-Robin Test. Nanomaterials (Basel) 2022; 12:nano12071053. [PMID: 35407172 PMCID: PMC9000531 DOI: 10.3390/nano12071053] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 03/14/2022] [Accepted: 03/16/2022] [Indexed: 11/19/2022]
Abstract
It has been widely recognized that nanosafety studies are limited in reproducibility, caused by missing or inadequate information and data gaps. Reliable and comprehensive studies should be performed supported by standards or guidelines, which need to be harmonized and usable for the multidisciplinary field of nanosafety research. The previously described minimal information table (MIT), based on existing standards or guidelines, represents one approach towards harmonization. Here, we demonstrate the applicability and advantages of the MIT by a round-robin test. Its modular structure enables describing individual studies comprehensively by a combination of various relevant aspects. Three laboratories conducted a WST-1 cell viability assay using A549 cells to analyze the effects of the reference nanomaterials NM101 and NM110 according to predefined (S)OPs. The MIT contains relevant and defined descriptive information and quality criteria and thus supported the implementation of the round-robin test from planning, investigation to analysis and data interpretation. As a result, we could identify sources of variability and justify deviating results attributed to differences in specific procedures. Consequently, the use of the MIT contributes to the acquisition of reliable and comprehensive datasets and therefore improves the significance and reusability of nanosafety studies.
Collapse
Affiliation(s)
- Linda Elberskirch
- INM—Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany;
| | - Adriana Sofranko
- IUF—Leibniz Research Institute for Environmental Medicine, Auf’m Hennekamp 50, 40225 Düsseldorf, Germany; (A.S.); (K.U.); (R.P.F.S.)
| | - Julia Liebing
- IfADo—Leibniz Research Centre for Working Environment and Human Factors, Ardeystraße 67, 44139 Dortmund, Germany;
| | - Norbert Riefler
- IWT—Leibniz-Institut für Werkstofforientierte Technologien, Badgasteiner Str. 3, 28359 Bremen, Germany; (N.R.); (L.M.)
| | - Kunigunde Binder
- FIZ Karlsruhe—Leibniz Institute for Information Infrastructure, Hermann-von-Helmholtz-Platz 1, 76133 Eggenstein-Leopoldshafen, Germany; (K.B.); (C.B.M.); (M.R.)
| | - Christian Bonatto Minella
- FIZ Karlsruhe—Leibniz Institute for Information Infrastructure, Hermann-von-Helmholtz-Platz 1, 76133 Eggenstein-Leopoldshafen, Germany; (K.B.); (C.B.M.); (M.R.)
| | - Matthias Razum
- FIZ Karlsruhe—Leibniz Institute for Information Infrastructure, Hermann-von-Helmholtz-Platz 1, 76133 Eggenstein-Leopoldshafen, Germany; (K.B.); (C.B.M.); (M.R.)
| | - Lutz Mädler
- IWT—Leibniz-Institut für Werkstofforientierte Technologien, Badgasteiner Str. 3, 28359 Bremen, Germany; (N.R.); (L.M.)
| | - Klaus Unfried
- IUF—Leibniz Research Institute for Environmental Medicine, Auf’m Hennekamp 50, 40225 Düsseldorf, Germany; (A.S.); (K.U.); (R.P.F.S.)
| | - Roel P. F. Schins
- IUF—Leibniz Research Institute for Environmental Medicine, Auf’m Hennekamp 50, 40225 Düsseldorf, Germany; (A.S.); (K.U.); (R.P.F.S.)
| | - Annette Kraegeloh
- INM—Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany;
- Correspondence: (A.K.); (C.v.T.)
| | - Christoph van Thriel
- IfADo—Leibniz Research Centre for Working Environment and Human Factors, Ardeystraße 67, 44139 Dortmund, Germany;
- Correspondence: (A.K.); (C.v.T.)
| |
Collapse
|
10
|
Elberskirch L, Binder K, Riefler N, Sofranko A, Liebing J, Minella CB, Mädler L, Razum M, van Thriel C, Unfried K, Schins RPF, Kraegeloh A. Digital research data: from analysis of existing standards to a scientific foundation for a modular metadata schema in nanosafety. Part Fibre Toxicol 2022; 19:1. [PMID: 34983569 PMCID: PMC8728981 DOI: 10.1186/s12989-021-00442-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 12/16/2021] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Assessing the safety of engineered nanomaterials (ENMs) is an interdisciplinary and complex process producing huge amounts of information and data. To make such data and metadata reusable for researchers, manufacturers, and regulatory authorities, there is an urgent need to record and provide this information in a structured, harmonized, and digitized way. RESULTS This study aimed to identify appropriate description standards and quality criteria for the special use in nanosafety. There are many existing standards and guidelines designed for collecting data and metadata, ranging from regulatory guidelines to specific databases. Most of them are incomplete or not specifically designed for ENM research. However, by merging the content of several existing standards and guidelines, a basic catalogue of descriptive information and quality criteria was generated. In an iterative process, our interdisciplinary team identified deficits and added missing information into a comprehensive schema. Subsequently, this overview was externally evaluated by a panel of experts during a workshop. This whole process resulted in a minimum information table (MIT), specifying necessary minimum information to be provided along with experimental results on effects of ENMs in the biological context in a flexible and modular manner. The MIT is divided into six modules: general information, material information, biological model information, exposure information, endpoint read out information and analysis and statistics. These modules are further partitioned into module subdivisions serving to include more detailed information. A comparison with existing ontologies, which also aim to electronically collect data and metadata on nanosafety studies, showed that the newly developed MIT exhibits a higher level of detail compared to those existing schemas, making it more usable to prevent gaps in the communication of information. CONCLUSION Implementing the requirements of the MIT into e.g., electronic lab notebooks (ELNs) would make the collection of all necessary data and metadata a daily routine and thereby would improve the reproducibility and reusability of experiments. Furthermore, this approach is particularly beneficial regarding the rapidly expanding developments and applications of novel non-animal alternative testing methods.
Collapse
Affiliation(s)
- Linda Elberskirch
- INM - Leibniz Institute for New Materials, Campus D2 2, 66123, Saarbrücken, Germany
| | - Kunigunde Binder
- FIZ Karlsruhe - Leibniz Institute for Information Infrastructure, Hermann-von-Helmholtz-Platz 1, 76133, Eggenstein-Leopoldshafen, Germany
| | - Norbert Riefler
- IWT - Leibniz-Institut für Werkstofforientierte Technologien, Badgasteiner Str. 3, 28359, Bremen, Germany
| | - Adriana Sofranko
- IUF - Leibniz Research Institute for Environmental Medicine, Auf'm Hennekamp 50, 40225, Düsseldorf, Germany
| | - Julia Liebing
- IfADo - Leibniz Research Centre for Working Environment and Human Factors, Ardeystraße 67, 44139, Dortmund, Germany
| | - Christian Bonatto Minella
- FIZ Karlsruhe - Leibniz Institute for Information Infrastructure, Hermann-von-Helmholtz-Platz 1, 76133, Eggenstein-Leopoldshafen, Germany
| | - Lutz Mädler
- IWT - Leibniz-Institut für Werkstofforientierte Technologien, Badgasteiner Str. 3, 28359, Bremen, Germany
| | - Matthias Razum
- FIZ Karlsruhe - Leibniz Institute for Information Infrastructure, Hermann-von-Helmholtz-Platz 1, 76133, Eggenstein-Leopoldshafen, Germany
| | - Christoph van Thriel
- IfADo - Leibniz Research Centre for Working Environment and Human Factors, Ardeystraße 67, 44139, Dortmund, Germany
| | - Klaus Unfried
- IUF - Leibniz Research Institute for Environmental Medicine, Auf'm Hennekamp 50, 40225, Düsseldorf, Germany
| | - Roel P F Schins
- IUF - Leibniz Research Institute for Environmental Medicine, Auf'm Hennekamp 50, 40225, Düsseldorf, Germany
| | - Annette Kraegeloh
- INM - Leibniz Institute for New Materials, Campus D2 2, 66123, Saarbrücken, Germany.
| |
Collapse
|
11
|
Gomes SIL, Amorim MJB, Pokhrel S, Mädler L, Fasano M, Chiavazzo E, Asinari P, Jänes J, Tämm K, Burk J, Scott-Fordsmand JJ. Machine learning and materials modelling interpretation of in vivo toxicological response to TiO 2 nanoparticles library (UV and non-UV exposure). Nanoscale 2021; 13:14666-14678. [PMID: 34533558 DOI: 10.1039/d1nr03231c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Assessing the risks of nanomaterials/nanoparticles (NMs/NPs) under various environmental conditions requires a more systematic approach, including the comparison of effects across many NMs with identified different but related characters/descriptors. Hence, there is an urgent need to provide coherent (eco)toxicological datasets containing comprehensive toxicity information relating to a diverse spectra of NPs characters. These datasets are test benches for developing holistic methodologies with broader applicability. In the present study we assessed the effects of a custom design Fe-doped TiO2 NPs library, using the soil invertebrate Enchytraeus crypticus (Oligochaeta), via a 5-day pulse via aqueous exposure followed by a 21-days recovery period in soil (survival, reproduction assessment). Obviously, when testing TiO2, realistic conditions should include UV exposure. The 11 Fe-TiO2 library contains NPs of size range between 5-27 nm with varying %Fe (enabling the photoactivation of TiO2 at energy wavelengths in the visible-light range). The NPs were each described by 122 descriptors, being a mixture of measured and atomistic model descriptors. The data were explored using single and univariate statistical methods, combined with machine learning and multiscale modelling techniques. An iterative pruning process was adopted for identifying automatically the most significant descriptors. TiO2 NPs toxicity decreased when combined with UV. Notably, the short-term water exposure induced lasting biological responses even after longer-term recovery in clean exposure. The correspondence with Fe-content correlated with the band-gap hence the reduction of UV oxidative stress. The inclusion of both measured and modelled materials data benefitted the explanation of the results, when combined with machine learning.
Collapse
Affiliation(s)
- Susana I L Gomes
- Department of Biology & CESAM, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Mónica J B Amorim
- Department of Biology & CESAM, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Suman Pokhrel
- Department of Production Engineering, University of Bremen, Badgasteiner Str. 1, 28359 Bremen, Germany
- Leibniz Institute for Materials Engineering IWT, Badgasteiner Str. 3, 28359 Bremen, Germany
| | - Lutz Mädler
- Department of Production Engineering, University of Bremen, Badgasteiner Str. 1, 28359 Bremen, Germany
- Leibniz Institute for Materials Engineering IWT, Badgasteiner Str. 3, 28359 Bremen, Germany
| | - Matteo Fasano
- Energy Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino 10129, Italy
| | - Eliodoro Chiavazzo
- Energy Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino 10129, Italy
| | - Pietro Asinari
- Energy Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino 10129, Italy
- INRIM, Istituto Nazionale di Ricerca Metrologica, Strada delle Cacce 91, Torino 10135, Italy
| | - Jaak Jänes
- Department of Chemistry, University of Tartu, Ravila 14a, Tartu 50411, Estonia
| | - Kaido Tämm
- Department of Chemistry, University of Tartu, Ravila 14a, Tartu 50411, Estonia
| | - Jaanus Burk
- Department of Chemistry, University of Tartu, Ravila 14a, Tartu 50411, Estonia
| | - Janeck J Scott-Fordsmand
- Department of Bioscience, Aarhus University, Vejlsovej 25, PO BOX 314, DK-8600 Silkeborg, Denmark
| |
Collapse
|
12
|
Stahl J, Ilsemann J, Pokhrel S, Schowalter M, Tessarek C, Rosenauer A, Eickhoff M, Bäumer M, Mädler L. Comparing Co‐catalytic Effects of ZrO
x
, SmO
x
, and Pt on CO
x
Methanation over Co‐based Catalysts Prepared by Double Flame Spray Pyrolysis. ChemCatChem 2021. [DOI: 10.1002/cctc.202001998] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jakob Stahl
- Faculty of Production Engineering University of Bremen Badgasteiner Straße 1 28359 Bremen Germany
| | - Jan Ilsemann
- Institute of Applied and Physical Chemistry and Center for Environmental Research (UFT) University of Bremen Leobener Straße 6 28359 Bremen Germany
| | - Suman Pokhrel
- Faculty of Production Engineering University of Bremen Badgasteiner Straße 1 28359 Bremen Germany
- Leibniz Institute for Materials Engineering IWT Badgasteiner Straße 3 28359 Bremen Germany
| | - Marco Schowalter
- Institute of Solid State Physics University of Bremen Otto-Hahn-Allee 1 28359 Bremen Germany
| | - Christian Tessarek
- Institute of Solid State Physics University of Bremen Otto-Hahn-Allee 1 28359 Bremen Germany
| | - Andreas Rosenauer
- Institute of Solid State Physics University of Bremen Otto-Hahn-Allee 1 28359 Bremen Germany
- MAPEX Center for Materials and Processes University of Bremen Postfach 330 440 Germany
| | - Martin Eickhoff
- Institute of Solid State Physics University of Bremen Otto-Hahn-Allee 1 28359 Bremen Germany
- MAPEX Center for Materials and Processes University of Bremen Postfach 330 440 Germany
| | - Marcus Bäumer
- Institute of Applied and Physical Chemistry and Center for Environmental Research (UFT) University of Bremen Leobener Straße 6 28359 Bremen Germany
- MAPEX Center for Materials and Processes University of Bremen Postfach 330 440 Germany
| | - Lutz Mädler
- Faculty of Production Engineering University of Bremen Badgasteiner Straße 1 28359 Bremen Germany
- Leibniz Institute for Materials Engineering IWT Badgasteiner Straße 3 28359 Bremen Germany
- MAPEX Center for Materials and Processes University of Bremen Postfach 330 440 Germany
| |
Collapse
|
13
|
Li H, Erinmwingbovo C, Birkenstock J, Schowalter M, Rosenauer A, La Mantia F, Mädler L, Pokhrel S. Double Flame-Fabricated High-Performance AlPO 4/LiMn 2O 4 Cathode Material for Li-Ion Batteries. ACS Appl Energy Mater 2021; 4:4428-4443. [PMID: 34060544 PMCID: PMC8157533 DOI: 10.1021/acsaem.1c00024] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 04/06/2021] [Indexed: 06/02/2023]
Abstract
The spinel LiMn2O4 (LMO) is a promising cathode material for rechargeable Li-ion batteries due to its excellent properties, including cost effectiveness, eco-friendliness, high energy density, and rate capability. The commercial application of LiMn2O4 is limited by its fast capacity fading during cycling, which lowers the electrochemical performance. In the present work, phase-pure and crystalline LiMn2O4 spinel in the nanoscale were synthesized using single flame spray pyrolysis via screening 16 different precursor-solvent combinations. To overcome the drawback of capacity fading, LiMn2O4 was homogeneously mixed with different percentages of AlPO4 using versatile multiple flame sprays. The mixing was realized by producing AlPO4 and LiMn2O4 aerosol streams in two independent flames placed at 20° to the vertical axis. The structural and morphological analyses by X-ray diffraction indicated the formation of a pure LMO phase and/or AlPO4-mixed LiMn2O4. Electrochemical analysis indicated that LMO nanoparticles of 17.8 nm (d BET) had the best electrochemical performance among the pure LMOs with an initial capacity and a capacity retention of 111.4 mA h g-1 and 88% after 100 cycles, respectively. A further increase in the capacity retention to 93% and an outstanding initial capacity of 116.1 mA h g-1 were acquired for 1% AlPO4.
