Search results for " Core-shell"

showing 4 items of 4 documents

Electrodeposition and characterization of Mo oxide nanostructures

2015

Template electrodeposition has been used to grow uniform arrays of molybdenum oxide nanostructures in polycarbonate membrane. Several parameters have been investigated, like electrodeposition, time and solution pH. These parameters do not influence the nature of the deposit that always consists of mixed valence molybdenum oxides, whereas the nanostructure morphology changes with pH. In particular, at low pH (2.7), nanotubes are formed, whilst arrays of nanowires are obtained above pH 5.5. This change of morphology is likely due to H2 bubbles evolution during the electrochemical deposition, particularly occurring at low pH. It was found that fast removal of H2 bubbles through vigorous stirri…

lcsh:Computer engineering. Computer hardwaremetalNanostructure morphologieslcsh:TP155-156lcsh:TK7885-7895Molybdenum oxide metal Electrochemical deposition N-type conductivity Nanostructure morphologies Oxide nanostructures Photocurrent spectrum Photoelectrochemical measurements Photoelectrochemicals Polycarbonate membranesElectrochemical depositionPolycarbonate membranesMolybdenum oxidePhotoelectrochemical measurementsOxide nanostructuresSettore ING-IND/23 - Chimica Fisica ApplicataPhotocurrent spectrumPhotoelectrochemicalsN-type conductivitylcsh:Chemical engineeringMo oxide Core-shell nanostructures electrodeposition
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Electrodeposition and ILGAR process to obtain Ni-In2S3 core-shell nanowires

2013

Settore ING-IND/23 - Chimica Fisica ApplicataElectrodeposition ILGAR process Ni-In2S3 core-shell nanowires template synthesis
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Oxidation of silicon nanoparticles produced by ns laser ablation in liquids

2014

The investigation of nanoparticles produced by ns pulsed Nd:YAG laser ablation of silicon in liquids is reported. Combined characterization by morphological and structural techniques shows that these nanoparticles have a mean diameter of ~3 nm and a core-shell structure consisting of a Si-nanocrystal surrounded by a layer of oxidized Si. Time resolved luminescence spectra evidence visible and UV emissions: a broad band around 1.9 eV originates from Si-nanocrystals, while two bands centered at 2.7 eV and 4.4 eV are associated with oxygen deficient centers in the SiO2 shell.

laser ablation nanoparticles oxidation Si/SiO2 core-shell time-resolved luminescence
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Superparamagnetic recoverable flowerlike Fe3O4@Bi2O3 core–shell with g-C3N4 sheet nanocomposite: synthesis, characterization, mechanism and kinetic s…

2019

In the present research study, a simple method was developed for the synthesis of three-dimensional flowerlike Fe3O4@Bi2O3 core–shell with g-C3N4 sheet nanocomposites. The X-ray diffraction, Fourier transform infrared spectroscopy, scanning electronic microscopy, transmission electron microscope, vibrating sample magnetometer, dynamic laser scattering analyzer and UV–Vis diffuse reflection spectroscopy were employed for the characterization of structure, purity and morphology of the resultant samples. The degradation of indigo carmine as a model of organic dye pollutant is applied for photo-catalytic activity. The parameters which are affecting the efficiency of various parameters, such as;…

010302 applied physicsDiffractionNanocompositeMaterials scienceKineticsAnalytical chemistryElectronCondensed Matter Physics01 natural sciencesAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic Materialsflowerlike Fe3O4@Bi2O3 core-shell g-C3N4 superparamagnetic photocatalysischemistry.chemical_compoundIndigo carminechemistryTransmission electron microscopySettore CHIM/03 - Chimica Generale E Inorganica0103 physical sciencesSettore CHIM/07 - Fondamenti Chimici Delle TecnologieElectrical and Electronic EngineeringFourier transform infrared spectroscopySuperparamagnetism
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