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Ognjanović M, Bošković M, Kolev H, Dojčinović B, Vranješ-Đurić S, Antić B. Synthesis, Surface Modification and Magnetic Properties Analysis of Heat-Generating Cobalt-Substituted Magnetite Nanoparticles. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:782. [PMID: 38727376 PMCID: PMC11085861 DOI: 10.3390/nano14090782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Revised: 04/24/2024] [Accepted: 04/25/2024] [Indexed: 05/12/2024]
Abstract
Here, we present the results of the synthesis, surface modification, and properties analysis of magnetite-based nanoparticles, specifically Co0.047Fe2.953O4 (S1) and Co0.086Fe2.914O4 (S2). These nanoparticles were synthesized using the co-precipitation method at 80 °C for 2 h. They exhibit a single-phase nature and crystallize in a spinel-type structure (space group Fd3¯m). Transmission electron microscopy analysis reveals that the particles are quasi-spherical in shape and approximately 11 nm in size. An observed increase in saturation magnetization, coercivity, remanence, and blocking temperature in S2 compared to S1 can be attributed to an increase in magnetocrystalline anisotropy due to the incorporation of Co ions in the crystal lattice of the parent compound (Fe3O4). The heating efficiency of the samples was determined by fitting the Box-Lucas equation to the acquired temperature curves. The calculated Specific Loss Power (SLP) values were 46 W/g and 23 W/g (under HAC = 200 Oe and f = 252 kHz) for S1 and S2, respectively. Additionally, sample S1 was coated with citric acid (Co0.047Fe2.953O4@CA) and poly(acrylic acid) (Co0.047Fe2.953O4@PAA) to obtain stable colloids for further tests for magnetic hyperthermia applications in cancer therapy. Fits of the Box-Lucas equation provided SLP values of 21 W/g and 34 W/g for CA- and PAA-coated samples, respectively. On the other hand, X-ray photoelectron spectroscopy analysis points to the catalytically active centers Fe2+/Fe3+ and Co2+/Co3+ on the particle surface, suggesting possible applications of the samples as heterogeneous self-heating catalysts in advanced oxidation processes under an AC magnetic field.
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Affiliation(s)
- Miloš Ognjanović
- VINČA Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, 11351 Belgrade, Serbia; (M.B.); (S.V.-Đ.); (B.A.)
| | - Marko Bošković
- VINČA Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, 11351 Belgrade, Serbia; (M.B.); (S.V.-Đ.); (B.A.)
| | - Hristo Kolev
- Institute of Catalysis, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria;
| | - Biljana Dojčinović
- Institute of Chemistry, Technology and Metallurgy, National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia;
| | - Sanja Vranješ-Đurić
- VINČA Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, 11351 Belgrade, Serbia; (M.B.); (S.V.-Đ.); (B.A.)
| | - Bratislav Antić
- VINČA Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, 11351 Belgrade, Serbia; (M.B.); (S.V.-Đ.); (B.A.)
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2
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Moya C, Escoda-Torroella M, Rodríguez-Álvarez J, Figueroa AI, García Í, Ferrer-Vidal IB, Gallo-Cordova A, Puerto Morales M, Aballe L, Fraile Rodríguez A, Labarta A, Batlle X. Unveiling the crystal and magnetic texture of iron oxide nanoflowers. NANOSCALE 2024; 16:1942-1951. [PMID: 38170857 DOI: 10.1039/d3nr04608g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Iron oxide nanoflowers (IONF) are densely packed multi-core aggregates known for their high saturation magnetization and initial susceptibility, as well as low remanence and coercive field. This study reports on how the local magnetic texture originating at the crystalline correlations among the cores determines the special magnetic properties of individual IONF over a wide size range from 40 to 400 nm. Regardless of this significant size variation in the aggregates, all samples exhibit a consistent crystalline correlation that extends well beyond the IONF cores. Furthermore, a nearly zero remnant magnetization, together with the presence of a persistently blocked state, and almost temperature-independent field-cooled magnetization, support the existence of a 3D magnetic texture throughout the IONF. This is confirmed by magnetic transmission X-ray microscopy images of tens of individual IONF, showing, in all cases, a nearly demagnetized state caused by the vorticity of the magnetic texture. Micromagnetic simulations agree well with these experimental findings, showing that the interplay between the inter-core direct exchange coupling and the demagnetizing field is responsible for the highly vortex-like spin configuration that stabilizes at low magnetic fields and appears to have partial topological protection. Overall, this comprehensive study provides valuable insights into the impact of crystalline texture on the magnetic properties of IONF over a wide size range, offering a deeper understanding of their potential applications in fields such as biomedicine and water remediation.