Collapse
Affiliation(s)
- Haipeng Li
- Faculty
of Production Engineering, University of
Bremen, Badgasteiner Str. 1, 28359 Bremen, Germany
- Leibniz
Institute for Materials Engineering IWT, Badgasteiner Str. 3, 28359 Bremen, Germany
| | - Collins Erinmwingbovo
- Energiespeicher-
und Energiewandlersysteme, Universität
Bremen, Bibliothekstr.
1, 28325 Bremen, Germany
| | - Johannes Birkenstock
- Central
Laboratory for Crystallography and Applied Materials, University of Bremen, 28359 Bremen, Germany
| | - Marco Schowalter
- Institute
of Solid State Physics, University of Bremen, Otto-Hahn-Allee 1, 28359 Bremen, Germany
| | - Andreas Rosenauer
- Institute
of Solid State Physics, University of Bremen, Otto-Hahn-Allee 1, 28359 Bremen, Germany
| | - Fabio La Mantia
- Energiespeicher-
und Energiewandlersysteme, Universität
Bremen, Bibliothekstr.
1, 28325 Bremen, Germany
| | - Lutz Mädler
- Faculty
of Production Engineering, University of
Bremen, Badgasteiner Str. 1, 28359 Bremen, Germany
- Leibniz
Institute for Materials Engineering IWT, Badgasteiner Str. 3, 28359 Bremen, Germany
| | - Suman Pokhrel
- Faculty
of Production Engineering, University of
Bremen, Badgasteiner Str. 1, 28359 Bremen, Germany
- Leibniz
Institute for Materials Engineering IWT, Badgasteiner Str. 3, 28359 Bremen, Germany
- Central
Laboratory for Crystallography and Applied Materials, University of Bremen, 28359 Bremen, Germany
| |
Collapse
|
14
|
Schalk M, Pokhrel S, Schowalter M, Rosenauer A, Mädler L. Control of Porous Layer Thickness in Thermophoretic Deposition of Nanoparticles. Materials (Basel) 2021; 14:2395. [PMID: 34064513 PMCID: PMC8124515 DOI: 10.3390/ma14092395] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 03/15/2021] [Revised: 04/30/2021] [Accepted: 05/01/2021] [Indexed: 11/16/2022]
Abstract
The film thickness plays an important role in the performance of materials applicable to different technologies including chemical sensors, catalysis and/or energy materials. The relationship between the surface and volume of the functional layers is key to high performance evaluations. Here we demonstrate the thermophoretic deposition of different thicknesses of the functional layers designed using flame combustion of tin 2-ethylhexanoate dissolved in xylene, and measurement of thickness by scanning electron microscopy and focused ion beam. The parameters such as spray fluid concentration (differing Sn2+ content), substrate-nozzle distance and time of the spray were considered to investigate the layer growth. The results showed ≈ 23, 124 and 161 μm thickness of the SnO2 layer after flame spray of 0.1, 0.5 M and 1.0 M tin 2-EHA-Xylene solutions for 1200 s. While Sn2+ concentration was 0.5 M for all the flame sprays, the substrates placed at 250, 220 and 200 mm from the flame nozzle had layer thicknesses of 113, 116 and 132 µm, respectively. Spray time dependent thickness growth showed a linear increase from 8.5 to 152.1 µm when the substrates were flame sprayed for 30 s to 1200 s using 0.5 M tin 2-EHA-Xylene solutions. Changing the dispersion oxygen flow (3-7 L/min) had almost no effect on layer thickness. Layers fabricated were compared to a model found in literature, which seems to describe the thickness well in the domain of varied parameters. It turned out that primary particle size deposited on the substrate can be tuned without altering the layer thickness and with little effect on porosity. Applications depending on porosity, such as catalysis or gas sensing, can benefit from tuning the layer thickness and primary particle size.
Collapse
Affiliation(s)
- Malte Schalk
- Faculty of Production Engineering, University of Bremen, 28359 Bremen, Germany; (M.S.); (S.P.)
- Leibniz Institute for Materials Engineering IWT, 28359 Bremen, Germany
| | - Suman Pokhrel
- Faculty of Production Engineering, University of Bremen, 28359 Bremen, Germany; (M.S.); (S.P.)
- Leibniz Institute for Materials Engineering IWT, 28359 Bremen, Germany
| | - Marco Schowalter
- Institute of Solid State Physics, University of Bremen, 28359 Bremen, Germany; (M.S.); (A.R.)
| | - Andreas Rosenauer
- Institute of Solid State Physics, University of Bremen, 28359 Bremen, Germany; (M.S.); (A.R.)
| | - Lutz Mädler
- Faculty of Production Engineering, University of Bremen, 28359 Bremen, Germany; (M.S.); (S.P.)
- Leibniz Institute for Materials Engineering IWT, 28359 Bremen, Germany
| |
Collapse
|
15
|
Abstract
Fascination with and the need for evermore increasing efficiency, power, or strength have been the cornerstones for developing new materials and methods for their creation. Higher solar cell conversion efficiencies, increased battery storage power, and lightweight strong materials are some that have been at the forefront of attention for these efforts. Materials created for most applications start as simple chemical compounds. A study of how these chemicals have been used in the past can be used to create new materials and new methods of production. Herein, a class of materials that are valuable in a multitude of applications, metal sulfide nanoparticles, are examined, along with how they are being produced and how new methods can be established that will help to standardize and increase production capabilities. Precursor–solvent combinations that can be used to create metal sulfide nanoparticles in the gas phase are also explored.
Collapse
Affiliation(s)
- Adithya Balakrishnan
- Faculty of Production Engineering, University of Bremen, Badgasteiner Str. 1.,Leibniz Institute for Materials Engineering IWT, Badgasteiner Str. 3, 28359, Bremen, Germany
| | - Jan Derk Groeneveld
- Faculty of Production Engineering, University of Bremen, Badgasteiner Str. 1.,Leibniz Institute for Materials Engineering IWT, Badgasteiner Str. 3, 28359, Bremen, Germany
| | - Suman Pokhrel
- Faculty of Production Engineering, University of Bremen, Badgasteiner Str. 1.,Leibniz Institute for Materials Engineering IWT, Badgasteiner Str. 3, 28359, Bremen, Germany
| | - Lutz Mädler
- Faculty of Production Engineering, University of Bremen, Badgasteiner Str. 1.,Leibniz Institute for Materials Engineering IWT, Badgasteiner Str. 3, 28359, Bremen, Germany
| |
Collapse
|
16
|
Balakrishnan A, Groeneveld JD, Pokhrel S, Mädler L. Frontispiece: Metal Sulfide Nanoparticles: Precursor Chemistry. Chemistry 2021. [DOI: 10.1002/chem.202182162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Adithya Balakrishnan
- Faculty of Production Engineering University of Bremen Badgasteiner Str. 1
- Leibniz Institute for Materials Engineering IWT Badgasteiner Str. 3 28359 Bremen Germany
| | - Jan Derk Groeneveld
- Faculty of Production Engineering University of Bremen Badgasteiner Str. 1
- Leibniz Institute for Materials Engineering IWT Badgasteiner Str. 3 28359 Bremen Germany
| | - Suman Pokhrel
- Faculty of Production Engineering University of Bremen Badgasteiner Str. 1
- Leibniz Institute for Materials Engineering IWT Badgasteiner Str. 3 28359 Bremen Germany
| | - Lutz Mädler
- Faculty of Production Engineering University of Bremen Badgasteiner Str. 1
- Leibniz Institute for Materials Engineering IWT Badgasteiner Str. 3 28359 Bremen Germany
| |
Collapse
|
17
|
Swapnasrita S, Albinsson D, Pesch GR, Ström H, Langhammer C, Mädler L. Unravelling CO oxidation reaction kinetics on single Pd nanoparticles in nanoconfinement using a nanofluidic reactor and DSMC simulations. Chemical Engineering Science: X 2021. [DOI: 10.1016/j.cesx.2021.100088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
|
18
|
Pokhrel S, Mädler L. Flame-made Particles for Sensors, Catalysis, and Energy Storage Applications. Energy Fuels 2020; 34:13209-13224. [PMID: 33343081 PMCID: PMC7743895 DOI: 10.1021/acs.energyfuels.0c02220] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 08/25/2020] [Indexed: 05/15/2023]
Abstract
Flame spray pyrolysis of precursor-solvent combinations with high enthalpy density allows the design of functional nanoscale materials. Within the last two decades, flame spray pyrolysis was utilized to produce more than 500 metal oxide particulate materials for R&D and commercial applications. In this short review, the particle formation mechanism is described based on the micro-explosions observed in single droplet experiments for various precursor-solvent combinations. While layer fabrication is a key to successful industrial applications toward gas sensors, catalysis, and energy storage, the state-of-the-art technology of innovative in situ thermophoretic particle production and deposition technology is described. In addition, noble metal stabilized oxide matrices with tight chemical contact catalyze surface reactions for enhanced catalytic performance. The metal-support interaction that is vital for redox catalytic performance for various surface reactions is presented.
