Fabrication and characterization of abrupt TiO2–SiOx core-shell nanowires by a simple heat treatment Alena Folger,1 Julian Kalb,2 Lukas Schmidt-Mende,2 and Christina Scheu,1,3,a 1Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Str. 1, 40237 Düsseldorf, Germany 2Department of Physics, University of Konstanz, P.O. Box 680, 78457 Konstanz, Germany 3Materials Analytics, RWTH Aachen Universi...

A template- and surfactant-free process, thermally assisted photoreduction, is developed to prepare vertically grown ultra-long Pt nanowires (NWs) (about 30-40 nm in diameter, 5-6 μm in length, and up to 80 NWs/100 μm2 in the wire density) on TiO2 coated substrates, including Si wafers and carbon fibers, with the assistance of the photocatalytic ability and semiconductor characteristics of TiO2...

Gold nanoparticles were prepared and characterized on protonated (H-form) titanate nanotubes (TiONTs) and nanowires (TiONWs). The chemical nature and morphology of gold particles were monitored by X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, X-ray diffraction (XRD) and high resolution electron microscopy (HRTEM). The optical properties of Au-containing titanate nanowires were exp...

Hydrothermally grown rutile TiO₂ nanowires are intrinsically full of lattice defects, especially oxygen vacancies. These vacancies have a significant influence on the structural and electronic properties of the nanowires. In this study, we report a post-growth heat treatment in different environments that allows control of the distribution of these defects inside the nanowire, and thus gives di...

Bronze phase TiO2 [TiO2(B)] has great research potential for sodium storage since it a higher theoretical capacity and ion mobility compared with other phases of TiO2. In this case, preparing porous TiO2(B) nanosheets, which can provide abundant insertion channels, is the most effective way to improve transport kinetics. Here, we use strong one-dimensional nanowires as matrix stringing these na...

We have prepared single crystalline SnO2 and ZnO nanowires and polycrystalline TiO2 nanotubes (1D networks) as well as nanoparticle-based films (3D networks) from the same materials to be used as photoanodes for solid-state dye-sensitized solar cells. In general, superior photovoltaic performance can be achieved from devices based on 3-dimensional networks, mostly due to their higher short circ...

At present, nanofilaments are not exclusively based on carbon atoms but can be produced from many inorganic materials in the form of nanotubes and nanowires. It is essential to systematically assess the acute toxicity of these newly synthesized materials since it cannot be predicted from the known toxicity of the same material in another form. Here, the cellular toxicity of TiO2-based nanofilam...

A brief review of our recent research on preparation and characterization oxide nanoparticles their derivatives by hydrothermal growth is presented. series Ga2O3 , ZnO, TiO2 nanoparticles, as well derivative nanomaterials including GaN nanowires ZnO/TiO2 nanocompostes have been prepared. ZnO nanopowders produced using metal nitrate hydrates precursors, while Titanium isopropoxide was used for n...

In the last few years nanostructure ZnO is being intensively investigated from the growth control, structural and physical characterization, to device performance. There are now increasing interests in a wide range of ZnO-based ternary compound nanostructures offering even larger possibilities. These compounds can be useful as multi-color light-emitting device, sensors, transparent electrodes, ...