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Affiliation(s)
- Carlos Moya
- Departament de Física de la Matèria Condensada, Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain.
- Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, 08028 Barcelona, Spain
| | - Mariona Escoda-Torroella
- Departament de Física de la Matèria Condensada, Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain.
- Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, 08028 Barcelona, Spain
| | - Javier Rodríguez-Álvarez
- Departament de Física de la Matèria Condensada, Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain.
- Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, 08028 Barcelona, Spain
| | - Adriana I Figueroa
- Departament de Física de la Matèria Condensada, Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain.
- Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, 08028 Barcelona, Spain
| | - Íker García
- Departament de Física de la Matèria Condensada, Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain.
| | - Inés Batalla Ferrer-Vidal
- Departament de Física de la Matèria Condensada, Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain.
| | - A Gallo-Cordova
- Department of Nanoscience and Nanotechnology, Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC), Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain
| | - M Puerto Morales
- Department of Nanoscience and Nanotechnology, Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC), Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain
| | - Lucía Aballe
- ALBA Synchrotron Light Facility, CELLS, 08290 Barcelona, Spain
| | - Arantxa Fraile Rodríguez
- Departament de Física de la Matèria Condensada, Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain.
- Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, 08028 Barcelona, Spain
| | - Amílcar Labarta
- Departament de Física de la Matèria Condensada, Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain.
- Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, 08028 Barcelona, Spain
| | - Xavier Batlle
- Departament de Física de la Matèria Condensada, Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain.
- Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, 08028 Barcelona, Spain
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3
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Egea-Benavente D, Díaz-Ufano C, Gallo-Cordova Á, Palomares FJ, Cuya Huaman JL, Barber DF, Morales MDP, Balachandran J. Cubic Mesocrystal Magnetic Iron Oxide Nanoparticle Formation by Oriented Aggregation of Cubes in Organic Media: A Rational Design to Enhance the Magnetic Hyperthermia Efficiency. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37390112 DOI: 10.1021/acsami.3c03254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/02/2023]
Abstract
Magnetic iron oxide mesocrystals have been reported to exhibit collective magnetic properties and consequently enhanced heating capabilities under alternating magnetic fields. However, there is no universal mechanism to fully explain the formation pathway that determines the particle diameter, crystal size, and shape of these mesocrystals and their evolution along with the reaction. In this work, we have analyzed the formation of cubic magnetic iron oxide mesocrystals by thermal decomposition in organic media. We have observed that a nonclassical pathway leads to mesocrystals via the attachment of crystallographically aligned primary cubic particles and grows through sintering with time to achieve a sizable single crystal. In this case, the solvent 1-octadecene and the surfactant agent biphenyl-4-carboxylic acid seem to be the key parameters to form cubic mesocrystals as intermediates of the reaction in the presence of oleic acid. Interestingly, the magnetic properties and hyperthermia efficiency of the aqueous suspensions strongly depend on the degree of aggregation of the cores forming the final particle. The highest saturation magnetization and specific absorption rate values were found for the less aggregated mesocrystals. Thus, these cubic magnetic iron oxide mesocrystals stand out as an excellent alternative for biomedical applications with their enhanced magnetic properties.