Collapse
Affiliation(s)
- Suman Pokhrel
- Faculty
of Production Engineering, University of
Bremen, Badgasteiner Strasse 1, 28359 Bremen, Germany
- Leibniz
Institute for Materials Engineering IWT, Badgasteiner Strasse 3, 28359 Bremen, Germany
| | - Lutz Mädler
- Faculty
of Production Engineering, University of
Bremen, Badgasteiner Strasse 1, 28359 Bremen, Germany
- Leibniz
Institute for Materials Engineering IWT, Badgasteiner Strasse 3, 28359 Bremen, Germany
- Phone: +49
421 218-51200. Fax: +49 421 218-51211. E-mail:
| |
Collapse
|
19
|
Okulov IV, Joo SH, Okulov AV, Volegov AS, Luthringer B, Willumeit-Römer R, Zhang L, Mädler L, Eckert J, Kato H. Surface Functionalization of Biomedical Ti-6Al-7Nb Alloy by Liquid Metal Dealloying. Nanomaterials (Basel) 2020; 10:nano10081479. [PMID: 32731588 PMCID: PMC7466585 DOI: 10.3390/nano10081479] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [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: 06/24/2020] [Revised: 07/16/2020] [Accepted: 07/16/2020] [Indexed: 01/08/2023]
Abstract
Surface functionalization is an effective approach to change the surface properties of a material to achieve a specific goal such as improving the biocompatibility of the material. Here, the surface of the commercial biomedical Ti-6Al-7Nb alloy was functionalized through synthesizing of a porous surface layer by liquid metal dealloying (LMD). During LMD, the Ti-6Al-7Nb alloy is immersed in liquid magnesium (Mg) and both materials react with each other. Particularly, aluminum (Al) is selectively dissolved from the Ti-6Al-7Nb alloy into liquid Mg while titanium (Ti) and niobium (Nb) diffuse along the metal/liquid interface to form a porous structure. We demonstrate that the porous surface layer in the Ti-6Al-7Nb alloy can be successfully tailored by LMD. Furthermore, the concentration of harmful Al in this porous layer is reduced by about 48% (from 5.62 ± 0.11 wt.% to 2.95 ± 0.05 wt.%) after 30 min of dealloying at 1150 K. The properties of the porous layer (e.g., layer thickness) can be tuned by varying the dealloying conditions. In-vitro tests suggest improved bone formation on the functionalized porous surface of the Ti-6Al-7Nb alloy.
Collapse
Affiliation(s)
- Ilya Vladimirovich Okulov
- Institute for Materials Research, Tohoku University, Katahira 2-1-1, Sendai 980-8577, Japan; (S.-H.J.); (H.K.)
- University of Bremen, Badgasteiner Str. 1, 28359 Bremen, Germany;
- Leibniz Institute for Materials Engineering—IWT, Badgasteiner Str. 3, 28359 Bremen, Germany
- Institute of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russia;
- Correspondence:
| | - Soo-Hyun Joo
- Institute for Materials Research, Tohoku University, Katahira 2-1-1, Sendai 980-8577, Japan; (S.-H.J.); (H.K.)
| | - Artem Vladimirovich Okulov
- Helmholtz-Zentrum Geesthacht, Institute of Materials Research, Division of Materials Mechanics, 21502 Geesthacht, Germany;
| | - Alexey Sergeevich Volegov
- Institute of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russia;
| | - Bérengère Luthringer
- Helmholtz-Zentrum Geesthacht, Institute of Material Research, Division of Metallic Biomaterials, 21502 Geesthacht, Germany; (B.L.); (R.W.-R.)
| | - Regine Willumeit-Römer
- Helmholtz-Zentrum Geesthacht, Institute of Material Research, Division of Metallic Biomaterials, 21502 Geesthacht, Germany; (B.L.); (R.W.-R.)
| | - Laichang Zhang
- School of Engineering, Edith Cowan University, 270 Joondalup Drive, Joondalup, Perth, WA 6027, Australia;
| | - Lutz Mädler
- University of Bremen, Badgasteiner Str. 1, 28359 Bremen, Germany;
- Leibniz Institute for Materials Engineering—IWT, Badgasteiner Str. 3, 28359 Bremen, Germany
| | - Jürgen Eckert
- Erich Schmid Instiute of Materials Physics, Austrian Academy of Sciences, Jahnstraße 12, 8700 Leoben, Austria;
- Department of Materials Science, Chair of Materials Physics, Montanuniversität Leoben, Jahnstraße 12, 8700 Leoben, Austria
| | - Hidemi Kato
- Institute for Materials Research, Tohoku University, Katahira 2-1-1, Sendai 980-8577, Japan; (S.-H.J.); (H.K.)
| |
Collapse
|
20
|
Li H, Pokhrel S, Schowalter M, Rosenauer A, Kiefer J, Mädler L. The gas-phase formation of tin dioxide nanoparticles in single droplet combustion and flame spray pyrolysis. Combust Flame 2020; 215:389-400. [PMID: 32903291 PMCID: PMC7116032 DOI: 10.1016/j.combustflame.2020.02.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Tin dioxide (SnO2) nanoparticles synthesized via flame spray pyrolysis (FSP) have promising applications for gas sensors. The formation of SnO2 nanoparticles in the gas-phase has been investigated using single droplet combustion and FSP. Precursor solutions of Tin (II) 2-ethylhexanoate dissolved in Xylene with varying Sn concentrations were selected as the precursor-solvent system. The selected precursor-solvent system has its stability and ability to synthesize homogeneous nanoparticles, compared to metal nitrate based precursor solutions. The precursor-solvent system was studied using attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy and thermogravimetric analysis (TGA). The SnO2 nanoparticles were characterized using X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), and transmission electron microscopy (TEM). Droplet surface micro-explosions were observed during the single droplet combustion of the precursor solutions. It is because of the heterogeneous vapor-phase nucleation, which is beneath the liquid droplet surface and caused by precursor thermal decomposition. The results show that the size of nanoparticles obtained both from FSP and single droplet combustion increases with increasing metal-precursor concentration. The TEM images of the particles from such droplet combustion reveal two types of nanoparticles with different sizes and morphologies. The current work provides fundamental understanding of precursor decomposition and particle formation during single droplet combustion, which help in-depth understanding of the flame spray pyrolysis.
Collapse
Affiliation(s)
- Haipeng Li
- Faculty of Production Engineering, University of Bremen, Badgasteiner Straße 1, 28359 Bremen, Germany
- Leibniz Institute for Materials Engineering IWT, Badgasteiner Straße 3, 28359 Bremen, Germany
| | - Suman Pokhrel
- Faculty of Production Engineering, University of Bremen, Badgasteiner Straße 1, 28359 Bremen, Germany
- Leibniz Institute for Materials Engineering IWT, Badgasteiner Straße 3, 28359 Bremen, Germany
| | - Marco Schowalter
- Institute of Solid State Physics, Electron Microscopy, University of Bremen, 28359 Bremen, Germany
| | - Andreas Rosenauer
- Institute of Solid State Physics, Electron Microscopy, University of Bremen, 28359 Bremen, Germany
| | - Johannes Kiefer
- Faculty of Production Engineering, University of Bremen, Badgasteiner Straße 1, 28359 Bremen, Germany
- Technische Thermodynamik, University of Bremen, Badgasteiner Straße 1, 28359 Bremen, Germany
| | - Lutz Mädler
- Faculty of Production Engineering, University of Bremen, Badgasteiner Straße 1, 28359 Bremen, Germany
- Leibniz Institute for Materials Engineering IWT, Badgasteiner Straße 3, 28359 Bremen, Germany
- Corresponding author at: Faculty of Production Engineering, University of Bremen, Leibniz Institute for Materials Engineering IWT, Badgasteiner Straße 3, 28359, Bremen, Germany. (L. Mädler)
| |
Collapse
|
21
|
Peng G, He Y, Wang X, Cheng Y, Zhang H, Savolainen K, Mädler L, Pokhrel S, Lin S. Redox Activity and Nano-Bio Interactions Determine the Skin Injury Potential of Co 3O 4-Based Metal Oxide Nanoparticles toward Zebrafish. ACS Nano 2020; 14:4166-4177. [PMID: 32191835 DOI: 10.1021/acsnano.9b08938] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Redox-active metal oxide nanoparticles show varying oxidizing capacities and injury potentials toward biological systems. Here, two metal oxide libraries including transition-metal-doped Co3O4 and PdO-Co3O4 with strong chemical contacts were design-synthesized and used to investigate their biological injury potential and mechanisms using zebrafish as a model organism. Among different dopants, Cu significantly increased the oxidizing capacity of Co3O4. An increased amount of PdO resulted in higher density of heterojunctions, which also led to higher oxidizing capacity. The oxidizing capacity of these nanoparticles was positively correlated with higher mortality of dechorionated embryos and severe larval skin injury upon exposure. Using transgenic zebrafish Tg(LysC:eGFP), we show in real time that the redox-active nanoparticles induced skin injury and activated the infiltration of immune cells. Such inflammatory response was confirmed by the increased mRNA expression level of Nrf2a, HO-1, IL-1β, and IL-6 genes. Although the exposure to the nanoparticles alone was not lethal, the skin injury did lower the tolerance level against other environmental contaminants. More importantly, after withdrawing from the nanoparticle exposure, larvae with skin injury could recover within 24 h in uncontaminated medium, indicating such injury was transient and recoverable.
Collapse
Affiliation(s)
- Guotao Peng
- College of Environmental Science and Engineering, Biomedical Multidisciplinary Innovation Research Institute, Shanghai East Hospital, Tongji University, Shanghai 200092, China
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Yuan He
- College of Environmental Science and Engineering, Biomedical Multidisciplinary Innovation Research Institute, Shanghai East Hospital, Tongji University, Shanghai 200092, China
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Xiaoxiao Wang
- College of Environmental Science and Engineering, Biomedical Multidisciplinary Innovation Research Institute, Shanghai East Hospital, Tongji University, Shanghai 200092, China
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Yan Cheng
- Laboratory of Chemical Biology, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
| | - Haiyuan Zhang
- Laboratory of Chemical Biology, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
| | - Kai Savolainen
- Finnish Institute of Occupational Health, Helsinki 00250, Finland
| | - Lutz Mädler
- Faculty of Production Engineering, University of Bremen, 28359 Bremen, Germany
- Leibniz Institute for Materials Engineering IWT, 28359 Bremen, Germany
| | - Suman Pokhrel
- Faculty of Production Engineering, University of Bremen, 28359 Bremen, Germany
- Leibniz Institute for Materials Engineering IWT, 28359 Bremen, Germany
| | - Sijie Lin
- College of Environmental Science and Engineering, Biomedical Multidisciplinary Innovation Research Institute, Shanghai East Hospital, Tongji University, Shanghai 200092, China
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| |
Collapse
|
22
|
Naatz H, Manshian BB, Rios Luci C, Tsikourkitoudi V, Deligiannakis Y, Birkenstock J, Pokhrel S, Mädler L, Soenen SJ. Inside Back Cover: Model‐Based Nanoengineered Pharmacokinetics of Iron‐Doped Copper Oxide for Nanomedical Applications (Angew. Chem. Int. Ed. 5/2020). Angew Chem Int Ed Engl 2020. [DOI: 10.1002/anie.201916183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hendrik Naatz
- University of BremenFaculty of Production Engineering Badgasteiner Str. 1 28359 Bremen Germany
- Leibniz Institute for Materials Engineering IWT Badgasteiner Str. 3 28359 Bremen Germany
| | - Bella B. Manshian
- NanoHealth and Optical Imaging GroupKU LeuvenDepartment of Imaging and Pathology Belgium
- Molecular Small Animal Imaging CenterKU Leuven Herestraat 49 B3000 Leuven Belgium
| | - Carla Rios Luci
- NanoHealth and Optical Imaging GroupKU LeuvenDepartment of Imaging and Pathology Belgium
- Molecular Small Animal Imaging CenterKU Leuven Herestraat 49 B3000 Leuven Belgium
| | - Vasiliki Tsikourkitoudi
- University of IoanninaDepartment of Physics Panepistimioupoli Douroutis 445110 Ioannina Greece
| | - Yiannis Deligiannakis
- University of IoanninaDepartment of Physics Panepistimioupoli Douroutis 445110 Ioannina Greece
| | - Johannes Birkenstock
- Central Laboratory for Crystallography and Applied MaterialsUniversity of Bremen 28359 Bremen Germany
| | - Suman Pokhrel
- University of BremenFaculty of Production Engineering Badgasteiner Str. 1 28359 Bremen Germany
- Leibniz Institute for Materials Engineering IWT Badgasteiner Str. 3 28359 Bremen Germany
| | - Lutz Mädler
- University of BremenFaculty of Production Engineering Badgasteiner Str. 1 28359 Bremen Germany
- Leibniz Institute for Materials Engineering IWT Badgasteiner Str. 3 28359 Bremen Germany
| | - Stefaan J. Soenen
- NanoHealth and Optical Imaging GroupKU LeuvenDepartment of Imaging and Pathology Belgium
- Molecular Small Animal Imaging CenterKU Leuven Herestraat 49 B3000 Leuven Belgium
| |
Collapse
|
23
|
Naatz H, Manshian BB, Rios Luci C, Tsikourkitoudi V, Deligiannakis Y, Birkenstock J, Pokhrel S, Mädler L, Soenen SJ. Model-Based Nanoengineered Pharmacokinetics of Iron-Doped Copper Oxide for Nanomedical Applications. Angew Chem Int Ed Engl 2020; 59:1828-1836. [PMID: 31755189 PMCID: PMC7004194 DOI: 10.1002/anie.201912312] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Indexed: 01/18/2023]
Abstract
The progress in nanomedicine (NM) using nanoparticles (NPs) is mainly based on drug carriers for the delivery of classical chemotherapeutics. As low NM delivery rates limit therapeutic efficacy, an entirely different approach was investigated. A homologous series of engineered CuO NPs was designed for dual purposes (carrier and drug) with a direct chemical composition-biological functionality relationship. Model-based dissolution kinetics of CuO NPs in the cellular interior at post-exposure conditions were controlled through Fe-doping for intra/extra cellular Cu2+ and biological outcome. Through controlled ion release and reactions taking place in the cellular interior, tumors could be treated selectively, in vitro and in vivo. Locally administered NPs enabled tumor cells apoptosis and stimulated systemic anti-cancer immune responses. We clearly show therapeutic effects without tumor cells relapse post-treatment with 6 % Fe-doped CuO NPs combined with myeloid-derived suppressor cell silencing.
