A5001523365- Magnetic Properties and Synthesis of Ferrites
- Heavy metals in environment
- Electromagnetic wave absorption materials
- Iron oxide chemistry and applications
- Multiferroics and related materials
- Bone Tissue Engineering Materials
- Heavy Metals in Plants
- Pigment Synthesis and Properties
- Adsorption and biosorption for pollutant removal
- Analytical chemistry methods development
- biodegradable polymer synthesis and properties
- Radioactivity and Radon Measurements
- Biofuel production and bioconversion
- Water Quality and Pollution Assessment
- Fermentation and Sensory Analysis
- Dental Implant Techniques and Outcomes
- Concrete and Cement Materials Research
- Geochemistry and Geologic Mapping
- Water Quality Monitoring and Analysis
- Food composition and properties
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Graphene and Nanomaterials Applications
- Toxic Organic Pollutants Impact
- Mercury impact and mitigation studies
Research Institute for Analytical Instrumentation
2016-2025
National Institute of Research and Development for Optoelectronics
2020-2025
Babeș-Bolyai University
2017
University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca
2016
Gheorghe Asachi Technical University of Iași
2015
Institute for Analytical Instrumentation
2008
The structural, morphological and magnetic properties of MFe2O4 (M = Co, Ni, Zn, Cu, Mn) type ferrites produced by thermal decomposition at 700 1000 °C were studied. analysis revealed that the are formed up to 350 °C. After heat treatment °C, single-phase ferrite nanoparticles attained, while after CoFe2O4 was accompanied Co3O4 MnFe2O4 α-Fe2O3. particle size spherical shape in nanoscale region confirmed transmission electron microscopy. specific surface area below 0.5 m2/g suggested a...
In recent decades, environmental pollution has become a significant problem for human health and impact. The high accumulation of heavy metals in waters soils from different sources was conducted finding efficient environmentally friendly treatment methods materials their removal, respectively. Natural zeolites have found wide-ranging applications remediation protection, considering various modification designed to enhance the natural zeolites' adsorptive or ion-exchange capabilities...
The formation, structure, and thermal magnetic properties of MFe2O4@SiO2 (M = Co, Mn, Zn, Ni, Cu) (60% MFe2O4/40% SiO2) nanocomposites produced by a modified sol-gel method, followed annealing at 300, 600, 900 1200 °C, were studied. analysis Fourier transform infrared spectroscopy showed the formation metal-glyoxylates below 210 °C their decomposition into corresponding ferrite around 300 °C. evolution crystalline phases variation crystallite sizes differs from to depends on temperature....
This paper presents the synthesis of metal doped Co ferrites, M0.2Co0.8Fe2O4 (M = Cu2+, Ni2+, and Zn2+) embedded in SiO2 matrix by an innovative sol-gel route. The structural morphological characterization provided information about crystalline phases, crystallite size, shape prepared ferrites. thermal study depicted decomposition stability obtained X-ray diffraction indicated nanocrystalline ferrites with spinel structure lack phase impurities, while Fourier transform infrared spectroscopy...
This paper presents the influence of Mn2+ substitution by Ni2+ on structural, morphological and magnetic properties Mn1-xNixFe2O4@SiO2 (x = 0, 0.25, 0.50, 0.75, 1.00) nanocomposites (NCs) obtained a modified sol-gel method. The Fourier transform infrared spectra confirm formation SiO2 matrix ferrite, while X-ray diffraction patterns show presence poorly crystalline ferrite at low annealing temperatures highly mixed cubic spinel accompanied secondary phases high temperatures. lattice...
The effect of SiO2 embedding on the obtaining single-phase ferrites, as well structure, morphology and magnetic properties (Zn0.6Mn0.4Fe2O4)δ(SiO2)100−δ (δ = 0–100%) nanoparticles (NPs) synthesized by sol-gel method was assessed. phase composition crystallite size were investigated X-ray diffraction (XRD), chemical transformations monitored Fourier transform infrared (FT-IR) spectroscopy, while NPs transmission electron microscopy (TEM). average 5.3–27.0 nm at 400 °C, 13.7–31.1 700 °C...
The present study aimed to prepare nanofibers by electrospinning in the system polylactic acid-hydroxyapatite-doxycycline (PLA-HAP-Doxy) be used as a drug delivery vehicle. Two different routes were employed for preparation of Doxy-containing nanofibers: Immobilization on electrospun mat's surface and encapsulation fiber structure. obtained Doxy characterized using Fourier transform infrared (FTIR) spectroscopy, thermogravimetric (TG) differential thermal analyses (DTA) scanning electron...
Sol-gel route followed by thermal treatment was used to produce NiFe2O4 doped with transition metal ions (Zn2+, Mn2+, Co2+). The structural, morphological, and magnetic properties of the were compared those virgin NiFe2O4. metal-glyoxylates' formation decomposition as well stability ferrites assessed analysis. functional groups identified Fourier-transform infrared spectroscopy confirmed nitrates, precursors, SiO2 matrix. X-ray diffraction indicated that sol-gel synthesis produced...
Background: Metal transfer along the food chain has raised concerns about impacts on human health due to dietary exposure low but chronic concentrations. Soil–forage–milk–consumer is a short through which metals are able reach an organism. Methods: Pb, Cu, Cd, and Zn were determined in water, soil, forage, milk samples collected from free-range cattle farms situated near Baia Mare, Romania. The soil-to-forage (TFsf) forage-to-milk (TFfm) factors for risk three population groups (females,...
The structure, morphology and magnetic properties of (Ni0.6Mn0.4Fe2O4)α(SiO2)100-α (α = 0-100%) nanocomposites (NCs) produced by sol-gel synthesis were investigated using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), atomic force microscopy (AFM) vibrating sample magnetometry (VSM). At low calcination temperatures (300 °C), poorly crystallized Ni0.6Mn0.4Fe2O4, while at high temperatures, well-crystallized Ni0.6Mn0.4Fe2O4 was obtained along with α-Fe2O3, quartz,...