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Affiliation(s)
- David Egea-Benavente
- Department of Immunology, and Oncology and Nanobiomedicine Initiative, Centro Nacional de Biotecnología (CNB-CSIC), Darwin 3, 28049 Madrid, Spain
| | - Carlos Díaz-Ufano
- Department of Nanoscience and Nanotechnology, Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC), Sor Juana Inés de La Cruz 3, 28049 Madrid, Spain
| | - Álvaro Gallo-Cordova
- Department of Nanoscience and Nanotechnology, Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC), Sor Juana Inés de La Cruz 3, 28049 Madrid, Spain
| | - Francisco Javier Palomares
- Department of Nanoscience and Nanotechnology, Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC), Sor Juana Inés de La Cruz 3, 28049 Madrid, Spain
| | - Jhon Lehman Cuya Huaman
- Graduate School of Environmental Studies, Tohoku University, 6-6-20 Aramaki aza aoba, Aoba-ku, Sendai 980-8579, Japan
| | - Domingo F Barber
- Department of Immunology, and Oncology and Nanobiomedicine Initiative, Centro Nacional de Biotecnología (CNB-CSIC), Darwin 3, 28049 Madrid, Spain
| | - María Del Puerto Morales
- Department of Nanoscience and Nanotechnology, Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC), Sor Juana Inés de La Cruz 3, 28049 Madrid, Spain
| | - Jeyadevan Balachandran
- Graduate School of Environmental Studies, Tohoku University, 6-6-20 Aramaki aza aoba, Aoba-ku, Sendai 980-8579, Japan
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Qamar MT, Iqbal S, Aslam M, Alhujaily A, Bilal A, Rizwan K, Farooq HMU, Sheikh TA, Bahadur A, Awwad NS, Ibrahium HA, Almufarij RS, Elkaeed EB. Transition metal doped CeO 2 for photocatalytic removal of 2-chlorophenol in the exposure of indoor white light and antifungal activity. Front Chem 2023; 11:1126171. [PMID: 37201130 PMCID: PMC10186159 DOI: 10.3389/fchem.2023.1126171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Accepted: 03/08/2023] [Indexed: 05/20/2023] Open
Abstract
Besides natural sunlight and expensive artificial lights, economical indoor white light can play a significant role in activating a catalyst for photocatalytic removal of organic toxins from contaminated water. In the current effort, CeO2 has been modified with Ni, Cu, and Fe through doping methodology to study the removal of 2-chlorophenol (2-CP) in the illumination of 70 W indoor LED white light. The absence of additional diffractions due to the dopants and few changes such as reduction in peaks' height, minor peak shift at 2θ (28.525°) and peaks' broadening in XRD patterns of modified CeO2 verifies the successful doping of CeO2. The solid-state absorption spectra revealed higher absorbance of Cu-doped CeO2 whereas a lower absorption response was observed for Ni-doped CeO2. An interesting observation regarding the lowering of indirect bandgap energy of Fe-doped CeO2 (∼2.7 eV) and an increase in Ni-doped CeO2 (∼3.0 eV) in comparison to pristine CeO2 (∼2.9 eV) was noticed. The process of e -- h + recombination in the synthesized photocatalysts was also investigated through photoluminescence spectroscopy. The photocatalytic studies revealed the greater photocatalytic activity of Fe-doped CeO2 with a higher rate (∼3.9 × 10-3 min-1) among all other materials. Moreover, kinetic studies also revealed the validation of the Langmuir-Hinshelwood kinetic model (R2 = 0.9839) while removing 2-CP in the exposure of indoor light with a Fe-doped CeO2 photocatalyst. The XPS analysis revealed the existence of Fe3+, Cu2+ and Ni2+ core levels in doped CeO2. Using the agar well-diffusion method, the antifungal activity was assessed against the fungus M. fructicola and F. oxysporum. Compared to CeO2, Ni-doped CeO2, and Cu-doped CeO2 nanoparticles, the Fe-doped CeO2 nanoparticles have outstanding antifungal properties.
