0000000000585493

AUTHOR

Mihael Maiorov

showing 3 related works from this author

Photocatalytic activity of anatase-nickel ferrite heterostructures

2015

The simple co-precipitation route was used to couple commercial TiO2 anatase nanopowder with nickel ferrite (NiFe2O4). The morphology and the crystalline structure of composite nanoparticles were characterised by TEM, N2 adsorption-desorption, XRD and Rietveld refinement, XPS and XAS. The optical and magnetic properties were investigated. After co-precipitation NiFe2O4 nanoparticles, composed of spinel ferrite crystal phase, were formed on the surface of TiO2 anatase nanopowder. The TiO2/NiFe2O4 composite oxide demonstrated large specific surface area, high visible light absorption efficiency and efficient charge carrier separation, compared to pristine anatase TiO2 or pristine NiFe2O4, rep…

AnataseX-ray absorption spectroscopyMaterials scienceRietveld refinementComposite numberNanoparticleMineralogySurfaces and InterfacesCondensed Matter PhysicsSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsChemical engineeringSpecific surface areaMaterials ChemistryPhotocatalysisFerrite (magnet)Electrical and Electronic Engineeringphysica status solidi (a)
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Facile synthesis of magnetically separable CoFe2O4/Ag2O/Ag2CO3 nanoheterostructures with high photocatalytic performance under visible light and enha…

2017

Riga Technical University supported the preparation of this manuscript from the Scientific Research Project Competition for Young Researchers No. ZP-2016/7. The authors wish to kindly acknowledge the financial support of HZB, Estonian Research Council (PUT1096, PUT735 and IUT2-25) and Estonian Centre of Excellence in Research Project “Advanced materials and high-technology devices for sustain-able energetics, sensorics and nanoelectronics” TK141 (2014–2020.4.01.15-0011).

Materials scienceMagneticNanoparticle02 engineering and technologyPhotocatalyticNanoheterostructures010402 general chemistryPhotochemistry01 natural sciencesSilver carbonatechemistry.chemical_compoundX-ray photoelectron spectroscopyPhase (matter):NATURAL SCIENCES:Physics [Research Subject Categories]Chemical Engineering (miscellaneous)PhotodegradationWaste Management and DisposalSilver carbonateta114Process Chemistry and Technology021001 nanoscience & nanotechnologyPollution0104 chemical scienceschemistryPhotocatalysis0210 nano-technologySilver oxideSilver oxideVisible spectrumJournal of Environmental Chemical Engineering
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Co doped ZnO nanowires as visible light photocatalysts

2016

Abstract High aspect ratio cobalt doped ZnO nanowires showing strong photocatalytic activity and moderate ferromagnetic behaviour were successfully synthesized using a solvothermal method and characterized by scanning electron microscopy (SEM), X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), X-ray absorption spectroscopy (XAS), vibrating sample magnetometry (VSM) and UV–visible absorption spectroscopy. The photocatalytic activities evaluated for visible light driven degradation of an aqueous methylene orange (MO) solution were higher than for Co doped ZnO nanoparticles at the same doping level and synthesized by the same synthesis route. The rate constant for MO visi…

X-ray absorption spectroscopyMaterials scienceAbsorption spectroscopyScanning electron microscopeDopingNanowire02 engineering and technologyGeneral Chemistry010402 general chemistry021001 nanoscience & nanotechnologyCondensed Matter PhysicsPhotochemistry01 natural sciences0104 chemical sciencesX-ray photoelectron spectroscopyPhotocatalysisGeneral Materials Science0210 nano-technologyVisible spectrumSolid State Sciences
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