Collapse
Affiliation(s)
- Hendrik Naatz
- University of BremenFaculty of Production EngineeringBadgasteiner Str. 128359BremenGermany
- Leibniz Institute for Materials Engineering IWTBadgasteiner Str. 328359BremenGermany
| | - Bella B. Manshian
- NanoHealth and Optical Imaging GroupKU LeuvenDepartment of Imaging and PathologyBelgium
- Molecular Small Animal Imaging CenterKU LeuvenHerestraat 49B3000LeuvenBelgium
| | - Carla Rios Luci
- NanoHealth and Optical Imaging GroupKU LeuvenDepartment of Imaging and PathologyBelgium
- Molecular Small Animal Imaging CenterKU LeuvenHerestraat 49B3000LeuvenBelgium
| | | | - Yiannis Deligiannakis
- University of IoanninaDepartment of PhysicsPanepistimioupoli Douroutis445110IoanninaGreece
| | - Johannes Birkenstock
- Central Laboratory for Crystallography and Applied MaterialsUniversity of Bremen28359BremenGermany
| | - Suman Pokhrel
- University of BremenFaculty of Production EngineeringBadgasteiner Str. 128359BremenGermany
- Leibniz Institute for Materials Engineering IWTBadgasteiner Str. 328359BremenGermany
| | - Lutz Mädler
- University of BremenFaculty of Production EngineeringBadgasteiner Str. 128359BremenGermany
- Leibniz Institute for Materials Engineering IWTBadgasteiner Str. 328359BremenGermany
| | - Stefaan J. Soenen
- NanoHealth and Optical Imaging GroupKU LeuvenDepartment of Imaging and PathologyBelgium
- Molecular Small Animal Imaging CenterKU LeuvenHerestraat 49B3000LeuvenBelgium
| |
Collapse
|
24
|
Naatz H, Manshian BB, Rios Luci C, Tsikourkitoudi V, Deligiannakis Y, Birkenstock J, Pokhrel S, Mädler L, Soenen SJ. Innenrücktitelbild: Model‐Based Nanoengineered Pharmacokinetics of Iron‐Doped Copper Oxide for Nanomedical Applications (Angew. Chem. 5/2020). Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Hendrik Naatz
- University of BremenFaculty of Production Engineering Badgasteiner Str. 1 28359 Bremen Germany
- Leibniz Institute for Materials Engineering IWT Badgasteiner Str. 3 28359 Bremen Germany
| | - Bella B. Manshian
- NanoHealth and Optical Imaging GroupKU LeuvenDepartment of Imaging and Pathology Belgium
- Molecular Small Animal Imaging CenterKU Leuven Herestraat 49 B3000 Leuven Belgium
| | - Carla Rios Luci
- NanoHealth and Optical Imaging GroupKU LeuvenDepartment of Imaging and Pathology Belgium
- Molecular Small Animal Imaging CenterKU Leuven Herestraat 49 B3000 Leuven Belgium
| | - Vasiliki Tsikourkitoudi
- University of IoanninaDepartment of Physics Panepistimioupoli Douroutis 445110 Ioannina Greece
| | - Yiannis Deligiannakis
- University of IoanninaDepartment of Physics Panepistimioupoli Douroutis 445110 Ioannina Greece
| | - Johannes Birkenstock
- Central Laboratory for Crystallography and Applied MaterialsUniversity of Bremen 28359 Bremen Germany
| | - Suman Pokhrel
- University of BremenFaculty of Production Engineering Badgasteiner Str. 1 28359 Bremen Germany
- Leibniz Institute for Materials Engineering IWT Badgasteiner Str. 3 28359 Bremen Germany
| | - Lutz Mädler
- University of BremenFaculty of Production Engineering Badgasteiner Str. 1 28359 Bremen Germany
- Leibniz Institute for Materials Engineering IWT Badgasteiner Str. 3 28359 Bremen Germany
| | - Stefaan J. Soenen
- NanoHealth and Optical Imaging GroupKU LeuvenDepartment of Imaging and Pathology Belgium
- Molecular Small Animal Imaging CenterKU Leuven Herestraat 49 B3000 Leuven Belgium
| |
Collapse
|
25
|
Naatz H, Manshian BB, Rios Luci C, Tsikourkitoudi V, Deligiannakis Y, Birkenstock J, Pokhrel S, Mädler L, Soenen SJ. Model‐Based Nanoengineered Pharmacokinetics of Iron‐Doped Copper Oxide for Nanomedical Applications. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201912312] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Hendrik Naatz
- University of BremenFaculty of Production Engineering Badgasteiner Str. 1 28359 Bremen Germany
- Leibniz Institute for Materials Engineering IWT Badgasteiner Str. 3 28359 Bremen Germany
| | - Bella B. Manshian
- NanoHealth and Optical Imaging GroupKU LeuvenDepartment of Imaging and Pathology Belgium
- Molecular Small Animal Imaging CenterKU Leuven Herestraat 49 B3000 Leuven Belgium
| | - Carla Rios Luci
- NanoHealth and Optical Imaging GroupKU LeuvenDepartment of Imaging and Pathology Belgium
- Molecular Small Animal Imaging CenterKU Leuven Herestraat 49 B3000 Leuven Belgium
| | - Vasiliki Tsikourkitoudi
- University of IoanninaDepartment of Physics Panepistimioupoli Douroutis 445110 Ioannina Greece
| | - Yiannis Deligiannakis
- University of IoanninaDepartment of Physics Panepistimioupoli Douroutis 445110 Ioannina Greece
| | - Johannes Birkenstock
- Central Laboratory for Crystallography and Applied MaterialsUniversity of Bremen 28359 Bremen Germany
| | - Suman Pokhrel
- University of BremenFaculty of Production Engineering Badgasteiner Str. 1 28359 Bremen Germany
- Leibniz Institute for Materials Engineering IWT Badgasteiner Str. 3 28359 Bremen Germany
| | - Lutz Mädler
- University of BremenFaculty of Production Engineering Badgasteiner Str. 1 28359 Bremen Germany
- Leibniz Institute for Materials Engineering IWT Badgasteiner Str. 3 28359 Bremen Germany
| | - Stefaan J. Soenen
- NanoHealth and Optical Imaging GroupKU LeuvenDepartment of Imaging and Pathology Belgium
- Molecular Small Animal Imaging CenterKU Leuven Herestraat 49 B3000 Leuven Belgium
| |
Collapse
|
26
|
Meierhofer F, Mädler L, Fritsching U. Nanoparticle evolution in flame spray pyrolysis—Process design via experimental and computational analysis. AIChE J 2019. [DOI: 10.1002/aic.16885] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Florian Meierhofer
- Leibniz Institute for Materials Engineering IWT Bremen Germany
- Faculty of Production Engineering University of Bremen Bremen Germany
- Laboratory for Emerging Nanometrology (LENA), Braunschweig University of Technology Braunschweig Germany
- Institute of Semiconductor Technology (IHT), Braunschweig University of Technology Braunschweig Germany
| | - Lutz Mädler
- Leibniz Institute for Materials Engineering IWT Bremen Germany
- Faculty of Production Engineering University of Bremen Bremen Germany
- MAPEX Center for Materials and Processes University of Bremen Bremen Germany
| | - Udo Fritsching
- Leibniz Institute for Materials Engineering IWT Bremen Germany
- Faculty of Production Engineering University of Bremen Bremen Germany
- MAPEX Center for Materials and Processes University of Bremen Bremen Germany
| |
Collapse
|
27
|
Imani Moqadam S, Mädler L, Ellendt N. Microstructure Adjustment of Spherical Micro-samples for High-Throughput Analysis Using a Drop-on-Demand Droplet Generator. Materials (Basel) 2019; 12:ma12223769. [PMID: 31744131 PMCID: PMC6888193 DOI: 10.3390/ma12223769] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 11/12/2019] [Accepted: 11/13/2019] [Indexed: 05/08/2023]
Abstract
: High-throughput methods for the development of structural materials require samples which are comparable in geometric dimensions and microstructure. Molten metal droplet generators produce thousands of droplets and microspheres from specific alloys with very good reproducibility. In this study, droplet generation experiments were conducted with two alloys and their microstructure was analyzed regarding secondary dendrite arm spacing (SDAS) in order to determine cooling rates during solidification. A droplet cooling model was developed, and predictions showed good agreement with the experimental data. Finally, a sensitivity study was conducted using the validated model to identify critical process parameters which have great impact on the resulting microstructure and need to be well-controlled to achieve the desired reproducibility in microstructure.
Collapse
Affiliation(s)
- Saeedeh Imani Moqadam
- Faculty of Production Engineering, University of Bremen, Badgasteiner Straße 1, 28359 Bremen, Germany; (S.I.M.); (L.M.)
- Leibniz Institute for Materials Engineering IWT, Badgasteiner Straße 3, 28359 Bremen, Germany
| | - Lutz Mädler
- Faculty of Production Engineering, University of Bremen, Badgasteiner Straße 1, 28359 Bremen, Germany; (S.I.M.); (L.M.)
- Leibniz Institute for Materials Engineering IWT, Badgasteiner Straße 3, 28359 Bremen, Germany
| | - Nils Ellendt
- Faculty of Production Engineering, University of Bremen, Badgasteiner Straße 1, 28359 Bremen, Germany; (S.I.M.); (L.M.)
- Leibniz Institute for Materials Engineering IWT, Badgasteiner Straße 3, 28359 Bremen, Germany
- Correspondence: ; Tel.: +49-421-218-64519
| |
Collapse
|
28
|
Lovell EC, Großman H, Horlyck J, Scott J, Mädler L, Amal R. Asymmetrical Double Flame Spray Pyrolysis-Designed SiO 2/Ce 0.7Zr 0.3O 2 for the Dry Reforming of Methane. ACS Appl Mater Interfaces 2019; 11:25766-25777. [PMID: 31260247 DOI: 10.1021/acsami.9b02572] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Silica has the potential to enhance the performance of ceria-zirconia as a support for the dry reforming of methane; however, controlling the integration of silica with the ceria-zirconia using flame spray pyrolysis (FSP) is a significant challenge. To address this challenge, an asymmetrically variable double-FSP (DFSP) system was established to control the SiO2 interaction with Ce0.7Zr0.3O2. The engineered materials were then utilized as supports for Ni for the dry reforming of methane. Initially, silica formation during FSP synthesis was examined where it was revealed that, at a low precursor concentration (<1.5 M tetraethyl orthosilicate in xylenes), the physical characteristics of the silica varied differently in relation to what is typically encountered during FSP synthesis. Explicitly, on using a 0.5 M tetraethyl orthosilicate precursor, increasing the FSP feed rate provided an increase in the specific surface area from 217 m2/g at 3 mL/min to 363 m2/g at 7 mL/min. Adopting this knowledge on silica formation under these conditions, the asymmetrical DFSP system was then exploited to regulate the integration of ceria-zirconia with the silica. To restrict the silica from coating the particles during DFSP, the intersection distance along the silica flame was tuned from 18.5 to 28.5 cm, whereas the distance along the ceria-zirconia flame was fixed at 5 cm. It was found that at short intersection distances the ceria-zirconia provided sites for silica nucleation and growth, resulting in high surface-area silica encapsulating the ceria-zirconia. At large intersection distances, encapsulation of the ceria-zirconia by silica was suppressed. An enhanced oxygen storage capacity and basicity along with the small Ni sizes facilitated by the longer intersection distances produced the most selective catalyst for the dry reforming of methane.
