We report the highly stable supercapacitive performance of one-dimensional (1D) nanoneedles of brookite (b) TiO2 synthesized on a conducting glass substrate. The 1D b-TiO2 nanoneedles synthesized over a large area array utilizing hot-filament metal vapor deposition (HFMVD) were 24–26 nm wide, 650 nm long and tapered in a downward direction. X-ray photoemission spectroscopy (XPS) revealed their ...

Photocatalysis describes the excitation of titanium dioxide nanoparticles (a wide-band gap semiconductor) by UVA light to produce reactive oxygen species (ROS) that can destroy many organic molecules. This photocatalysis process is used for environmental remediation, while antimicrobial photocatalysis can kill many classes of microorganisms and can be used to sterilize water and surfaces and po...

TiO2 nanoparticles (NPs) were produced via utilized nanosecond laser ablation of titanium in water. The description these NPs was employed utilizing XRD, SEM, and UV-VIS. Then, optoelectronic properties investigated a drop-casting on the Si wafer substrate. XRD results show formation anatase TiO2. SEM exhibits spherical shape with sizing changing from 5 nm to 50 nm. bandgap 3.6 eV which determi...

Abstract Background: Photocatalytic process is used as a suitable method for o-chlorophenol removal. In this study, the efficiency of a mixture of modified fly ash and TiO2 nanoparticles in photocatalytic removal of o-chlorophenol was evaluated. Methods: After acid washing of fly ash, the absorbent was oxidized with potassium permanganate. ...

This study investigates the surface topography of deposited thin films versus distance between target and substrate (dTS) inside a laser ablation equipment. The profile rough was obtained by atomic force microscopy data analysis based on power spectral density roughness-length scale (RLS) functions. roughing top film is analyzed considering previous underneath for each consecutive TiO2 Si depos...

A magnetically-driven method for controlling nanodimensional porosity in sol-gel-derived metal–oxide films, including TiO2, Al2O3, and SnO2, coated onto ferromagnetic amorphous substrates, such as the magnetically-soft Metglas alloys, is described. On the basis of the porous structures observed dependence on external magnetic field, a model is suggested to explain the phenomena. Under well-defi...

A PVD coating is often applied on the surface of metallic alloys to improve their high-temperature resistance. In present work, a thin titanium layer (1.2 µm) was deposited by stainless steel substrate before exposure (800 °C in ambient air). The underlying idea that Ti converts into oxide (TiO2) during aging at 800 °C, thereby slowing down oxidation. stability with and without pre-oxidation in...

Cr2O3 and Cr2O3–SiO2-TiO2 coatings are deposited on P265GH steel using atmospheric plasma spraying. The influence of silicon oxide—titanium oxide addition the surface morphology coatings, phase composition tribological properties under non-lubricated sliding conditions investigated. SiO2-TiO2 led to formation a more uniform reduce roughness coatings. X-ray diffraction (XRD) studies indicated th...

Aalto University, P.O. Box 11000, FI-00076 Aalto www.aalto.fi Author Janne-Petteri Niemelä Name of the doctoral dissertation Thin Films of TiO2 and Related Oxides by ALD/MLD: Tailoring of Transport Properties Publisher School of Chemical Technology Unit Department of Chemistry Series Aalto University publication series DOCTORAL DISSERTATIONS 136/2015 Field of research Inorganic Chemistry Manusc...