Article
Chemistry, Multidisciplinary
Joana Goncalves, Claudia Nunes, Liliana Ferreira, Maria Margarida Cruz, Helena Oliveira, Veronica Bastos, Alvaro Mayoral, Qing Zhang, Paula Ferreira
Summary: Fucoidan-coated magnetite nanoparticles exhibit great potential for magnetic hyperthermia therapy, showing high specific loss power and intrinsic loss power values while maintaining biocompatibility, meeting the required criteria for MHT application.
Article
Biochemistry & Molecular Biology
H. Maleki-Ghaleh, M. H. Siadati, A. Fallah, B. Koc, M. Kavanlouei, P. Khademi-Azandehi, E. Moradpur-Tari, Y. Omidi, J. Barar, Y. Beygi-Khosrowshahi, Alan P. Kumar, K. Adibkia
Summary: Bacteria can be effectively degraded by nanoparticles through electrostatic interactions, and incorporating antibacterial materials like zinc and graphene can further enhance bacterial degradation. Zinc-doped hydroxyapatite/graphene nanocomposite shows excellent antibacterial and bioactive properties for bone tissue engineering. The antibacterial activity along with cell biocompatibility and bioactivity make this nanocomposite highly desirable for bone tissue engineering.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Materials Science, Multidisciplinary
Shoronia N. Cross, Majed Fataftah, Antranik Jonderian, Eric McCalla, Amy Szuchmacher Blum
Summary: This paper describes a synthetic approach to producing ultra-small (approximately 6 nm), monodisperse oleic acid-capped cobalt-doped magnetite (CoxFe(3-x)O(4)) nanoparticles using a modified co-precipitation method under mild conditions. XPS analysis revealed compositions of Co0.12Fe2.88O4, Co0.33Fe2.67O4, and Co0.58Fe2.42O4 for stoichiometric amounts of Co corresponding to x = 0.1, 0.3, and 0.5, respectively. The resulting CoxFe(3-x)O(4) nanoparticles showed higher saturation magnetization values than those reported for CoxFe3-xO(4) nanoparticles of similar size, monodispersity, and Co content prepared by other methods.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Anastasiia S. Garanina, Alexey A. Nikitin, Tatiana O. Abakumova, Alevtina S. Semkina, Alexandra O. Prelovskaya, Victor A. Naumenko, Alexander S. Erofeev, Peter V. Gorelkin, Alexander G. Majouga, Maxim A. Abakumov, Ulf Wiedwald
Summary: The study demonstrates that cobalt ferrite MNPs functionalized with citrate ions show good biocompatibility in mice and rats, with no toxic effects at concentrations close to those used for efficient MHT. Additionally, these MNPs exhibit a high specific loss power and retain their magnetic properties inside tumor tissue after administration, providing a new avenue for tumor therapy.
Article
Physics, Multidisciplinary
Saee Gharpure, Rachana Yadwade, Shuana Mehmood, Balaprasad Ankamwar
Summary: The use of plant extracts for synthesizing zinc oxide nanoparticles has gained importance due to their easy, eco-friendly, cost-effective, and non-toxic nature. In this study, ZnO nanoparticles were successfully synthesized using almond leaf extracts, and their properties were characterized. The nanoparticles showed no microbicidal potential against various bacteria and fungi, and were non-toxic to HCT-116 carcinoma cells. These findings suggest that these ZnO nanoparticles can be used as safe tools in disease therapeutics due to their non-microbicidal and non-antineoplastic activities.
Article
Chemistry, Multidisciplinary
Adam Szatmari, Rares Bortnic, Gabriela Souca, Razvan Hirian, Lucian Barbu-Tudoran, Fran Nekvapil, Cristian Iacovita, Emil Burzo, Roxana Dudric, Romulus Tetean
Summary: Co1-xZnxFe2O4 nanoparticles (0 <= x <= 1) were synthesized via a green sol-gel combustion method, and their characteristics were studied using various techniques. The nanoparticles showed high crystallinity and exhibited a cubic Fd-3m structure. The presence of cobalt, zinc, iron, and oxygen in the samples was confirmed through EDS analysis. Raman spectra revealed the preferential location of Zn ions in T sites for low Zn concentrations. The magnetic properties of the nanoparticles were discussed based on the Raman results, showing an increase in magnetization with increasing Zn content for x < 0.5. Co ferrite doped with 30% Zn exhibited the highest SAR values, which increased linearly with H from 20 to 60 kA/m.
