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Search for "iron" in Full Text gives 390 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.
Heat-induced transformation of nickel-coated polycrystalline diamond film studied in situ by XPS and NEXAFS
Beilstein J. Nanotechnol. 2025, 16, 887–898, doi:10.3762/bjnano.16.67
- coating of diamond surface with a metal catalyst has been explored to reduce the temperatures required for the initiation of the graphitization process. Nickel [17][18][19][20][21][22][23][24], iron [25][26][27][28], copper [29][30], gallium [31], and molybdenum [32] allow the fabrication of graphene-on
- indicates that the majority of graphite layers is predominantly located on the outermost surface of Ni-free diamond at a large angle, close to a right angle. A similar angular behavior of the NEXAFS spectrum was previously observed for the iron-coated (100) face of a polished SCD after vacuum annealing at
Synchrotron X-ray photoelectron spectroscopy study of sodium adsorption on vertically arranged MoS2 layers coated with pyrolytic carbon
Beilstein J. Nanotechnol. 2025, 16, 847–859, doi:10.3762/bjnano.16.64
- an aqueous solution of iron chloride (30 wt %) for 2 h to dissolve the copper foil. The remaining free PyC film was washed twice in dilute HCl (10 wt %) and then in deionized water until neutral pH was reached. The floating PyC film was trapped either on bare or MoS2-covered SiO2/Si substrates and
Facile one-step radio frequency magnetron sputtering of Ni/NiO on stainless steel for an efficient electrode for hydrogen evolution reaction
Beilstein J. Nanotechnol. 2025, 16, 837–846, doi:10.3762/bjnano.16.63
- electrocatalytic applications [30]. For instance, Wang et al. deposited nickel–iron on SS, which was used as a high-performance electrode for water oxidation [31]. Hence, in this study, we utilized commercial 304 SS and coated it with the Ni/NiO catalyst through a one-step radio frequency (RF) magnetron sputtering
Morphology and properties of pyrite nanoparticles obtained by pulsed laser ablation in liquid and thin films for photodetection
Beilstein J. Nanotechnol. 2025, 16, 785–805, doi:10.3762/bjnano.16.60
- Monterrey, Apodaca, Nuevo León, 66629, México Centro de Investigación en Innovación en Ingeniería Aeronáutica, Universidad Autónoma de Nuevo León, Carretera a Salinas Victoria K.M. 24.5, Apodaca, Nuevo León 66600, México 10.3762/bjnano.16.60 Abstract This work reports the synthesis of pyrite (iron
- synthesized by PLAL. FeS2 NPs were successfully synthesized in five different solvents, along with a minor phase of iron sulfide (FeS). Additionally, by combining electrophoretic deposition and spin-coating techniques, thin film photodiodes of FeS2 were fabricated on an n-type Si substrate utilizing the
- oxidizable sulfide ion coexist in iron sulfides, making their synthesis more difficult than that of iron oxide [17]. Unlike FeS2, there are reports on the synthesis of other iron-based oxides via PLAL. These studies have demonstrated the successful production of Fe3O4 nanoparticles by ablating iron plates in
Changes of structural, magnetic and spectroscopic properties of microencapsulated iron sucrose nanoparticles in saline
Beilstein J. Nanotechnol. 2025, 16, 762–784, doi:10.3762/bjnano.16.59
- Research, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland International Research Centre MagTop, Institute of Physics, Polish Academy of Sciences, Aleja Lotników 32/46, 02-668 Warsaw, Poland 10.3762/bjnano.16.59 Abstract The structural and physical properties of microencapsulated iron sucrose and their
- compounds and SiO2 are the major phases, while the iron phase was recognized as iron oxyhydroxide (FeOOH) (most probably the α polymorph). The dissolution procedure had significant influence on structural and physical properties of the investigated compound, such as lowering of the blocking temperature with
- completely dissolved sample. Keywords: calcium alginate; dissolution; iron oxyhydroxide nanoparticles; magnetic properties; saline; spectroscopy; Introduction Hematinic are substances such as iron, vitamin B12, and folic acid that are essential in the production of blood [1]. Iron deficiency drugs, which
Efficiency of single-pulse laser fragmentation of organic nutraceutical dispersions in a circular jet flow-through reactor
Beilstein J. Nanotechnol. 2025, 16, 711–727, doi:10.3762/bjnano.16.55
- iron phthalocyanines (FePc), but also some purely organic dyes such as naphthalocyanides [25], perylenes [26], perylene diimides [27][28], fullerenes [29][30], and quinacridones [2][31] have been successfully downsized to the nanoscale using nanosecond- and femtosecond-LFL with wavelengths in the UV