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Affiliation(s)
- M. Tariq Qamar
- Department of Chemistry, Forman Christian College (A Chartered University), Lahore, Pakistan
| | - Shahid Iqbal
- Department of Chemistry, School of Natural Sciences (SNS), National University of Science and Technology (NUST), Islamabad, Pakistan
- *Correspondence: Shahid Iqbal, ; Ali Bahadur, ; Eslam B. Elkaeed,
| | - M. Aslam
- Centre of Excellence in Environmental Studies (CEES), King Abdulaziz University, Jeddah, Saudi Arabia
| | - Ahmad Alhujaily
- Biology Department, College of Science, Taibah University, Al Madinah Al Munawarah, Saudi Arabia
| | - Anum Bilal
- Department of Chemistry, School of Natural Sciences (SNS), National University of Science and Technology (NUST), Islamabad, Pakistan
| | - Komal Rizwan
- Department of Chemistry, University of Sahiwal, Sahiwal, Pakistan
| | | | - Tahir Ali Sheikh
- Department of Chemistry, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Ali Bahadur
- Department of Chemistry, College of Science and Technology, Wenzhou-Kean University, Wenzhou, China
- *Correspondence: Shahid Iqbal, ; Ali Bahadur, ; Eslam B. Elkaeed,
| | - Nasser S. Awwad
- Chemistry Department, Faculty of Science, King Khalid University, Abha, Saudi Arabia
| | - Hala A. Ibrahium
- Biology Department, Faculty of Science, King Khalid University, Abha, Saudi Arabia
- Department of Semi Pilot Plant, Nuclear Materials Authority, El Maadi, Egypt
| | - Rasmiah S. Almufarij
- Department of Chemistry, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Eslam B. Elkaeed
- Department of Pharmaceutical Sciences, College of Pharmacy, AlMaarefa University, Riyadh, Saudi Arabia
- *Correspondence: Shahid Iqbal, ; Ali Bahadur, ; Eslam B. Elkaeed,
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5
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Díaz-Ufano C, Gallo-Cordova A, Santiandreu L, Veintemillas-Verdaguer S, Sáez R, Fernández MJT, del Puerto Morales M. Maximizing the Adsorption Capacity of Iron Oxide Nanocatalysts for the Degradation of Organic Dyes. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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6
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Ganjali F, Kashtiaray A, Zarei-Shokat S, Taheri-Ledari R, Maleki A. Functionalized hybrid magnetic catalytic systems on micro- and nanoscale utilized in organic synthesis and degradation of dyes. NANOSCALE ADVANCES 2022; 4:1263-1307. [PMID: 36133673 PMCID: PMC9418160 DOI: 10.1039/d1na00818h] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 01/19/2022] [Indexed: 05/06/2023]
Abstract
Herein, a concise review of the latest developments in catalytic processes involving organic reactions is presented, focusing on magnetic catalytic systems (MCSs). In recent years, various micro- and nanoscale magnetic catalysts have been prepared through different methods based on optimized reaction conditions and utilized in complex organic synthesis or degradation reactions of pharmaceutical compounds. These biodegradable, biocompatible and eco-benign MCSs have achieved the principles of green chemistry, and thus their usage is highly advocated. In addition, MCSs can shorten the reaction time, effectively accelerate reactions, and significantly upgrade both pharmaceutical synthesis and degradation mechanisms by preventing unwanted side reactions. Moreover, the other significant benefits of MCSs include their convenient magnetic separation, high stability and reusability, inexpensive raw materials, facile preparation routes, and surface functionalization. In this review, our aim is to present at the recent improvements in the structure of versatile MCSs and their characteristics, i.e., magnetization, recyclability, structural stability, turnover number (TON), and turnover frequency (TOF). Concisely, different hybrid and multifunctional MCSs are discussed. Additionally, the applications of MCSs for the synthesis of different pharmaceutical ingredients and degradation of organic wastewater contaminants such as toxic dyes and drugs are demonstrated.