Article
Engineering, Electrical & Electronic
G. Nandhini, S. Kavita, T. Pazhanivel, M. K. Shobana
Summary: Spinel cobalt ferrite nanoparticles with different structural properties were synthesized using sol-gel combustion technique. The magnetic parameters of the samples varied with temperature increase, and the highest degradation efficiency of methylene blue dye was observed for the sample treated at 500°C for 45 min.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Physical
Madalina Andreea Badea, Mihaela Balas, Marcela Popa, Teodora Borcan, Anamaria-Cristina Bunea, Daniela Predoi, Anca Dinischiotu
Summary: This study investigated the biological response and antimicrobial activity of hydroxyapatite (HAp) and zinc-doped HAp (ZnHAp) in human gingival fibroblasts. The ZnHAp powders synthesized by the sol-gel method showed a crystallographic structure similar to pure HA and a uniform dispersion of zinc ions. Antimicrobial studies revealed inhibition of bacterial adherence to the substrate. In vitro biocompatibility tests showed decreased cell viability after exposure to HAp and ZnHAp, but no inflammatory response was induced.
Review
Nanoscience & Nanotechnology
Md Al Mamun, K. M. Jalal Uddin Rumi, Harinarayan Das, S. Manjura Hoque
Summary: The review discussed the synthesis and application of silica-coated magnetite nanoparticles, highlighting the advantages and disadvantages of different synthesis methods and the required properties for various applications. It emphasized the importance of proper process selection for desired properties and the potential of SMNP in biomedical, environmental, construction, and nuclear fields.
Article
Crystallography
Mohamed S. A. Darwish
Summary: This study fabricated a series of photocatalysts based on magnetic ferrite nanostructures using a two-step co-precipitation technique. The fabricated magnetic photocatalysts were characterized using various methods. The results showed that MNPs exhibited outstanding performance as magnetic photocatalysts for the water-splitting process.
Article
Chemistry, Physical
Pedro A. Calderon Bedoya, Pablo M. Botta, Paula G. Bercoff, Maria A. Fanovich
Summary: Iron oxide nanoparticles were successfully prepared via mechanochemical synthesis from three different reactive systems. The study investigated the effects of various iron salts and metallic iron on the properties of the nanoparticles, and determined high magnetization of the obtained iron oxide nanoparticles across a range of temperatures. The presence of metallic iron was found to be crucial in the formation of magnetic phases in the nanoparticles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Arunima Rajan, Beata Kaczmarek-Szczepanskac, Niroj Kumar Sahu
Summary: In this study, iron oxide nanoparticles with high crystallinity and hydrophilicity were synthesized, showing improved specific loss power in hyperthermia tests. The nanoparticles exhibited concentration-dependent effects with anticancer activity towards cancer cells and biocompatibility towards normal cells. Additionally, minimal damage to erythrocyte membrane was induced by the nanoparticles.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Biochemistry & Molecular Biology
Cristina Chircov, Maria-Andreea Minca, Andreea Bianca Serban, Alexandra Catalina Birca, Georgiana Dolete, Vladimir-Lucian Ene, Ecaterina Andronescu, Alina-Maria Holban
Summary: This study aimed to develop zinc and/or cerium-substituted magnetite nanoparticles for medical applications. The nanostructures were evaluated using various analysis methods and subjected to antioxidant, anticancer, and antimicrobial tests. The results showed promising effects, including the inhibition of oxidative stress in normal cells, inhibition of cell proliferation in tumor cells, and antimicrobial activity.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Apichaya Worawong, Wandee Onreabroy
Summary: Chitosan-coated Co0.5Zn0.5Fe2O4 nanoparticles were successfully synthesized and treated under an external magnetic field. The results showed that the chitosan-coated Co0.5Zn0.5Fe2O4 nanoparticles had a pure phase of Co0.5Zn0.5Fe2O4 and had a higher brightness in MRI compared to using gadolinium.
Article
Chemistry, Multidisciplinary
Alberto Curcio, Aurore Van de Walle, Emilia Benassai, Aida Serrano, Nathalie Luciani, Nicolas Menguy, Bella B. Manshian, Ara Sargsian, Stefaan Soenen, Ana Espinosa, Ali Abou-Hassan, Claire Wilhelm
Summary: Despite potential adverse biological outcomes, the intracellular bioprocessing of CuS nanoparticles reshapes them into bioengineered nanostructures without compromising their photothermal function and therapeutic potential, as supported by synchrotron X-ray absorption spectroscopy measurements.