Focused ion and electron beams for synthesis and characterization of nanomaterials
Beilstein J. Nanotechnol. 2025, 16, 613–616, doi:10.3762/bjnano.16.47
- -phase investigations of molecular fragmentation by electron beams may not fully predict the behavior of molecules when adsorbed on a surface. This highlights the importance of comparing gas-phase fragmentation results with FEBIP processes. In this issue, the novel iron precursor (i.e., iron
Feasibility analysis of carbon nanofiber synthesis and morphology control using a LPG premixed flame
Beilstein J. Nanotechnol. 2025, 16, 581–590, doi:10.3762/bjnano.16.45
- optimization of CNT/CNF synthesis in flame environments. An ethylene/air co-flow, non-premixed flame was used with a catalyst substrate of iron, nickel, and platinum wires of 0.1–0.25 mm diameter. The study found that carbon monoxide is a major contributor to CNT formation in flames, and the model also showed
- temperatures of 550–650 °C [13]. Also, CNFs were produced by loading a stainless-steel autoclave with 7.50 mL of diethyl ether and a solution containing 1.00 g of zinc powder and 0.50 g of iron powder. The sealed autoclave was heated to 650 °C and kept overnight for the hydrothermal reaction. After cooling to
Nanomaterials in targeting amyloid-β oligomers: current advances and future directions for Alzheimer's disease diagnosis and therapy
Beilstein J. Nanotechnol. 2025, 16, 561–580, doi:10.3762/bjnano.16.44
- , these technologies also pave the way for developing therapeutic strategies aimed at inhibiting the formation of toxic AβOs. Liu et al. synthesized multifunctional superparamagnetic iron oxide nanoparticles (SPIONs) conjugated with a specific scFv antibody (W20) targeting AβOs and a class-A scavenger
Zeolite materials with Ni and Co: synthesis and catalytic potential in the selective hydrogenation of citral
Beilstein J. Nanotechnol. 2025, 16, 520–529, doi:10.3762/bjnano.16.40
- obtained by impregnation, the equivalent mole ratios are much higher mainly because of the large amount of chloride remaining on the surface. However, this does not mean that there are no Ni2+ and Co2+ cations occupying exchange positions. Note that chloride can also form salts with iron, sodium, and
Engineered PEG–PCL nanoparticles enable sensitive and selective detection of sodium dodecyl sulfate: a qualitative and quantitative analysis
Beilstein J. Nanotechnol. 2025, 16, 385–396, doi:10.3762/bjnano.16.29
- ) and Bradford reagent (Cat. No. 19219) were purchased from SRL Chemicals (India). NIST-grade standards of arsenic (As3+), aluminium (Al3+), cadmium (Cd2+), zinc (Zn2+), mercury (Hg2+), nickel (Ni2+), copper (Cu2+), chromium (Cr3+), lead (Pb2+), iron (Fe3+), and cobalt (Co2+) (Cat. No. 041865), as well
Emerging strategies in the sustainable removal of antibiotics using semiconductor-based photocatalysts
Beilstein J. Nanotechnol. 2025, 16, 264–285, doi:10.3762/bjnano.16.21
- endeavors have been undertaken, including the creation of heterojunctions or the introduction of metal doping. Wang et al. [84] synthesized BiOCl/Mt photocatalysts in which montmorillonite (Mt), which is naturally rich in iron, was combined with bismuth nitrate. According to the authors, the composite
Preferential enrichment and extraction of laser-synthesized nanoparticles in organic phases
Beilstein J. Nanotechnol. 2025, 16, 254–263, doi:10.3762/bjnano.16.20
- , changing the polarity of the non-polar solvent phase for the laser ablation of copper. Iron and copper stand in the middle of the investigated standard electrochemical reduction potential metal series and show quite interesting phase selectivity behavior. Moreover, cupreous nanoparticles are relevant for
- be in the less polar alcohol phase. In contrast to this behavior, copper and iron were not exclusively in one of the phases, but rather in both. With this, copper and iron represent the turning point in which the phase preference swaps from the more polar to the less polar liquid. Copper showed a
- higher mass concentration of nanoparticles in the more polar propylene carbonate phase, while iron preferred the less polar alcohol phase. If correlated to the standard electrochemical reduction potential E° (Figure 1b), a change in phase preference is visible after E° = 0 V is reached, resulting in
Radiosensitizing properties of dual-functionalized carbon nanostructures loaded with temozolomide
Beilstein J. Nanotechnol. 2025, 16, 229–251, doi:10.3762/bjnano.16.18
- , aggregation behavior, oxidation status, and metal impurities (e.g., iron) in correlation with the cell type and concentration of CNs to which the cells are exposed. The results of the actual study in which the cytotoxicity of blank and TMZ-loaded dual-functionalized CNs was evaluated by the MTT test are
