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Zahn D, Landers J, Diegel M, Salamon S, Stihl A, Schacher FH, Wende H, Dellith J, Dutz S. Optimization of Magnetic Cobalt Ferrite Nanoparticles for Magnetic Heating Applications in Biomedical Technology. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13101673. [PMID: 37242088 DOI: 10.3390/nano13101673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/10/2023] [Accepted: 05/10/2023] [Indexed: 05/28/2023]
Abstract
Using magnetic nanoparticles for extracorporeal magnetic heating applications in bio-medical technology allows higher external field amplitudes and thereby the utilization of particles with higher coercivities (HC). In this study, we report the synthesis and characterization of high coercivity cobalt ferrite nanoparticles following a wet co-precipitation method. Particles are characterized with magnetometry, X-ray diffraction, Mössbauer spectroscopy, transmission electron microscopy (TEM) and calorimetric measurements for the determination of their specific absorption rate (SAR). In the first series, CoxFe3-xO4 particles were synthesized with x = 1 and a structured variation of synthesis conditions, including those of the used atmosphere (O2 or N2). In the second series, particles with x = 0 to 1 were synthesized to study the influence of the cobalt fraction on the resulting magnetic and structural properties. Crystallite sizes of the resulting particles ranged between 10 and 18 nm, while maximum coercivities at room temperatures of 60 kA/m for synthesis with O2 and 37 kA/m for N2 were reached. Magnetization values at room temperature and 2 T (MRT,2T) up to 60 Am2/kg under N2 for x = 1 can be achieved. Synthesis parameters that lead to the formation of an additional phase when they exceed specific thresholds have been identified. Based on XRD findings, the direct correlation between high-field magnetization, the fraction of this antiferromagnetic byphase and the estimated transition temperature of this byphase, extracted from the Mössbauer spectroscopy series, we were able to attribute this contribution to akageneite. When varying the cobalt fraction x, a non-monotonous correlation of HC and x was found, with a linear increase of HC up to x = 0.8 and a decrease for x > 0.8, while magnetometry and in-field Mössbauer experiments demonstrated a moderate degree of spin canting for all x, yielding high magnetization. SAR values up to 480 W/g (@290 kHz, 69 mT) were measured for immobilized particles with x = 0.3, whit the external field amplitude being the limiting factor due to the high coercivities of our particles.
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Affiliation(s)
- Diana Zahn
- Institute of Biomedical Engineering and Informatics (BMTI), Technische Universität Ilmenau, D-98693 Ilmenau, Germany
| | - Joachim Landers
- Faculty of Physics and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, D-47057 Duisburg, Germany
| | - Marco Diegel
- Leibniz Institute of Photonic Technology (IPHT), D-07745 Jena, Germany
| | - Soma Salamon
- Faculty of Physics and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, D-47057 Duisburg, Germany
| | - Andreas Stihl
- Institute for Organic Chemistry and Macromolecular Chemistry, Friedrich-Schiller-University Jena, D-07743 Jena, Germany
- Jena Center for Soft Matter (JSCM), Friedrich-Schiller-University Jena, D-07745 Jena, Germany
| | - Felix H Schacher
- Institute for Organic Chemistry and Macromolecular Chemistry, Friedrich-Schiller-University Jena, D-07743 Jena, Germany
- Jena Center for Soft Matter (JSCM), Friedrich-Schiller-University Jena, D-07745 Jena, Germany
| | - Heiko Wende
- Faculty of Physics and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, D-47057 Duisburg, Germany
| | - Jan Dellith
- Leibniz Institute of Photonic Technology (IPHT), D-07745 Jena, Germany
| | - Silvio Dutz
- Institute of Biomedical Engineering and Informatics (BMTI), Technische Universität Ilmenau, D-98693 Ilmenau, Germany
- Leibniz Institute of Photonic Technology (IPHT), D-07745 Jena, Germany
- Leupold Institute for Applied Natural Sciences (LIAN), Westsächsische Hochschule Zwickau, D-08056 Zwickau, Germany
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Matboo SA, Nazari S, Niapour A, Niri MV, Asgari E, Mokhtari SA. Antibacterial effect of TiO 2 modified with poly-amidoamine dendrimer - G3 on S. aureus and E. coli in aqueous solutions. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2022; 85:605-616. [PMID: 35100142 DOI: 10.2166/wst.2022.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
This study investigated bacterial removal using TiO2 nanoparticles (NPs) modified with poly-amidoamine dendrimer macromolecule (PAMAM, G3). The PAMAM G3/TiO2 (nanohybrid) was used to specify antibacterial properties via broth microdilution (MBC-Minimum Bactericidal Concentration and MIC-Minimum Inhibitory Concentration-determination), paper disc diffusion, and surface plate count methods. The nanohybrid was characterized via the different techniques. The effects of different factors including initial bacteria count, run time, solution pH, and the nanohybrid concentration were studied. The nanohybrid cytotoxicity was studied on AGS and MKN45 cells line by MTT assay. It was revealed that the nanohybrid was effective in intercepting both bacterial strains growth. The MIC value for S. aureus and E. coli were determined to be 4 and 2 μg/mL, respectively. The MBC value for both strains were calculated to be 32 μg/mL. The results showed removal efficiency of 100% for S. aureus and E. coli bacteria in optimum situation. The decrease in cell viability in the dosage of 32 μg/mL after 72 h treatment for AGS and MKN45 cells line were shown to be 6.2 and 4.6%, respectively. The nanohybrid was able to decrease the S. aureus and E. coli count in solution, which meets the drinking water criterions aligned with WHO guidelines.