Article
Geochemistry & Geophysics
Agnes Kontny, Magnus Schneider, Elisabeth Eiche, Emiliano Stopelli, Martyna Glodowska, Bhasker Rathi, Joerg Goettlicher, James M. Byrne, Andreas Kappler, Michael Berg, Duyen Vu Thi, Pham T. K. Trang, Pham H. Viet, Thomas Neumann
Summary: Iron minerals play a crucial role in hosting arsenic in As-contaminated deltaic sediments, leading to a severe health threat for millions of people worldwide. By analyzing the geochemistry and mineralogy of sediment cores from the Red River delta in Vietnam, this study provides new insights into the complex dynamics of arsenic mobilization in reducing aquifers of South and Southeast Asia.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Review
Nanoscience & Nanotechnology
Matthias Schmidt, James M. Byrne, Ilari J. Maasilta
Summary: Helium-ion microscopy (HIM) is a high-resolution imaging technique capable of resolving some of the tiniest structures in biology. By using helium ions instead of electrons, HIM offers higher surface sensitivity and larger depth of field, making it a powerful tool for imaging biological samples.
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
(2021)
Article
Engineering, Environmental
Marjorie Etique, Sylvain Bouchet, James M. Byrne, Laurel K. ThomasArrigo, Ralf Kaegi, Ruben Kretzschmar
Summary: The study investigates the chemical synthesis and Hg-II reduction ability of nanoparticulate vivianite, finding that vivianite has a similar reduction ability to other effective Hg-II reducing minerals. It suggests that vivianite may play a role in Hg removal and MeHg formation limitation in environments rich in Fe and organic matter.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Geochemistry & Geophysics
Xiaohua Han, Elizabeth J. Tomaszewski, Ronny Schoenberg, Kurt O. Konhauser, Matthieu Amor, Yongxin Pan, Viola Warter, Andreas Kappler, James M. Byrne
Summary: This study compared the behavior of zinc and nickel in magnetite produced under abiotic and biotic conditions, revealing enrichment differences between the two inorganic and biological magnetites. By reconstructing potential zinc and nickel partition coefficients between Precambrian seawater and magnetite minerals, it was suggested that the magnetite minerals in question were of abiotic origin. These findings indicate the potential use of zinc and nickel partition coefficient ratios as a means of distinguishing between the presence or absence of biogenic processes in the formation of ancient magnetite deposits.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Chemistry, Analytical
Ana Diaz-Fernandez, Elena Bernalte, Carlos Fernandez-Ramos, Sandhya Moise, Pedro Estrela, Mirella Di Lorenzo
Summary: Y chimeric antigen receptor T (CAR-T) cell therapy has revolutionized cancer treatment. Online biosensors can monitor the effectiveness of engineered CAR-T cells in real time without the need for offline analysis or specialized personnel. This study presents an innovative label-free immunosensor that can detect CD34(+) T-cells in human serum, demonstrating high selectivity and applicability for clinical use.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Multidisciplinary
Afeesh Rajan Unnithan, Arathyram Ramachandra Kurup Sasikala, Bishnu Kumar Shrestha, Alex Lincoln, Thomas Thomson, Alicia J. El Haj
Summary: Non-invasive approaches using remotely controllable nanomaterials, such as the developed GOMNP composite, have shown potential in enhancing treatment efficacy in regenerative medicine and tissue repair. Remote activation of mechanotransduction pathways through functionalized GOMNPs has led to enhanced bone formation.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Geochemistry & Geophysics
James M. Byrne, Andreas Kappler
Summary: Short-range-ordered Fe(III) minerals like ferrihydrite play a crucial role in environmental processes, but their X-ray amorphous nature necessitates the use of spectroscopic methods for accurate identification and quantification. This study addresses inconsistencies in fitting Fh with Mossbauer spectroscopy and proposes a standardized approach.
AMERICAN MINERALOGIST
(2022)
Article
Hematology
David Cabrera, Maneea Eizadi Sharifabad, Jacob A. Ranjbar, Neil D. Telling, Alan G. S. Harper
Summary: This study developed clot-targeting magnetic nanoparticles and used magnetic hyperthermia to enhance tPA-mediated thrombolysis of contracted human blood clots. The clot-targeted magnetic hyperthermia increased the permeability of the clots to tPA, facilitating their breakdown. Importantly, endothelial cell viability was unaffected by the clot-targeted magnetic hyperthermia.