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Affiliation(s)
- Fatemeh Ganjali
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology Tehran 16846-13114 Iran +98-21-73021584 +98-21-73228313
| | - Amir Kashtiaray
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology Tehran 16846-13114 Iran +98-21-73021584 +98-21-73228313
| | - Simindokht Zarei-Shokat
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology Tehran 16846-13114 Iran +98-21-73021584 +98-21-73228313
| | - Reza Taheri-Ledari
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology Tehran 16846-13114 Iran +98-21-73021584 +98-21-73228313
| | - Ali Maleki
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology Tehran 16846-13114 Iran +98-21-73021584 +98-21-73228313
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7
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Unravelling an amine-regulated crystallization crossover to prove single/multicore effects on the biomedical and environmental catalytic activity of magnetic iron oxide colloids. J Colloid Interface Sci 2021; 608:1585-1597. [PMID: 34742075 DOI: 10.1016/j.jcis.2021.10.111] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 09/20/2021] [Accepted: 10/18/2021] [Indexed: 11/23/2022]
Abstract
Elucidation of reaction mechanisms in forming nanostructures is relevant to obtain robust and affordable protocols that can lead to materials with enhanced properties and good reproducibility. Here, the formation of magnetic iron oxide monocrystalline nanoflowers in polyol solvents using N-methyldiethanolamine (NMDEA) as co-solvent has been shown to occur through a non-classical crystallization pathway. This pathway involves intermediate mesocrystals that, in addition, can be transformed into large single colloidal nanocrystals. Interestingly, the crossover of a non-classical crystallization pathway to a classical crystallization pathway can be induced by merely changing the NMDEA concentration. The key is the stability of a green rust-like intermediate complex that modulates the nucleation rate and growth of magnetite nanocrystals. The crossover separates two crystallization domains (classical and non-classical) and three basic configurations (mesocrystals, large and small colloidal nanocrystals). The above finding facilitated the synthesis of magnetic materials with different configurations to suit various engineering applications. Consequently, the effect of the single and multicore configurations of magnetic iron oxide on the biomedical (magnetic hyperthermia and enzyme immobilization) and catalytic activity (Fenton-like reactions and photo-Fenton-like processes driven by visible light irradiation) has been experimentally demonstrated.
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8
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Understanding MNPs Behaviour in Response to AMF in Biological Milieus and the Effects at the Cellular Level: Implications for a Rational Design That Drives Magnetic Hyperthermia Therapy toward Clinical Implementation. Cancers (Basel) 2021; 13:cancers13184583. [PMID: 34572810 PMCID: PMC8465027 DOI: 10.3390/cancers13184583] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 09/03/2021] [Accepted: 09/07/2021] [Indexed: 12/11/2022] Open
Abstract
Simple Summary Magnetic hyperthermia therapy is an alternative treatment for cancer that complements traditional therapies and that has shown great promise in recent years. In this review, we assess the current applications of this therapy in order to understand why its translation from the laboratory to the clinic has been less smooth than was anticipated, identifying the possible bottlenecks and proposing solutions to the problems encountered. Abstract Hyperthermia has emerged as a promising alternative to conventional cancer therapies and in fact, traditional hyperthermia is now commonly used in combination with chemotherapy or surgery during cancer treatment. Nevertheless, non-specific application of hyperthermia generates various undesirable side-effects, such that nano-magnetic hyperthermia has arisen a possible solution to this problem. This technique to induce hyperthermia is based on the intrinsic capacity of magnetic nanoparticles to accumulate in a given target area and to respond to alternating magnetic fields (AMFs) by releasing heat, based on different principles of physics. Unfortunately, the clinical implementation of nano-magnetic hyperthermia has not been fluid and few clinical trials have been carried out. In this review, we want to demonstrate the need for more systematic and basic research in this area, as many of the sub-cellular and molecular mechanisms associated with this approach remain unclear. As such, we shall consider here the biological effects that occur and why this theoretically well-designed nano-system fails in physiological conditions. Moreover, we will offer some guidelines that may help establish successful strategies through the rational design of magnetic nanoparticles for magnetic hyperthermia.