Recent advances in photothermal nanomaterials for ophthalmic applications
Beilstein J. Nanotechnol. 2025, 16, 195–215, doi:10.3762/bjnano.16.16
- damage to surrounding tissues due to inadequate control over the heat distribution [100][101][102][103][104][105]. Innovations in this field have led to the development of transparent polylactic acid (PLA) thin films with embedded iron oxide nanoclusters prepared via spin coating [51]. The efficient
- photothermal conversion of iron oxide minimizes the necessary laser energy. The mechanical force generated by laser-induced VNBs enables the selective destruction of single corneal cells. The PLA films aid in precisely positioning the photothermal therapy, restrain the dispersion of iron oxide nanoclusters
- , and can be easily removed post-laser treatment. The spatially selective single-cell killing capability of iron oxide PLA bubble films has great potential for ocular tumor therapy. However, clinical treatment of tumors requires the application of films on surfaces with “odd” tissues. Using a
Nanocarriers and macrophage interaction: from a potential hurdle to an alternative therapeutic strategy
Beilstein J. Nanotechnol. 2025, 16, 97–118, doi:10.3762/bjnano.16.10
- such as iron and gold [4][5]. Each material is chosen for its unique properties, such as size, hydrophilicity, and charge, that make it suitable for acting as a drug carrier. NCs can be functionalized on their surface to improve the stability and solubility of high-payload encapsulated cargos, promote
- production, effectively reducing collagen type I deposition and mitigating fibrosis. Additional nanomaterials such as superparamagnetic iron oxide nanoparticles (SPIONs) and chitosan-based NPs are engineered with liver-cell-specific ligands like lactose or galactose, enhancing their specificity for treating
Theoretical study of the electronic and optical properties of a composite formed by the zeolite NaA and a magnetite cluster
Beilstein J. Nanotechnol. 2025, 16, 44–53, doi:10.3762/bjnano.16.5
- ][40] in bodies of water, addressing a pressing environmental concern. Also, iron-modified zeolites have shown variations in both electric and magnetic properties that allow one to generate catalysts based on zeolites [41]. Among these types of composites consisting of zeolites modified with magnetic
- Safe” [50] by the United States Food and Drug Administration [51]. Also, iron-based magnetic compounds have the advantage of being a widely available and relatively cheap material, as well as being biocompatible and environmentally friendly [52][53]. While the potential of magnetic clusters to impart
- . The trigonal cell has two α-cages and one β-cage, whereas the cubic cell has eight α-cages and four β-cages. In both cell representations, magnetite clusters are hosted in only half of the α-cages. The red and brown spheres in both clusters represent oxygen and iron atoms, respectively. Band structure
Fabrication of hafnium-based nanoparticles and nanostructures using picosecond laser ablation
Beilstein J. Nanotechnol. 2024, 15, 1639–1653, doi:10.3762/bjnano.15.129
- carbides by LAL in aromatic solvents was reported previously with transition metals such as iron and cobalt [54][55][56]. Kanitz et al. [55] have reported the formation of pure (i.e., with a clean surface) iron nanoparticles when the target was ablated with femtosecond pulses (5 kHz repetition rate, though
- ) in different solvents. They observed that the choice of the surrounding liquid environment allowed them to tune the properties of the iron-based NPs, for example, the generation of iron oxides or carbides. In the present case, the surrounding liquid possibly had a huge influence on the formation of
Liver-targeting iron oxide nanoparticles and their complexes with plant extracts for biocompatibility
Beilstein J. Nanotechnol. 2024, 15, 1593–1602, doi:10.3762/bjnano.15.125
- Biochemistry, Koryun St 2, Yerevan, Armenia Ghitu Institute of Electronic Engineering and Nanotechnologies of Technical University of Moldova, Chisinau, Moldova 10.3762/bjnano.15.125 Abstract Thanks to their simple synthesis, controlled physical properties, and minimal toxicity, iron oxide nanoparticles
- samples on the liver of Wistar rats was identified. Keywords: biocompatibility; hepatotoxicity; iron oxide (Fe3O4) nanoparticle; rutin; Teucrium polium (T. polium); Introduction Leveraging nanotechnology, personalized medicine, and interdisciplinary collaboration is essential for overcoming the complex
- in most biological and chemical reactions involved in the production of medical materials [10][11][12][13]. Magnetic nanoparticles (MNPs), such as iron oxides, not only exhibit superparamagnetism and high magnetic susceptibility, they also possess unique physical properties, biocompatibility