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Affiliation(s)
- Soudabeh Alizadeh Matboo
- Department of Environmental Health Engineering, School of public Health, Ardabil University of Medical Sciences, Ardabil, Iran E-mail:
| | - Shahram Nazari
- Department of Environmental Health Engineering, Khalkhal University of Medical Sciences, Khalkhal, Iran
| | - Ali Niapour
- Research Laboratory for Embryology and Stem Cells, Department of Anatomical Sciences, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Mehdi Vosoughi Niri
- Department of Environmental Health Engineering, School of public Health, Ardabil University of Medical Sciences, Ardabil, Iran E-mail:
| | - Esrafil Asgari
- Department of Environmental Health Engineering, School of Health, Khoy University of Medical Sciences, Khoy, Iran
| | - Seyyed Ahmad Mokhtari
- Department of Environmental Health Engineering, School of public Health, Ardabil University of Medical Sciences, Ardabil, Iran E-mail:
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Cheeseman S, Christofferson AJ, Kariuki R, Cozzolino D, Daeneke T, Crawford RJ, Truong VK, Chapman J, Elbourne A. Antimicrobial Metal Nanomaterials: From Passive to Stimuli-Activated Applications. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:1902913. [PMID: 32440470 PMCID: PMC7237851 DOI: 10.1002/advs.201902913] [Citation(s) in RCA: 124] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 01/23/2020] [Accepted: 02/22/2020] [Indexed: 05/20/2023]
Abstract
The development of antimicrobial drug resistance among pathogenic bacteria and fungi is one of the most significant health issues of the 21st century. Recently, advances in nanotechnology have led to the development of nanomaterials, particularly metals that exhibit antimicrobial properties. These metal nanomaterials have emerged as promising alternatives to traditional antimicrobial therapies. In this review, a broad overview of metal nanomaterials, their synthesis, properties, and interactions with pathogenic micro-organisms is first provided. Secondly, the range of nanomaterials that demonstrate passive antimicrobial properties are outlined and in-depth analysis and comparison of stimuli-responsive antimicrobial nanomaterials are provided, which represent the next generation of microbiocidal nanomaterials. The stimulus applied to activate such nanomaterials includes light (including photocatalytic and photothermal) and magnetic fields, which can induce magnetic hyperthermia and kinetically driven magnetic activation. Broadly, this review aims to summarize the currently available research and provide future scope for the development of metal nanomaterial-based antimicrobial technologies, particularly those that can be activated through externally applied stimuli.
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Affiliation(s)
- Samuel Cheeseman
- School of ScienceCollege of ScienceEngineering and HealthRMIT UniversityMelbourneVIC3001Australia
- Nanobiotechnology LaboratorySchool of ScienceCollege of ScienceEngineering and HealthRMIT UniversityMelbourneVIC3001Australia
| | - Andrew J. Christofferson
- School of EngineeringRMIT UniversityMelbourneVIC3001Australia
- Food Science and TechnologyBundoora CampusSchool of ScienceCollege of ScienceEngineering and HealthRMIT UniversityMelbourneVIC3086Australia
| | - Rashad Kariuki
- School of ScienceCollege of ScienceEngineering and HealthRMIT UniversityMelbourneVIC3001Australia
- Nanobiotechnology LaboratorySchool of ScienceCollege of ScienceEngineering and HealthRMIT UniversityMelbourneVIC3001Australia
| | - Daniel Cozzolino
- School of ScienceCollege of ScienceEngineering and HealthRMIT UniversityMelbourneVIC3001Australia
- Food Science and TechnologyBundoora CampusSchool of ScienceCollege of ScienceEngineering and HealthRMIT UniversityMelbourneVIC3086Australia
| | - Torben Daeneke
- School of EngineeringRMIT UniversityMelbourneVIC3001Australia
| | - Russell J. Crawford
- School of ScienceCollege of ScienceEngineering and HealthRMIT UniversityMelbourneVIC3001Australia
- Nanobiotechnology LaboratorySchool of ScienceCollege of ScienceEngineering and HealthRMIT UniversityMelbourneVIC3001Australia
| | - Vi Khanh Truong
- School of ScienceCollege of ScienceEngineering and HealthRMIT UniversityMelbourneVIC3001Australia
- Nanobiotechnology LaboratorySchool of ScienceCollege of ScienceEngineering and HealthRMIT UniversityMelbourneVIC3001Australia
| | - James Chapman
- School of ScienceCollege of ScienceEngineering and HealthRMIT UniversityMelbourneVIC3001Australia
- Nanobiotechnology LaboratorySchool of ScienceCollege of ScienceEngineering and HealthRMIT UniversityMelbourneVIC3001Australia
| | - Aaron Elbourne
- School of ScienceCollege of ScienceEngineering and HealthRMIT UniversityMelbourneVIC3001Australia
- Nanobiotechnology LaboratorySchool of ScienceCollege of ScienceEngineering and HealthRMIT UniversityMelbourneVIC3001Australia
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Synthesis and evaluation of the antibacterial effect of silica-coated modified magnetic poly-(amidoamine) G5 nanoparticles on E. coli and S. aureus. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.11.101] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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