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9
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Ovejero JG, Armenia I, Serantes D, Veintemillas-Verdaguer S, Zeballos N, López-Gallego F, Grüttner C, de la Fuente JM, Puerto Morales MD, Grazu V. Selective Magnetic Nanoheating: Combining Iron Oxide Nanoparticles for Multi-Hot-Spot Induction and Sequential Regulation. NANO LETTERS 2021; 21:7213-7220. [PMID: 34410726 PMCID: PMC8431726 DOI: 10.1021/acs.nanolett.1c02178] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 08/11/2021] [Indexed: 05/11/2023]
Abstract
The contactless heating capacity of magnetic nanoparticles (MNPs) has been exploited in fields such as hyperthermia cancer therapy, catalysis, and enzymatic thermal regulation. Herein, we propose an advanced technology to generate multiple local temperatures in a single-pot reactor by exploiting the unique nanoheating features of iron oxide MNPs exposed to alternating magnetic fields (AMFs). The heating power of the MNPs depends on their magnetic features but also on the intensity and frequency conditions of the AMF. Using a mixture of diluted colloids of MNPs we were able to generate a multi-hot-spot reactor in which each population of MNPs can be selectively activated by adjusting the AMF conditions. The maximum temperature reached at the surface of each MNP was registered using independent fluorescent thermometers that mimic the molecular link between enzymes and MNPs. This technology paves the path for the implementation of a selective regulation of multienzymatic reactions.
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Affiliation(s)
- Jesus G. Ovejero
- Institute
of Materials Science of Madrid (ICMM-CSIC), Sor Juana Inés de la Cruz
3, 28049 Madrid, Spain
| | - Ilaria Armenia
- BioNanoSurf
Group, Aragon Nanoscience and Materials Institute (INMA-CSIC-UNIZAR),
Edificio I+D, Mariano
Esquillor Gómez, 50018 Zaragoza, Spain
| | - David Serantes
- Applied
Physics Department and Instituto de Investigacións Tecnolóxicas, Universidade de Santiago de Compostela, 15782 Santiago
de Compostela, Spain
| | | | - Nicoll Zeballos
- Heterogeneous
Biocatalysis Laboratory, Center for Cooperative
Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology
Alliance, Paseo de Miramón
194, 20014 Donostia-San
Sebastián, Spain
- IKERBASQUE,
Basque Foundation for Science, María Díaz de Haro 3, 48013 Bilbao, Spain
| | - Fernando López-Gallego
- Heterogeneous
Biocatalysis Laboratory, Center for Cooperative
Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology
Alliance, Paseo de Miramón
194, 20014 Donostia-San
Sebastián, Spain
- IKERBASQUE,
Basque Foundation for Science, María Díaz de Haro 3, 48013 Bilbao, Spain
| | - Cordula Grüttner
- Micromod,
Partikeltechnologie GmbH, Friedrich-Barnewitz-Straße 4, 18119 Rostock, Germany
| | - Jesús M. de la Fuente
- BioNanoSurf
Group, Aragon Nanoscience and Materials Institute (INMA-CSIC-UNIZAR),
Edificio I+D, Mariano
Esquillor Gómez, 50018 Zaragoza, Spain
- Centro
de Investigación Biomédica en Red de Bioingeniería,
Biomateriales y Nanomedicina (CIBER-BBN), Avenida Monforte de Lemos, 3-5, 28029 Madrid, Spain
| | - María del Puerto Morales
- Institute
of Materials Science of Madrid (ICMM-CSIC), Sor Juana Inés de la Cruz
3, 28049 Madrid, Spain
| | - Valeria Grazu
- BioNanoSurf
Group, Aragon Nanoscience and Materials Institute (INMA-CSIC-UNIZAR),
Edificio I+D, Mariano
Esquillor Gómez, 50018 Zaragoza, Spain
- Centro
de Investigación Biomédica en Red de Bioingeniería,
Biomateriales y Nanomedicina (CIBER-BBN), Avenida Monforte de Lemos, 3-5, 28029 Madrid, Spain
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10
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Ovejero JG, Gallo-Cordova A, Roca AG, Morales MP, Veintemillas-Verdaguer S. Reproducibility and Scalability of Magnetic Nanoheater Synthesis. NANOMATERIALS 2021; 11:nano11082059. [PMID: 34443890 PMCID: PMC8402135 DOI: 10.3390/nano11082059] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 08/07/2021] [Accepted: 08/10/2021] [Indexed: 01/15/2023]