Facile synthesis of size-tunable L-carnosine-capped silver nanoparticles and their role in metal ion sensing and catalytic degradation of p-nitrophenol
Beilstein J. Nanotechnol. 2024, 15, 1576–1592, doi:10.3762/bjnano.15.124
- with a NIST-grade metal standard including arsenic (As3+), aluminum (Al3+), cadmium (Cd2+), zinc (Zn2+), mercury (Hg2+), nickel (Ni2+), copper (Cu2+), chromium (Cr3+), iron (Fe3+), molybdenum (Mo2+), and lead (Pb2+) were acquired from CDH Fine Chemicals. The chemicals were used without further
Effect of radiation-induced vacancy saturation on the first-order phase transformation in nanoparticles: insights from a model
Beilstein J. Nanotechnol. 2024, 15, 1453–1472, doi:10.3762/bjnano.15.117
- confirmed by calculations for iron particles under irradiation. Substances characterized by high vacancy migration energy, small diffusion coefficients of defects, and low temperatures of first-order phase transitions can serve as suitable candidates for radiation-induced phase transitions in nanosystems
- necessary to exclude the concentration of vacancies in the β phase (Cvβ) and the energy contribution of vacancies in the β phase (ΔGpd(β) = 0). Model of an iron-like nanomaterial with polymorphic phase transitions As an example, in this work we consider a model of an iron-like nanomaterial with a
- polymorphic phase transition, for which we will subsequently generalize to other cases by varying parameters. Bulk thermodynamic data for pure iron have been sourced from various references to compile the set of parameters [29][30][31][32][33][34][35][36][37][38][39][40][41]. At low and intermediate
Nanoarchitectonics with cetrimonium bromide on metal nanoparticles for linker-free detection of toxic metal ions and catalytic degradation of 4-nitrophenol
Beilstein J. Nanotechnol. 2024, 15, 1312–1332, doi:10.3762/bjnano.15.106
- -nitrophenol are both dangerous to humans [10][11]. Contamination with toxic heavy metal ions, including zinc, arsenic, aluminium, chromium, iron, cobalt, copper, nickel, mercury, cadmium, and lead, causes significant chronic damage to organ systems, beginning at the cellular level [12]. Toxic heavy metal ions
- also leads to undesirable side effects such as iron overload (hemochromatosis) and acute iron poisoning [14]. Similarly, other metals, including copper and cobalt, significantly damage different body parts above a threshold limit. Heavy metal ions pose a severe risk to human and environmental health
- chemicals, Finar and SRL chemicals, respectively. National Institute of Standard and Technology grade metal standards (1000 ppm) of arsenic (As3+), aluminum (Al3+), cadmium (Cd2+), zinc (Zn2+), mercury (Hg2+), nickel (Ni2+), copper (Cu2+), chromium (Cr3+), lead (Pb2+), iron (Fe3+), and cobalt (Co2+) were
Interaction of graphene oxide with tannic acid: computational modeling and toxicity mitigation in C. elegans
Beilstein J. Nanotechnol. 2024, 15, 1297–1311, doi:10.3762/bjnano.15.105
- C. elegans [35][54]. Oxidative stress is one of the central mechanisms and, in fact, the main cause of the toxicity outcomes discussed above. It is associated to changes in the function or expression of superoxide dismutase, “Rieske” iron-sulfur protein, mitochondrial complex I, and the ubiquinone
Enhanced catalytic reduction through in situ synthesized gold nanoparticles embedded in glucosamine/alginate nanocomposites
Beilstein J. Nanotechnol. 2024, 15, 1227–1237, doi:10.3762/bjnano.15.99
- challenge has spurred extensive research into various remediation methods. Recently, there has been growing interest in catalytic degradation using oxidizing agents such as H2O2 and iron in Fenton reactions [26], as well as reducing agents such as NaBH4 with nanometal catalysts. Additionally, the reduction
Realizing active targeting in cancer nanomedicine with ultrasmall nanoparticles
Beilstein J. Nanotechnol. 2024, 15, 1208–1226, doi:10.3762/bjnano.15.98
- , iron oxide, copper sulfide), and rare earth-based usNPs (cerium oxide, gadolinium oxide) [22]. Ultrasmall NPs have dimensions comparable to those of a typical globular protein of 3 to 6 nm in diameter [22][25], although the precise size criteria can vary among researchers. For the purpose of this
- comparison of the impact of NP size on the tumor accumulation and retention of actively targeted particles was undertaken by Xu and colleagues [87]. The authors synthesized transferrin-coated iron oxide NPs with core sizes of 3 and 30 nm and assessed their binding to transferrin receptors overexpressed in a
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