A5052453806- Magnetic Properties and Synthesis of Ferrites
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Adsorption and biosorption for pollutant removal
- Nanomaterials for catalytic reactions
- Multiferroics and related materials
- Electromagnetic wave absorption materials
- Iron oxide chemistry and applications
- Graphene and Nanomaterials Applications
- Synthesis and biological activity
- Advanced Theoretical and Applied Studies in Material Sciences and Geometry
- Advanced Photocatalysis Techniques
- Metal complexes synthesis and properties
- Magnetic properties of thin films
- Magnetic Properties of Alloys
- Atmospheric Ozone and Climate
- Advanced oxidation water treatment
- Clay minerals and soil interactions
- Phenothiazines and Benzothiazines Synthesis and Activities
- Covalent Organic Framework Applications
- Magnetism in coordination complexes
- Carbon and Quantum Dots Applications
- Recycling and utilization of industrial and municipal waste in materials production
- Atmospheric chemistry and aerosols
- Layered Double Hydroxides Synthesis and Applications
National Institute of Research and Development for Technical Physics
2019-2024
Alexandru Ioan Cuza University
2018-2023
Gheorghe Asachi Technical University of Iași
2018-2020
Rhodes University
2011
This work evaluates the performance of graphene oxide (GO) - copper ferrite (CuFe2O4) nanohybrid in removal Congo Red (CR) dye from aqueous solutions. The adsorbent was prepared via a three-step method. Firstly, GO produced modified Hummers method, using graphite powder as starting material. Following this, surface treated with ionic surfactants, cetyltrimethylammonium bromide (CTAB) and poly(sodium-4-styrenesulfonate) (PSS). Subsequently, functionalized decorated magnetic CuFe2O4...
Abstract In this study the dyes used are Basic fuchsin and Methylene blue. The adsorption was studied in relation to metal ferrite, time of exposure dye concentration. highest adsorbtion capacity observed for MgFe 2 O 4 at a concentration 0.06 mM, percent 88% 3 hours. Desorption also by redispersion ethanol. main mechanism is thought be through electrostatic interaction, mainly due surfactant groups present on nanoparticles. nanoparticles have ferromagnetic behavior under magnetic field...
Abstract Nanocrystalline ferrites are known to be used in different applications, including industrial wastewater management. For environmental water issues, one of the most widely applied techniques is adsorption pollutants. The capacity Congo red ( CR ) dye on MF e 2 O 4 (M = Co 2+ , Mg Mn Ni and Zn ferrites, synthesized by coprecipitation method, was determined. Specific isotherms kinetic models were characterize process. Interesting results obtained for MgFe with ranging from 39% up 70%...
Wastes are the sustainable sources of raw materials for synthesis new adsorbent materials. This study has as objectives advanced capitalization fly ash, by sulphuric acid activation methods, and testing synthesized heavy metals removal. Based on previous studies, parameters were 1/3 s/L ratio, 80 °C temperature 10% diluted acid, which permitted an eco-friendly adsorbent. The prepared was characterized through SEM, EDX, FTIR, XRD BET methods. Adsorption studies carried out removal Cd2+ ions,...
Heat-resistant magnetic polymer composites were prepared by incorporating cerium-doped copper-nickel ferrite particles, having the general formula Ni1-xCuxFe1.92Ce0.08O4 (x: 0.0, 0.3, 0.6, 1.0), into a polyimide matrix. The effects of particle type and concentration on thermal, magnetic, electrical properties resulting investigated. samples characterized FTIR, scanning electron microscopy, X-ray diffractometry, thermogravimetric analysis, differential calorimetry, vibrating sample...
Novel hybrid inorganic CoFe2O4/carboxymethyl cellulose (CMC) polymeric framework nanobeads-type adsorbents with tailored magnetic properties were synthesized by a combination of coprecipitation and flash-cooling technology. Precise self-assembly engineering their shape composition combined deep testing for cadmium removal from wastewater are investigated. The development single nanoscale object controllable spatial arrangement CoFe2O4 (CF) nanoparticles in carboxymethyl as matrix, is giving...
The gas-phase IR absorption cross sections for 3-nitrocatechol, 5-methyl-3-nitrocatechol, 4-nitrocatechol and 4-methyl-5-nitrocatechol were evaluated using the ESC-Q-UAIC (the environmental simulation chamber made of quartz from “Alexandru Ioan Cuza” University Iasi, Romania) photoreactor facilities. Specific infrared absorptions integrated band intensities in range 650–4000 cm−1 investigated by long path FT-IR technique. Two different addition methods (solid liquid transfer methods)...
We present in this paper a direct and efficient study regarding synthesis spectral characterization of three series hybrid quinoline anchored with 4-R-benzenesulfonamide moiety, potential antimicrobial activity, by using ultrasound (US) irradiation conventional methods (CV). The pathway is direct, two steps: an initial N-acylation 8-aminoquinoline followed metal complexation variously M2+ metals (Cd2+, Co2+, Cu2+, Ni2+, Pd2+, Zn2+). For both type reactions, complexation, under US...
In this research, we reported on the formation of highly porous foam SrTiO
Only limited information is available in the literature on role of soil mineral surfaces sorption hydrophobic organic pollutants. This knowledge gap addressed through assessment biphenyl to kaolinite, illite and bentonite; using batch equilibration technique with incubations lasting 6 or 21 days at 28 ± 2°C dark [RT1]. Sorption onto kaolinite followed Freundlich isotherm, whereas linear isotherms were observed and bentonite [RT2]. The partition coefficient ranged from 0.1 9.1 cm3.g-1 after...
Misch Metal (MM)-Fe-B magnets are proposed to develop permanent with a high performance/cost ratio and balance the disproportionate use of rare earth (RE) resources. To improve magnetic performance ribbons precursors magnets, addition non-magnetic hafnium (Hf) was used. MM14Fe80−xHfxB6 (x = 0–3 at. %) were fabricated by melt-spinning technique at wheel velocity 35 m/s then annealed obtain nanocrystalline structure. The ribbons’ properties, morphology, structure investigated methodically. It...
The symmetry operations of a circular cylinder have been studied by unrolling the into plane. All possible classes and their symmetries are given. seventy-five groups and, as extreme cases, with infinite-fold axis those an infinite screw pitch derived illustrated.