Abstract
The application of magnetic nanoparticles requires large amounts of materials of reproducible quality. This work explores the scaled-up synthesis of multi-core iron oxide nanoparticles through the use of thermal decomposition in organic media and kilograms of reagents. To this end, we check the effect of extending the high temperature step from minutes to hours. To address the intrinsic variability of the colloidal crystallization nucleation process, the experiments were repeated and analyzed statistically. Due to the simultaneity of the nuclei growth and agglomeration steps, the nanostructure of the samples produced was a combination of single- and multi-core nanoparticles. The main characteristics of the materials obtained, as well as the reaction yields, were analyzed and compared. As a general rule, yield, particle size, and reproducibility increase when the time at high temperature is prolonged. The samples obtained were ranked in terms of the reproducibility of different structural, colloidal, and magnetic features. The capability of the obtained materials to act as nanoheaters in magnetic hyperthermia was assessed, showing a strong dependence on the crystallite size (calculated by X-ray diffraction), reflecting the nanoparticle volume with a coherent magnetization reversal.
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11
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Polyethylenimine-Modified Magnetic Chitosan for the Uptake of Arsenic from Water. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11125630] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The removal of heavy metals from water has become a global environmental problem. Various materials have been applied as adsorbent to remove metals from water. In this field, nanomaterials have been gaining increasing interest due to their exceptional properties. In this work, we discuss the synthesis of a core-shell structure nanocomposite by the modification of magnetic chitosan (CS) (Fe3O4/CS) with polyethylenimine (PEI) to produce Fe3O4/CS/PEI composite for the adsorption of arsenic ions (As(V) and As(III)) from aqueous solution. The synthesized materials were characterized using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), transmission electron microscope (TEM), and vibrating sample magnetometer (VSM). The results indicated the successful combination of three components of the nanocomposite. The adsorption conditions were optimized by studying the effect of different parameters included pH, contact time, initial concentration, and adsorbent dosage. The optimum adsorption pH was found to be 6.7 while the optimum adsorbent dosage was found to be 2.0 and 1.5 g/L for As(III) and As(V), respectively. The removal efficiency for the uptake of As(III) and As(V) ions over Fe3O4/CS/PEI nanocomposite at optimum conditions was found to be 99.5 and 99.7%, respectively. The experimental results were fitted using Freundlich’s and Langmuir’s isotherms. The data were more fitted to Langmuir isotherm providing a suggestion of monolayer adsorption with maximum adsorption capacity equal to 77.61 and 86.50 mg/g for the removal of As(III) and As(V), respectively. Moreover, linear regression coefficient (R2) indicated that the adsorption of arsenic ions over the synthesized magnetic nanocomposite obeyed pseudo 2nd order suggesting the chemisorption process. The reusability of the nanosorbent for arsenic uptake using sodium hydroxide as eluent was also assessed up to five cycles. Interestingly, Fe3O4/CS/PEI nanocomposite can be considered as a promising adsorbent for As ions’ removal from water and should be tested for the removal of other pollutants.
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