Collapse
Affiliation(s)
- Emma C Lovell
- Particles and Catalysis Group, School of Chemical Engineering , The University of New South Wales , Sydney , NSW 2052 , Australia
| | - Henrike Großman
- Faculty of Production Engineering , University of Bremen , Badgasteiner Str. 1 , 28359 Bremen , Germany
- Leibniz Institute for Materials Engineering IWT , Badgasteiner Str. 3 , 28359 Bremen , Germany
| | - Jonathan Horlyck
- Particles and Catalysis Group, School of Chemical Engineering , The University of New South Wales , Sydney , NSW 2052 , Australia
| | - Jason Scott
- Particles and Catalysis Group, School of Chemical Engineering , The University of New South Wales , Sydney , NSW 2052 , Australia
| | - Lutz Mädler
- Faculty of Production Engineering , University of Bremen , Badgasteiner Str. 1 , 28359 Bremen , Germany
- Leibniz Institute for Materials Engineering IWT , Badgasteiner Str. 3 , 28359 Bremen , Germany
| | - Rose Amal
- Particles and Catalysis Group, School of Chemical Engineering , The University of New South Wales , Sydney , NSW 2052 , Australia
| |
Collapse
|
29
|
Imani Moqadam S, Mädler L, Ellendt N. A High Temperature Drop-On-Demand Droplet Generator for Metallic Melts. Micromachines (Basel) 2019; 10:mi10070477. [PMID: 31319453 PMCID: PMC6680520 DOI: 10.3390/mi10070477] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [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: 06/20/2019] [Revised: 07/05/2019] [Accepted: 07/11/2019] [Indexed: 11/16/2022]
Abstract
In this study we present the design and functionality of a pneumatic drop-on-demand droplet generator that produces metallic micro particles with a size range of 300 µm to 1350 µm at high temperatures of up to 1600 °C. Molten metal droplets were generated from an EN 1.3505 (AISI 52100) steel which solidified during a falling distance of 6.5 m. We analyzed the resulting particle size and morphology using static image analysis. Furthermore, the droplet formation mode was analyzed using high-speed recordings and the pressure oscillation was measured in the crucible. The system is meant to be reproducible in all aspects and therefore the in-situ measurements are set to control the droplet size and trajectory during the run. Additionally, the ex-situ measurements are done on the particles in order to characterize them in size and morphology aspects.
Collapse
Affiliation(s)
- Saeedeh Imani Moqadam
- Faculty of Production Engineering, University of Bremen, Badgasteiner Straße 1, 28359 Bremen, Germany
- Leibniz Institute for Materials Engineering IWT, Badgasteiner Straße 3, 28359 Bremen, Germany
| | - Lutz Mädler
- Faculty of Production Engineering, University of Bremen, Badgasteiner Straße 1, 28359 Bremen, Germany
- Leibniz Institute for Materials Engineering IWT, Badgasteiner Straße 3, 28359 Bremen, Germany
| | - Nils Ellendt
- Faculty of Production Engineering, University of Bremen, Badgasteiner Straße 1, 28359 Bremen, Germany.
- Leibniz Institute for Materials Engineering IWT, Badgasteiner Straße 3, 28359 Bremen, Germany.
| |
Collapse
|
30
|
Horlyck J, Pokhrel S, Lovell E, Bedford NM, Mädler L, Amal R, Scott J. Unifying double flame spray pyrolysis with lanthanum doping to restrict cobalt–aluminate formation in Co/Al 2O 3 catalysts for the dry reforming of methane. Catal Sci Technol 2019. [DOI: 10.1039/c9cy01293a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Atomic-sized lanthanum doping via double flame spray pyrolysis leads to remarkable dry reforming of methane performance.
Collapse
Affiliation(s)
- Jonathan Horlyck
- School of Chemical Engineering
- The University of New South Wales
- Sydney
- Australia
| | - Suman Pokhrel
- Faculty of Production Engineering
- University of Bremen
- 28359 Bremen
- Germany
- Leibniz Institute for Materials Engineering IWT
| | - Emma Lovell
- School of Chemical Engineering
- The University of New South Wales
- Sydney
- Australia
| | - Nicholas M. Bedford
- School of Chemical Engineering
- The University of New South Wales
- Sydney
- Australia
| | - Lutz Mädler
- Faculty of Production Engineering
- University of Bremen
- 28359 Bremen
- Germany
- Leibniz Institute for Materials Engineering IWT
| | - Rose Amal
- School of Chemical Engineering
- The University of New South Wales
- Sydney
- Australia
| | - Jason Scott
- School of Chemical Engineering
- The University of New South Wales
- Sydney
- Australia
| |
Collapse
|
31
|
|
32
|
Manshian BB, Pokhrel S, Mädler L, Soenen SJ. The impact of nanoparticle-driven lysosomal alkalinization on cellular functionality. J Nanobiotechnology 2018; 16:85. [PMID: 30382919 PMCID: PMC6208102 DOI: 10.1186/s12951-018-0413-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 10/25/2018] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND The biomedical use of nanosized materials is rapidly gaining interest, which drives the quest to elucidate the behavior of nanoparticles (NPs) in a biological environment. Apart from causing direct cell death, NPs can affect cellular wellbeing through a wide range of more subtle processes that are often overlooked. Here, we aimed to study the effect of two biomedically interesting NP types on cellular wellbeing. RESULTS In the present work, gold and SiO2 NPs of similar size and surface charge are used and their interactions with cultured cells is studied. Initial screening shows that at subcytotoxic conditions gold NPs induces cytoskeletal aberrations while SiO2 NPs do not. However, these transformations are only transient. In-depth investigation reveals that Au NPs reduce lysosomal activity by alkalinization of the lysosomal lumen. This leads to an accumulation of autophagosomes, resulting in a reduced cellular degradative capacity and less efficient clearance of damaged mitochondria. The autophagosome accumulation induces Rac and Cdc42 activity, and at a later stage activates RhoA. These transient cellular changes also affect cell functionality, where Au NP-labelled cells display significantly impeded cell migration and invasion. CONCLUSIONS These data highlight the importance of in-depth understanding of bio-nano interactions to elucidate how one biological parameter (impact on cellular degradation) can induce a cascade of different effects that may have significant implications on the further use of labeled cells.
Collapse
Affiliation(s)
- Bella B Manshian
- NanoHealth and Optical Imaging Group, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium.,Molecular Small Animal Imaging Center, KU Leuven, Leuven, Belgium
| | - Suman Pokhrel
- Foundation Institute of Materials Science (IWT), Department of Production Engineering, University of Bremen, 28359, Bremen, Germany.,Leibniz Institute for Materials Engineering IWT, Badgasteiner Str. 3, 28359, Bremen, Germany
| | - Lutz Mädler
- Foundation Institute of Materials Science (IWT), Department of Production Engineering, University of Bremen, 28359, Bremen, Germany.,Leibniz Institute for Materials Engineering IWT, Badgasteiner Str. 3, 28359, Bremen, Germany
| | - Stefaan J Soenen
- NanoHealth and Optical Imaging Group, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium. .,Molecular Small Animal Imaging Center, KU Leuven, Leuven, Belgium.
| |
Collapse
|
33
|
Baric V, Mädler L. Modellierung und Charakterisierung von Filterkuchen bestehend aus aggregierten Nanopartikeln. CHEM-ING-TECH 2018. [DOI: 10.1002/cite.201855179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- V. Baric
- Universität Bremen; Leibniz-Institut für Werkstofforientierte Technologien IWT, Mechanische Verfahrenstechnik; Badgasteiner Straße 3 28359 Bremen Deutschland
| | - L. Mädler
- Universität Bremen; Leibniz-Institut für Werkstofforientierte Technologien IWT, Mechanische Verfahrenstechnik; Badgasteiner Straße 3 28359 Bremen Deutschland
| |
Collapse
|
34
|
Naatz H, Hoffmann R, Hartwig A, La Mantia F, Pokhrel S, Mädler L. Verfahren zur Bestimmung des Flachbandpotenzials von Nanopartikeln in porösen Elektroden. CHEM-ING-TECH 2018. [DOI: 10.1002/cite.201855178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- H. Naatz
- Universität Bremen; Mechanische Verfahrenstechnik; Badgasteiner Straße 1 28359 Bremen Deutschland
- Leibniz-Institut für Werkstofforientierte Technologien; Badgasteiner Straße 3 28359 Bremen Deutschland
| | - R. Hoffmann
- Universität Bremen; Biologie/Chemie; Leobener Straße 3 28359 Bremen Deutschland
- Fraunhofer-Institut für Fertigungstechnik und Angewandte Materialforschung; Wiener Straße 12 28359 Bremen Deutschland
| | - A. Hartwig
- Universität Bremen; Biologie/Chemie; Leobener Straße 3 28359 Bremen Deutschland
- Fraunhofer-Institut für Fertigungstechnik und Angewandte Materialforschung; Wiener Straße 12 28359 Bremen Deutschland
| | - F. La Mantia
- Universität Bremen; Energiesysteme; Bibliothekstraße 1 28359 Bremen Deutschland
| | - S. Pokhrel
- Universität Bremen; Mechanische Verfahrenstechnik; Badgasteiner Straße 1 28359 Bremen Deutschland
- Leibniz-Institut für Werkstofforientierte Technologien; Badgasteiner Straße 3 28359 Bremen Deutschland
| | - L. Mädler
- Universität Bremen; Mechanische Verfahrenstechnik; Badgasteiner Straße 1 28359 Bremen Deutschland
- Leibniz-Institut für Werkstofforientierte Technologien; Badgasteiner Straße 3 28359 Bremen Deutschland
| |
Collapse
|
35
|
Zampardi G, Thöming J, Naatz H, Amin HMA, Pokhrel S, Mädler L, Compton RG. Electrochemical Behavior of Single CuO Nanoparticles: Implications for the Assessment of their Environmental Fate. Small 2018; 14:e1801765. [PMID: 30016009 DOI: 10.1002/smll.201801765] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 06/13/2018] [Indexed: 06/08/2023]
Abstract
The electrochemical behavior of copper oxide nanoparticles is investigated at both the single particle and at the ensemble level in neutral aqueous solutions through the electrode-particle collision method and cyclic voltammetry, respectively. The influence of Cl- and NO3- anions on the electrochemical processes occurring at the nanoparticles is further evaluated. The electroactivity of CuO nanoparticles is found to differ between the two types of experiments. At the single-particle scale, the reduction of the CuO nanoparticles proceeds to a higher extent in the presence of chloride ion than of nitrate ion containing solutions. However, at the multiparticle scale the CuO reduction proceeds to the same extent regardless of the type of anions present in solution. The implications for assessing realistically the environmental fate and therefore the toxicity of metal-based nanoparticles in general, and copper-based nanoparticles in particular, are discussed.
Collapse
Affiliation(s)
- Giorgia Zampardi
- Department of Chemistry, Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, OX1 3QZ, Oxford, UK
| | - Jorg Thöming
- Centre for Environmental Research and Sustainable Technology, University of Bremen, Leobener Str. 6, 28359, Bremen, Germany
- Faculty of Production Engineering, University of Bremen, Badgasteiner Str. 1, 28359, Bremen, Germany
| | - Hendrik Naatz
- Faculty of Production Engineering, University of Bremen, Badgasteiner Str. 1, 28359, Bremen, Germany
- Leibniz Institute for Materials Engineering IWT, Badgasteiner Str. 3, 28359, Bremen, Germany
| | - Hatem M A Amin
- Department of Chemistry, Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, OX1 3QZ, Oxford, UK
| | - Suman Pokhrel
- Faculty of Production Engineering, University of Bremen, Badgasteiner Str. 1, 28359, Bremen, Germany
- Leibniz Institute for Materials Engineering IWT, Badgasteiner Str. 3, 28359, Bremen, Germany
| | - Lutz Mädler
- Faculty of Production Engineering, University of Bremen, Badgasteiner Str. 1, 28359, Bremen, Germany
- Leibniz Institute for Materials Engineering IWT, Badgasteiner Str. 3, 28359, Bremen, Germany
| | - Richard G Compton
- Department of Chemistry, Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, OX1 3QZ, Oxford, UK
| |
Collapse
|
36
|
Adeleye AS, Pokhrel S, Mädler L, Keller AA. Influence of nanoparticle doping on the colloidal stability and toxicity of copper oxide nanoparticles in synthetic and natural waters. Water Res 2018; 132:12-22. [PMID: 29304444 DOI: 10.1016/j.watres.2017.12.069] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Revised: 12/22/2017] [Accepted: 12/24/2017] [Indexed: 06/07/2023]
Abstract
Engineered nanoparticles (NPs) are often doped with other elements to improve their functionality and, at times, physical and/or chemical stability. However, the effect of doping on the environmental implications of NPs is not well-understood. We investigated the colloidal stability and effects of CuO NPs doped with Fe (0-10%). Colloidal stability of the Fe-doped CuO NPs in aqueous media, as determined by critical coagulation concentrations of NaCl, decreased with increased Fe-doping. However, decrease in the overall particle density led to slower sedimentation of Fe-doped CuO NPs than would have been predicted from their aggregation behavior. Fe-doping significantly affected CuO dissolution (p < .001), promoting Cu leaching out from the doped NPs due to increased reactivity at neutral pH and increased surface area with Fe-doping. Fe-doping did not increase the toxicity of CuO to a marine phytoplankton, Isochrysis galbana, despite promoting ionic Cu release. Total suspended Cu was dominated by dissolved Cu complexes in seawater and particulate Cu in freshwater. Based on the abundance of different size fractions analyzed in freshwater, the particles detected in water suspension were mostly (≥50%) larger than 200 nm in diameter. However, these large-sized particles are mainly composed of aggregated nanosized particles held together by van der Waals attraction.