JOURNAL OF THROMBOSIS AND HAEMOSTASIS
(2022)
Article
Environmental Sciences
Timm Bayer, Elizabeth J. Tomaszewski, Casey Bryce, Andreas Kappler, James M. Byrne
Summary: In this study, a chemostat was used to investigate the autotrophic nitrate-reducing Fe(II)-oxidizing culture KS over 24 days. The results showed that the Fe(II) oxidation rate was highest in the chemostat, but the extent of oxidation was similar to the other experimental setups. Short-range ordered Fe(III) phases and goethite were detected in the chemostat. The study revealed the importance of reactive nitrogen intermediates on Fe(II) oxidation, mineral formation, and cell-mineral interactions under continuous conditions.
ENVIRONMENTAL MICROBIOLOGY REPORTS
(2023)
Article
Astronomy & Astrophysics
Matthew J. Roche, Mark G. Fox-Powell, Rachael E. Hamp, James M. Byrne
Summary: Recent studies have explored the metabolic pathways in Enceladus' ocean, suggesting the existence of methane generation driven by hydrothermal activity. This study investigates whether microbial iron reduction could occur in the ocean, and demonstrates the possibility of biogeochemical iron cycling in Enceladus' ocean.
INTERNATIONAL JOURNAL OF ASTROBIOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Timm Bayer, Ran Wei, Andreas Kappler, James M. Byrne
Summary: The adsorption capacity and overall efficiency of mixed-valent magnetite nanoparticles (MNPs) for heavy metal pollutants are influenced by their redox state and surface charge, which are affected by microbial redox cycling of iron (Fe) in magnetite and changes in pH. Microbial modification of MNPs has an important impact on the adsorption of Cu2+ and Cd2+, and a change in stoichiometry of the MNPs can have a greater influence than a change of pH.
ACS EARTH AND SPACE CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Carmen Abia, Carlos A. Lopez, Javier Gainza, Joao Elias F. S. Rodrigues, Maria T. Fernandez-Diaz, Eva Cespedes, Jose Luis Martinez, Jose Antonio Alonso
Summary: The search for lead-free materials for optoelectronic applications is a current research focus in the field of environment-friendly energy transition. In this study, we investigated the substitution of toxic Pb2+ with Cu2+ in all-inorganic CsPbBr3 perovskite, and explored the CsCuBr3 halide with little previous research. A mechanically-synthesized CsCuBr3 specimen was obtained and characterized by calorimetric and structural analysis techniques. The results revealed a structural phase transition and the presence of magnetic coupling between Cu2+ spins.
Article
Multidisciplinary Sciences
K. Dhillon, K. Aizel, T. J. Broomhall, E. Secret, T. Goodman, M. Rotherham, N. Telling, J. M. Siaugue, C. Menager, J. Fresnais, M. Coppey, A. J. El Haj, M. A. Gates
Summary: This study presents a novel approach to control the directional growth of neuronal outgrowth using magnetic nanoparticles and a magnetic array. The results show the viability of this approach in both in vitro and ex vivo models, and highlight its potential for developing new therapies for Parkinson's disease.
JOURNAL OF THE ROYAL SOCIETY INTERFACE
(2022)
Article
Materials Science, Multidisciplinary
R. S. Silva Jr, J. Gainza, J. E. Rodrigues, L. Martinez, E. Cespedes, N. M. Nemes, J. L. Martinez, J. A. Alonso
Summary: In this study, FexTi2S4 polycrystalline materials were prepared using a rapid high-pressure method, and their crystal structure and magnetic properties were investigated. The results revealed a Fe/Ti inversion in the TiS2 layers and different magnetic behaviors depending on the Fe content. Furthermore, the material exhibited better relative cooling power and temperature stability compared to other transition metal sulfides reported in the literature.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Inorganic & Nuclear
James Everett, Jake Brooks, Joanna F. Collingwood, Neil D. Telling
Summary: Iron is a vital trace element for healthy brain function, but its disrupted neurochemistry and interaction with beta-amyloid (Aβ) have been implicated in the development of degenerative brain disorders like Alzheimer's disease (AD). This study utilized nanoscale resolution imaging to observe the variations in iron oxidation state and the organic composition of Aβ, demonstrating a potential link between altered iron chemistry and neurodegenerative processes in AD.
INORGANIC CHEMISTRY FRONTIERS
(2021)