Collapse
Affiliation(s)
- Adeyemi S Adeleye
- Bren School of Environmental Science & Management, University of California, California 93106-5131, United States; University of California Center for Environmental Implications of Nanotechnology, Santa Barbara, California United States
| | - Suman Pokhrel
- Foundation Institute of Materials Science (IWT), Department of Production Engineering, University of Bremen, Bremen, Germany; University of California Center for Environmental Implications of Nanotechnology, Santa Barbara, California United States
| | - Lutz Mädler
- Foundation Institute of Materials Science (IWT), Department of Production Engineering, University of Bremen, Bremen, Germany; University of California Center for Environmental Implications of Nanotechnology, Santa Barbara, California United States
| | - Arturo A Keller
- Bren School of Environmental Science & Management, University of California, California 93106-5131, United States; University of California Center for Environmental Implications of Nanotechnology, Santa Barbara, California United States.
| |
Collapse
|
37
|
Manshian BB, Poelmans J, Saini S, Pokhrel S, Grez JJ, Himmelreich U, Mädler L, Soenen SJ. Nanoparticle-induced inflammation can increase tumor malignancy. Acta Biomater 2018; 68:99-112. [PMID: 29274476 DOI: 10.1016/j.actbio.2017.12.020] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 12/12/2017] [Accepted: 12/15/2017] [Indexed: 11/15/2022]
Abstract
Nanomaterials, such as aluminum oxide, have been regarded with high biomedical promise as potential immune adjuvants in favor of their bulk counterparts. For pathophysiological conditions where elevated immune activity already occurs, the contribution of nanoparticle-activated immune reactions remains unclear. Here, we investigated the effect of spherical and wire-shaped aluminum oxide nanoparticles on primary splenocytes and observed a clear pro-inflammatory effect of both nanoparticles, mainly for the high aspect ratio nanowires. The nanoparticles resulted in a clear activation of NLRP3 inflammasome, and also secreted transforming growth factor β. When cancer cells were exposed to these cytokines, this resulted in an increased level of epithelial-to-mesenchymal-transition, a hallmark for cancer metastasis, which did not occur when the cancer cells were directly exposed to the nanoparticles themselves. Using a syngeneic tumor model, the level of inflammation and degree of lung metastasis were significantly increased when the animals were exposed to the nanoparticles, particularly for the nanowires. This effect could be abrogated by treating the animals with inflammatory inhibitors. Collectively, these data indicate that the interaction of nanoparticles with immune cells can have secondary effects that may aggravate pathophysiological conditions, such as cancer malignancy, and conditions must be carefully selected to finely tune the induced aspecific inflammation into cancer-specific antitumor immunity. STATEMENT OF SIGNIFICANCE Many different types of nanoparticles have been shown to possess immunomodulatory properties, depending on their physicochemical parameters. This can potentially be harnessed as a possible antitumor therapy. However, in the current work we show that inflammation elicited by nanomaterials can have grave effects in pathophysiological conditions, where non-specific inflammation was found to increase cancer cell mobility and tumor malignancy. These data show that immunomodulatory properties of nanomaterials must be carefully controlled to avoid any undesired side-effects.
Collapse
Affiliation(s)
- Bella B Manshian
- Biomedical MRI Unit/MoSAIC, Department of Imaging and Pathology, KU Leuven, Herestraat 49, B3000 Leuven, Belgium
| | - Jennifer Poelmans
- Biomedical MRI Unit/MoSAIC, Department of Imaging and Pathology, KU Leuven, Herestraat 49, B3000 Leuven, Belgium
| | - Shweta Saini
- Biomedical MRI Unit/MoSAIC, Department of Imaging and Pathology, KU Leuven, Herestraat 49, B3000 Leuven, Belgium
| | - Suman Pokhrel
- Foundation Institute of Materials Science (IWT), Department of Production Engineering, University of Bremen, Bremen, Germany
| | - Julio Jiménez Grez
- Organ Systems, Department of Development and Regeneration, KU Leuven, Herestraat 49, B3000 Leuven, Belgium; Department of Obstetrics and Gynaecology, Clínica Alemana Universidad del Desarrollo, Santiago, Chile
| | - Uwe Himmelreich
- Biomedical MRI Unit/MoSAIC, Department of Imaging and Pathology, KU Leuven, Herestraat 49, B3000 Leuven, Belgium
| | - Lutz Mädler
- Foundation Institute of Materials Science (IWT), Department of Production Engineering, University of Bremen, Bremen, Germany
| | - Stefaan J Soenen
- Biomedical MRI Unit/MoSAIC, Department of Imaging and Pathology, KU Leuven, Herestraat 49, B3000 Leuven, Belgium.
| |
Collapse
|
38
|
Abstract
Abstract
While experimental high-throughput and computational methods exist for the development of functional materials, structural materials are still being developed on the base of experience, stepwise prediction and punctual support of computational models. As a result, many major breakthroughs have been and still are achieved by coincidence under non-intuitive conditions. Experimental high throughput methods allow to explore large process windows where no prediction is possible due to lack of existent data. This work proposes the high throughput method “Farbige Zustände” as a novel approach for the experimental exploration of structural materials. New methods for sample synthesis, treatment and characterization are developed as well as computational methods for ad-hoc data analysis, search and experiment planning.
Collapse
Affiliation(s)
- N. Ellendt
- University of Bremen , Faculty of Production Engineering, Badgasteiner Straße 1, 28359 Bremen, Germany, and Leibniz Institute for Materials Engineering IWT, Badgasteiner Straße 3, 28359 Bremen , Germany
| | - L. Mädler
- University of Bremen , Faculty of Production Engineering, Bremen, Germany, and Leibniz Institute for Materials Engineering IWT, Bremen , Germany
| |
Collapse
|
39
|
Meierhofer F, Li H, Gockeln M, Kun R, Grieb T, Rosenauer A, Fritsching U, Kiefer J, Birkenstock J, Mädler L, Pokhrel S. Screening Precursor-Solvent Combinations for Li 4Ti 5O 12 Energy Storage Material Using Flame Spray Pyrolysis. ACS Appl Mater Interfaces 2017; 9:37760-37777. [PMID: 28960057 DOI: 10.1021/acsami.7b11435] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The development and industrial application of advanced lithium based energy-storage materials are directly related to the innovative production techniques and the usage of inexpensive precursor materials. Flame spray pyrolysis (FSP) is a promising technique that overcomes the challenges in the production processes such as scalability, process control, material versatility, and cost. In the present study, phase pure anode material Li4Ti5O12 (LTO) was designed using FSP via extensive systematic screening of lithium and titanium precursors dissolved in five different organic solvents. The effect of precursor and solvent parameters such as chemical reactivity, boiling point, and combustion enthalpy on the particle formation either via gas-to-particle (evaporation/nucleation/growth) or via droplet-to-particle (precipitation/incomplete evaporation) is discussed. The presence of carboxylic acid in the precursor solution resulted in pure (>95 mass %) and homogeneous LTO nanoparticles of size 4-9 nm, attributed to two reasons: (1) stabilization of water sensitive metal alkoxides precursor and (2) formation of volatile carboxylates from lithium nitrate evidenced by attenuated total reflection Fourier transform infrared spectroscopy and single droplet combustion experiments. In contrast, the absence of carboxylic acids resulted in larger inhomogeneous crystalline titanium dioxide (TiO2) particles with significant reduction of LTO content as low as ∼34 mass %. In-depth particle characterization was performed using X-ray diffraction with Rietveld refinement, thermogravimetric analysis coupled with differential scanning calorimetry and mass spectrometry, gas adsorption, and vibrational spectroscopy. High-resolution transmission electron microscopy of the LTO product revealed excellent quality of the particles obtained at high temperature. In addition, high rate capability and efficient charge reversibility of LTO nanoparticles demonstrate the vast potential of inexpensive gas-phase synthesis for energy-storage materials.
Collapse
Affiliation(s)
- Florian Meierhofer
- Foundation Institute of Materials Science, Department of Production Engineering, University of Bremen , 28359 Bremen, Germany
| | - Haipeng Li
- Foundation Institute of Materials Science, Department of Production Engineering, University of Bremen , 28359 Bremen, Germany
| | - Michael Gockeln
- Innovative Sensor and Functional Materials Research Group, Department of Production Engineering, University of Bremen , 28359 Bremen, Germany
| | - Robert Kun
- Innovative Sensor and Functional Materials Research Group, Department of Production Engineering, University of Bremen , 28359 Bremen, Germany
- Fraunhofer Institute for Manufacturing Technology and Advanced Materials, IFAM , 28359 Bremen, Germany
| | - Tim Grieb
- Institute of Solid State Physics, Electron Microscopy, University of Bremen , 28359 Bremen, Germany
| | - Andreas Rosenauer
- Institute of Solid State Physics, Electron Microscopy, University of Bremen , 28359 Bremen, Germany
- MAPEX Center for Materials and Processes, University of Bremen , 28359 Bremen, Germany
| | - Udo Fritsching
- Foundation Institute of Materials Science, Department of Production Engineering, University of Bremen , 28359 Bremen, Germany
- MAPEX Center for Materials and Processes, University of Bremen , 28359 Bremen, Germany
| | - Johannes Kiefer
- Technische Thermodynamik, University of Bremen , 28359 Bremen, Germany
- MAPEX Center for Materials and Processes, University of Bremen , 28359 Bremen, Germany
| | - Johannes Birkenstock
- Central Laboratory for Crystallography and Applied Materials, University of Bremen , 28359 Bremen, Germany
| | - Lutz Mädler
- Foundation Institute of Materials Science, Department of Production Engineering, University of Bremen , 28359 Bremen, Germany
- MAPEX Center for Materials and Processes, University of Bremen , 28359 Bremen, Germany
| | - Suman Pokhrel
- Foundation Institute of Materials Science, Department of Production Engineering, University of Bremen , 28359 Bremen, Germany
| |
Collapse
|
40
|
Teck M, Murshed MM, Schowalter M, Lefeld N, Grossmann HK, Grieb T, Hartmann T, Robben L, Rosenauer A, Mädler L, Gesing TM. Structural and spectroscopic comparison between polycrystalline, nanocrystalline and quantum dot visible light photo-catalyst Bi 2 WO 6. J SOLID STATE CHEM 2017. [DOI: 10.1016/j.jssc.2017.07.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
41
|
|
42
|
Manshian BB, Pokhrel S, Himmelreich U, Tämm K, Sikk L, Fernández A, Rallo R, Tamm T, Mädler L, Soenen SJ. In Silico Design of Optimal Dissolution Kinetics of Fe-Doped ZnO Nanoparticles Results in Cancer-Specific Toxicity in a Preclinical Rodent Model. Adv Healthc Mater 2017; 6. [PMID: 28230930 DOI: 10.1002/adhm.201601379] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 01/12/2017] [Indexed: 11/06/2022]
Abstract
Cancer cells have unique but widely varying characteristics that have proven them difficult to be treated by classical therapeutics and calls for novel and selective treatment options. Nanomaterials (NMs) have been shown to display biological effects as a function of their chemical composition, and the extent and exact nature of these effects can vary between different biological environments. Here, ZnO NMs are doped with increasing levels of Fe, which allows to finely tune their dissolution rate resulting in significant differences in their biological behavior on cancer or normal cells. Based on in silico analysis, 2% Fe-doped ZnO NMs are found to be optimal to cause selective cancer cell death, which is confirmed in both cultured cells and syngeneic tumor models, where they also reduce metastasis formation. These results show that upon tuning NM chemical composition, NMs can be designed as a targeted selective anticancer therapy.
Collapse
Affiliation(s)
- Bella B. Manshian
- Department of Imaging and Pathology KU Leuven Herestraat 49 B3000 Leuven Belgium
| | - Suman Pokhrel
- Foundation Institute of Materials Science (IWT) Department of Production Engineering University of Bremen 28359 Bremen Germany
| | - Uwe Himmelreich
- Department of Imaging and Pathology KU Leuven Herestraat 49 B3000 Leuven Belgium
| | - Kaido Tämm
- Department of Chemistry University of Tartu Ravila 14a, 50411 Estonia
| | - Lauri Sikk
- Department of Chemistry University of Tartu Ravila 14a, 50411 Estonia
| | - Alberto Fernández
- Departament d'Enginyeria Quimica Universitat Rovira i Virgili Av. Paisos Catalans, 26 43007 Tarragona Spain
| | - Robert Rallo
- Departament d'Enginyeria Informatica i Matematiques Universitat Rovira i Virgili Av. Paisos Catalans 26 43007 Tarragona Spain
| | - Tarmo Tamm
- Institute of Technology University of Tartu Nooruse 1 Tartu 50411 Estonia
| | - Lutz Mädler
- Foundation Institute of Materials Science (IWT) Department of Production Engineering University of Bremen 28359 Bremen Germany
| | - Stefaan J. Soenen
- Department of Imaging and Pathology KU Leuven Herestraat 49 B3000 Leuven Belgium
| |
Collapse
|
43
|
Naatz H, Lin S, Li R, Jiang W, Ji Z, Chang CH, Köser J, Thöming J, Xia T, Nel AE, Mädler L, Pokhrel S. Safe-by-Design CuO Nanoparticles via Fe-Doping, Cu-O Bond Length Variation, and Biological Assessment in Cells and Zebrafish Embryos. ACS Nano 2017; 11:501-515. [PMID: 28026936 PMCID: PMC5824973 DOI: 10.1021/acsnano.6b06495] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
The safe implementation of nanotechnology requires nanomaterial hazard assessment in accordance with the material physicochemical properties that trigger the injury response at the nano/bio interface. Since CuO nanoparticles (NPs) are widely used industrially and their dissolution properties play a major role in hazard potential, we hypothesized that tighter bonding of Cu to Fe by particle doping could constitute a safer-by-design approach through decreased dissolution. Accordingly, we designed a combinatorial library in which CuO was doped with 1-10% Fe in a flame spray pyrolysis reactor. The morphology and structural properties were determined by XRD, BET, Raman spectroscopy, HRTEM, EFTEM, and EELS, which demonstrated a significant reduction in the apical Cu-O bond length while simultaneously increasing the planar bond length (Jahn-Teller distortion). Hazard screening was performed in tissue culture cell lines and zebrafish embryos to discern the change in the hazardous effects of doped vs nondoped particles. This demonstrated that with increased levels of doping there was a progressive decrease in cytotoxicity in BEAS-2B and THP-1 cells, as well as an incremental decrease in the rate of hatching interference in zebrafish embryos. The dissolution profiles were determined and the surface reactions taking place in Holtfreter's solution were validated using cyclic voltammetry measurements to demonstrate that the Cu+/Cu2+ and Fe2+/Fe3+ redox species play a major role in the dissolution process of pure and Fe-doped CuO. Altogether, a safe-by-design strategy was implemented for the toxic CuO particles via Fe doping and has been demonstrated for their safe use in the environment.
Collapse
Affiliation(s)
- Hendrik Naatz
- Foundation Institute of Materials Science (IWT), Department of Production Engineering, University of Bremen, Germany
| | - Sijie Lin
- California NanoSystems Institute, University of California, Los Angeles, California
- College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai China
| | - Ruibin Li
- Division of NanoMedicine, Department of Medicine, University of California, Los Angeles, California
- School of Radiation Medicine and Protection & School for Radiological and Interdisciplinary Sciences (RAD-X), Medical College of Soochow University, Suzhou, Jiangsu 215123, China
| | - Wen Jiang
- California NanoSystems Institute, University of California, Los Angeles, California
| | - Zhaoxia Ji
- California NanoSystems Institute, University of California, Los Angeles, California
| | - Chong Hyun Chang
- California NanoSystems Institute, University of California, Los Angeles, California
| | - Jan Köser
- Centre for Environmental Research and Sustainable Technology, University of Bremen, Germany
| | - Jorg Thöming
- Centre for Environmental Research and Sustainable Technology, University of Bremen, Germany
| | - Tian Xia
- California NanoSystems Institute, University of California, Los Angeles, California
- Division of NanoMedicine, Department of Medicine, University of California, Los Angeles, California
| | - Andre E. Nel
- California NanoSystems Institute, University of California, Los Angeles, California
- Division of NanoMedicine, Department of Medicine, University of California, Los Angeles, California
| | - Lutz Mädler
- Foundation Institute of Materials Science (IWT), Department of Production Engineering, University of Bremen, Germany
| | - Suman Pokhrel
- Foundation Institute of Materials Science (IWT), Department of Production Engineering, University of Bremen, Germany
| |
Collapse
|
44
|
Brehm M, Kafka A, Bamler M, Kühne R, Schüürmann G, Sikk L, Burk J, Burk P, Tamm T, Tämm K, Pokhrel S, Mädler L, Kahru A, Aruoja V, Sihtmäe M, Scott-Fordsmand J, Sorensen PB, Escorihuela L, Roca CP, Fernández A, Giralt F, Rallo R. An Integrated Data-Driven Strategy for Safe-by-Design Nanoparticles: The FP7 MODERN Project. Adv Exp Med Biol 2017; 947:257-301. [PMID: 28168671 DOI: 10.1007/978-3-319-47754-1_9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The development and implementation of safe-by-design strategies is key for the safe development of future generations of nanotechnology enabled products. The safety testing of the huge variety of nanomaterials that can be synthetized is unfeasible due to time and cost constraints. Computational modeling facilitates the implementation of alternative testing strategies in a time and cost effective way. The development of predictive nanotoxicology models requires the use of high quality experimental data on the structure, physicochemical properties and bioactivity of nanomaterials. The FP7 Project MODERN has developed and evaluated the main components of a computational framework for the evaluation of the environmental and health impacts of nanoparticles. This chapter describes each of the elements of the framework including aspects related to data generation, management and integration; development of nanodescriptors; establishment of nanostructure-activity relationships; identification of nanoparticle categories; hazard ranking and risk assessment.
Collapse
Affiliation(s)
- Martin Brehm
- UFZ Department of Ecological Chemistry, Helmholtz Centre for Environmental Research, Permoserstrasse 15, 04318, Leipzig, Germany
| | - Alexander Kafka
- UFZ Department of Ecological Chemistry, Helmholtz Centre for Environmental Research, Permoserstrasse 15, 04318, Leipzig, Germany
- Faculty for Chemistry and Mineralogy, University of Leipzig, Johannisallee 29, 04103, Leipzig, Germany
| | - Markus Bamler
- UFZ Department of Ecological Chemistry, Helmholtz Centre for Environmental Research, Permoserstrasse 15, 04318, Leipzig, Germany
- Institute for Organic Chemistry, Technical University Bergakademie Freiberg, Leipziger Strasse 29, 09596, Freiberg, Germany
| | - Ralph Kühne
- UFZ Department of Ecological Chemistry, Helmholtz Centre for Environmental Research, Permoserstrasse 15, 04318, Leipzig, Germany
| | - Gerrit Schüürmann
- UFZ Department of Ecological Chemistry, Helmholtz Centre for Environmental Research, Permoserstrasse 15, 04318, Leipzig, Germany
- Institute for Organic Chemistry, Technical University Bergakademie Freiberg, Leipziger Strasse 29, 09596, Freiberg, Germany
| | - Lauri Sikk
- Institute of Chemistry, University of Tartu, Ravila 14a, Tartu, 50411, Estonia
- Institut de Chimie de Nice (UMR CNRS 7272), Université Nice Sophia Antipolis, 06108, Nice, France
| | - Jaanus Burk
- Institute of Chemistry, University of Tartu, Ravila 14a, Tartu, 50411, Estonia
| | - Peeter Burk
- Institute of Chemistry, University of Tartu, Ravila 14a, Tartu, 50411, Estonia
| | - Tarmo Tamm
- Institute of Technology, University of Tartu, Nooruse 1, Tartu, 50411, Estonia
| | - Kaido Tämm
- Institute of Chemistry, University of Tartu, Ravila 14a, Tartu, 50411, Estonia
| | - Suman Pokhrel
- Foundation Institute of Materials Science (IWT), Department of Production Engineering, University of Bremen, Bremen, Germany
| | - Lutz Mädler
- Foundation Institute of Materials Science (IWT), Department of Production Engineering, University of Bremen, Bremen, Germany
| | - Anne Kahru
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, Tallinn, 12618, Estonia
| | - Villem Aruoja
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, Tallinn, 12618, Estonia
| | - Mariliis Sihtmäe
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, Tallinn, 12618, Estonia
| | - Janeck Scott-Fordsmand
- Department of Bioscience, Aarhus Universit, Vejlsovej 25, PO BOX 314, DK, 8600, Silkeborg, Denmark
| | - Peter B Sorensen
- Department of Bioscience, Aarhus Universit, Vejlsovej 25, PO BOX 314, DK, 8600, Silkeborg, Denmark
| | - Laura Escorihuela
- Departament d'Enginyeria Química, Universitat Rovira i Virgili, Av. Paisos Catalans, 26, 43007, Tarragona, Spain
| | - Carlos P Roca
- UFZ Department of Ecological Chemistry, Helmholtz Centre for Environmental Research, Permoserstrasse 15, 04318, Leipzig, Germany
| | - Alberto Fernández
- Departament d'Enginyeria Química, Universitat Rovira i Virgili, Av. Paisos Catalans, 26, 43007, Tarragona, Spain
| | - Francesc Giralt
- Departament d'Enginyeria Química, Universitat Rovira i Virgili, Av. Paisos Catalans, 26, 43007, Tarragona, Spain
| | - Robert Rallo
- Departament d'Enginyeria Informatica i Matematiques, Universitat Rovira i Virgili, Av. Paisos Catalans, 26, 43007, Tarragona, Spain.
| |
Collapse
|
45
|
Kunz-Schughart LA, Dubrovska A, Peitzsch C, Ewe A, Aigner A, Schellenburg S, Muders MH, Hampel S, Cirillo G, Iemma F, Tietze R, Alexiou C, Stephan H, Zarschler K, Vittorio O, Kavallaris M, Parak WJ, Mädler L, Pokhrel S. Nanoparticles for radiooncology: Mission, vision, challenges. Biomaterials 2016; 120:155-184. [PMID: 28063356 DOI: 10.1016/j.biomaterials.2016.12.010] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 12/08/2016] [Accepted: 12/09/2016] [Indexed: 12/29/2022]
Abstract
Cancer is one of the leading non-communicable diseases with highest mortality rates worldwide. About half of all cancer patients receive radiation treatment in the course of their disease. However, treatment outcome and curative potential of radiotherapy is often impeded by genetically and/or environmentally driven mechanisms of tumor radioresistance and normal tissue radiotoxicity. While nanomedicine-based tools for imaging, dosimetry and treatment are potential keys to the improvement of therapeutic efficacy and reducing side effects, radiotherapy is an established technique to eradicate the tumor cells. In order to progress the introduction of nanoparticles in radiooncology, due to the highly interdisciplinary nature, expertise in chemistry, radiobiology and translational research is needed. In this report recent insights and promising policies to design nanotechnology-based therapeutics for tumor radiosensitization will be discussed. An attempt is made to cover the entire field from preclinical development to clinical studies. Hence, this report illustrates (1) the radio- and tumor-biological rationales for combining nanostructures with radiotherapy, (2) tumor-site targeting strategies and mechanisms of cellular uptake, (3) biological response hypotheses for new nanomaterials of interest, and (4) challenges to translate the research findings into clinical trials.
Collapse
Affiliation(s)
- Leoni A Kunz-Schughart
- OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden and Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Anna Dubrovska
- OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden and Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Claudia Peitzsch
- OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden and Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Alexander Ewe
- Rudolf-Boehm-Institute for Pharmacology and Toxicology, Clinical Pharmacology, University of Leipzig, Germany
| | - Achim Aigner
- Rudolf-Boehm-Institute for Pharmacology and Toxicology, Clinical Pharmacology, University of Leipzig, Germany
| | - Samuel Schellenburg
- Institute of Pathology, University Hospital, Carl Gustav Carus, TU Dresden, Germany
| | - Michael H Muders
- Institute of Pathology, University Hospital, Carl Gustav Carus, TU Dresden, Germany
| | - Silke Hampel
- Leibniz Institute of Solid State and Material Research Dresden, 01171 Dresden, Germany
| | - Giuseppe Cirillo
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende, CS, Italy
| | - Francesca Iemma
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende, CS, Italy
| | - Rainer Tietze
- ENT-Department, Section for Experimental Oncology and Nanomedicine (SEON), Else Kröner-Fresenius Professorship, University Hospital Erlangen, Erlangen, Germany
| | - Christoph Alexiou
- ENT-Department, Section for Experimental Oncology and Nanomedicine (SEON), Else Kröner-Fresenius Professorship, University Hospital Erlangen, Erlangen, Germany
| | - Holger Stephan
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, 01314 Dresden, Germany
| | - Kristof Zarschler
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, 01314 Dresden, Germany
| | - Orazio Vittorio
- Children's Cancer Institute Australia, ARC Centre of Excellence in Convergent Bio-Nano Science and Technology and Australian Centre for NanoMedicine, Sydney, UNSW, Australia
| | - Maria Kavallaris
- Children's Cancer Institute Australia, ARC Centre of Excellence in Convergent Bio-Nano Science and Technology and Australian Centre for NanoMedicine, Sydney, UNSW, Australia
| | - Wolfgang J Parak
- Fachbereich Physik, Philipps Universität Marburg, 35037 Marburg, Germany; CIC Biomagune, 20009 San Sebastian, Spain
| | - Lutz Mädler
- Foundation Institute of Materials Science (IWT), Department of Production Engineering, University of Bremen, 28359 Bremen, Germany
| | - Suman Pokhrel
- Foundation Institute of Materials Science (IWT), Department of Production Engineering, University of Bremen, 28359 Bremen, Germany.
| |
Collapse
|
46
|
Tämm K, Sikk L, Burk J, Rallo R, Pokhrel S, Mädler L, Scott-Fordsmand JJ, Burk P, Tamm T. Parametrization of nanoparticles: development of full-particle nanodescriptors. Nanoscale 2016; 8:16243-16250. [PMID: 27714136 DOI: 10.1039/c6nr04376c] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
While metal oxide nanoparticles (NPs) are one of the most commonly used nanomaterials, the theoretical models used to analyze and predict their behavior have been mostly based on just the chemical composition or the extrapolation from small metal oxide clusters' calculations. In this study, a set of novel, theoretical full-particle descriptors for modeling, grouping or read-across of metal oxide NP properties and biological activity was developed based on the force-field calculation of the potential energies of whole NPs. The capability of these nanodescriptors to group the nanomaterials acoording to their biological activity was demonstrated by Principal Component Analysis (PCA). The grouping provided by the PCA approach was found to be in good accordance with the algal growth inhibition data of well characterized nanoparticles, synthesized and measured inside the consortia of the EU 7FP framework MODERN project.
Collapse
Affiliation(s)
- K Tämm
- Institute of Chemistry, University of Tartu, Ravila 14a, Tartu 50411, Estonia.
| | - L Sikk
- Institute of Chemistry, University of Tartu, Ravila 14a, Tartu 50411, Estonia.
| | - J Burk
- Institute of Chemistry, University of Tartu, Ravila 14a, Tartu 50411, Estonia.
| | - R Rallo
- Departament d'Enginyeria Informatica i Matematiques, Universitat Rovira i Virgili, Av. Paisos Catalans 26, Tarragona 43007, Spain
| | - S Pokhrel
- Foundation Institute of Materials Science (IWT), Department of Production Engineering, University of Bremen, Germany
| | - L Mädler
- Foundation Institute of Materials Science (IWT), Department of Production Engineering, University of Bremen, Germany
| | - J J Scott-Fordsmand
- Aarhus University, Dept Bioscience, Vejlsøvej 25, PO Box 314, 8600 Silkeborg, Denmark
| | - P Burk
- Institute of Chemistry, University of Tartu, Ravila 14a, Tartu 50411, Estonia.
| | - T Tamm
- Institute of Technology, University of Tartu, Nooruse 1, Tartu 50411, Estonia
| |
Collapse
|
47
|
Rebholz J, Grossmann K, Pham D, Pokhrel S, Mädler L, Weimar U, Barsan N. Selectivity Enhancement by Using Double-Layer MOX-Based Gas Sensors Prepared by Flame Spray Pyrolysis (FSP). Sensors (Basel) 2016; 16:s16091437. [PMID: 27608028 PMCID: PMC5038715 DOI: 10.3390/s16091437] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 08/29/2016] [Accepted: 09/02/2016] [Indexed: 11/16/2022]
Abstract
Here we present a novel concept for the selective recognition of different target gases with a multilayer semiconducting metal oxide (SMOX)-based sensor device. Direct current (DC) electrical resistance measurements were performed during exposure to CO and ethanol as single gases and mixtures of highly porous metal oxide double- and single-layer sensors obtained by flame spray pyrolysis. The results show that the calculated resistance ratios of the single- and double-layer sensors are a good indicator for the presence of specific gases in the atmosphere, and can constitute some building blocks for the development of chemical logic devices. Due to the inherent lack of selectivity of SMOX-based gas sensors, such devices could be especially relevant for domestic applications.
Collapse
Affiliation(s)
- Julia Rebholz
- Institute of Physical Chemistry, University of Tübingen, Auf der Morgenstelle 15, Tübingen 72076, Germany.
| | - Katharina Grossmann
- Institute of Physical Chemistry, University of Tübingen, Auf der Morgenstelle 15, Tübingen 72076, Germany.
| | - David Pham
- IWT Foundation Institute of Materials Science, University of Bremen, Badgasteiner Str. 3, Bremen 28359, Germany.
| | - Suman Pokhrel
- IWT Foundation Institute of Materials Science, University of Bremen, Badgasteiner Str. 3, Bremen 28359, Germany.
| | - Lutz Mädler
- IWT Foundation Institute of Materials Science, University of Bremen, Badgasteiner Str. 3, Bremen 28359, Germany.
| | - Udo Weimar
- Institute of Physical Chemistry, University of Tübingen, Auf der Morgenstelle 15, Tübingen 72076, Germany.
| | - Nicolae Barsan
- Institute of Physical Chemistry, University of Tübingen, Auf der Morgenstelle 15, Tübingen 72076, Germany.
| |
Collapse
|
48
|
Sun B, Wang X, Liao YP, Ji Z, Chang CH, Pokhrel S, Ku J, Liu X, Wang M, Dunphy DR, Li R, Meng H, Mädler L, Brinker CJ, Nel AE, Xia T. Repetitive Dosing of Fumed Silica Leads to Profibrogenic Effects through Unique Structure-Activity Relationships and Biopersistence in the Lung. ACS Nano 2016; 10:8054-66. [PMID: 27483033 PMCID: PMC5214959 DOI: 10.1021/acsnano.6b04143] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Contrary to the notion that the use of fumed silica in consumer products can "generally (be) regarded as safe" (GRAS), the high surface reactivity of pyrogenic silica differs from other forms of synthetic amorphous silica (SAS), including the capacity to induce membrane damage and acute proinflammatory changes in the murine lung. In addition, the chain-like structure and reactive surface silanols also allow fumed silica to activate the NLRP3 inflammasome, leading to IL-1β production. This pathway is known to be associated with subchronic inflammation and profibrogenic effects in the lung by α-quartz and carbon nanotubes. However, different from the latter materials, bolus dose instillation of 21 mg/kg fumed silica did not induce sustained IL-1β production or subchronic pulmonary effects. In contrast, the NLRP3 inflammasome pathway was continuously activated by repetitive-dose administration of 3 × 7 mg/kg fumed silica, 1 week apart. We also found that while single-dose exposure failed to induce profibrotic effects in the lung, repetitive dosing can trigger increased collagen production, even at 3 × 3 mg/kg. The change between bolus and repetitive dosing was due to a change in lung clearance, with recurrent dosing leading to fumed silica biopersistence, sustained macrophage recruitment, and activation of the NLRP3 pathway. These subchronic proinflammatory effects disappeared when less surface-reactive titanium-doped fumed silica was used for recurrent administration. All considered, these data indicate that while fumed silica may be regarded as safe for some applications, we should reconsider the GRAS label during repetitive or chronic inhalation exposure conditions.
Collapse
Affiliation(s)
- Bingbing Sun
- Division of NanoMedicine, Department of Medicine, University of California, Los Angeles, CA 90095, United States
| | - Xiang Wang
- California NanoSystems Institute, University of California, Los Angeles, CA 90095, United States
| | - Yu-Pei Liao
- Division of NanoMedicine, Department of Medicine, University of California, Los Angeles, CA 90095, United States
| | - Zhaoxia Ji
- California NanoSystems Institute, University of California, Los Angeles, CA 90095, United States
| | - Chong Hyun Chang
- California NanoSystems Institute, University of California, Los Angeles, CA 90095, United States
| | - Suman Pokhrel
- Foundation Institute of Materials Science (IWT), Department of Production Engineering, University of Bremen, Germany
| | - Justine Ku
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095, United States
| | - Xiangsheng Liu
- Division of NanoMedicine, Department of Medicine, University of California, Los Angeles, CA 90095, United States
| | - Meiying Wang
- Division of NanoMedicine, Department of Medicine, University of California, Los Angeles, CA 90095, United States
| | - Darren R. Dunphy
- Department of Chemical and Nuclear Engineering, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Ruibin Li
- Division of NanoMedicine, Department of Medicine, University of California, Los Angeles, CA 90095, United States
- School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, China
| | - Huan Meng
- Division of NanoMedicine, Department of Medicine, University of California, Los Angeles, CA 90095, United States
| | - Lutz Mädler
- Foundation Institute of Materials Science (IWT), Department of Production Engineering, University of Bremen, Germany
| | - C. Jeffrey Brinker
- Department of Chemical and Nuclear Engineering, University of New Mexico, Albuquerque, New Mexico 87131, United States
- Department of Molecular Genetics and Microbiology, University of New Mexico, Albuquerque, New Mexico 87131, United States
- Self-Assembled Materials Department, Sandia National Laboratories, PO Box 5800 MS1349, Albuquerque, New Mexico 87185, United States
| | - André E. Nel
- Division of NanoMedicine, Department of Medicine, University of California, Los Angeles, CA 90095, United States
- California NanoSystems Institute, University of California, Los Angeles, CA 90095, United States
- Address correspondence to or
| | - Tian Xia
- Division of NanoMedicine, Department of Medicine, University of California, Los Angeles, CA 90095, United States
- California NanoSystems Institute, University of California, Los Angeles, CA 90095, United States
- Address correspondence to or
| |
Collapse
|
49
|
Kim KD, Pokhrel S, Wang Z, Ling H, Zhou C, Liu Z, Hunger M, Mädler L, Huang J. Tailoring High-Performance Pd Catalysts for Chemoselective Hydrogenation Reactions via Optimizing the Parameters of the Double-Flame Spray Pyrolysis. ACS Catal 2016. [DOI: 10.1021/acscatal.6b00396] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kyung Duk Kim
- Laboratory
for Catalysis Engineering, School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Suman Pokhrel
- Foundation
Institute of Materials Science (IWT), Department of Production Engineering, University of Bremen, 28359 Bremen, Germany
| | - Zichun Wang
- Laboratory
for Catalysis Engineering, School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Huajuan Ling
- Laboratory
for Catalysis Engineering, School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Cuifeng Zhou
- Laboratory
for Catalysis Engineering, School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Zongwen Liu
- Laboratory
for Catalysis Engineering, School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Michael Hunger
- Institute
of Chemical Technology, University of Stuttgart, 70550 Stuttgart, Germany
| | - Lutz Mädler
- Foundation
Institute of Materials Science (IWT), Department of Production Engineering, University of Bremen, 28359 Bremen, Germany
| | - Jun Huang
- Laboratory
for Catalysis Engineering, School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, New South Wales 2006, Australia
| |
Collapse
|
50
|
Schubert M, Pokhrel S, Thomé A, Zielasek V, Gesing TM, Roessner F, Mädler L, Bäumer M. Highly active Co–Al2O3-based catalysts for CO2 methanation with very low platinum promotion prepared by double flame spray pyrolysis. Catal Sci Technol 2016. [DOI: 10.1039/c6cy01252c] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [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
Alumina supported Co catalysts are often promoted with noble metals to improve their reducibility and provide a high number of metallic Co sites. A flame spray pyrolysis based approach for the preparation is described which allows a fine dispersion of Pt so that very low concentrations are necessary.
Collapse
Affiliation(s)
- Miriam Schubert
- Institute of Applied and Physical Chemistry
- University of Bremen
- Germany
| | - Suman Pokhrel
- Foundation Institute of Materials Science (IWT)
- Department of Production Engineering
- University of Bremen
- Germany
| | - Andreas Thomé
- Institute of Chemistry
- Carl v. Ossietzky University of Oldenburg
- Germany
| | - Volkmar Zielasek
- Institute of Applied and Physical Chemistry
- University of Bremen
- Germany
- MAPEX Center for Materials and Processes
- University of Bremen
| | - Thorsten M. Gesing
- Solid State Chemical Crystallography
- Institute of Inorganic Chemistry and Crystallography
- University of Bremen
- Germany
- MAPEX Center for Materials and Processes
| | - Frank Roessner
- Institute of Chemistry
- Carl v. Ossietzky University of Oldenburg
- Germany
| | - Lutz Mädler
- Foundation Institute of Materials Science (IWT)
- Department of Production Engineering
- University of Bremen
- Germany
- MAPEX Center for Materials and Processes
| | - Marcus Bäumer
- Institute of Applied and Physical Chemistry
- University of Bremen
- Germany
- MAPEX Center for Materials and Processes
- University of Bremen
| |
Collapse
|