Results 41 to 50 of about 9,726 (203)

Effects of the Brookite Phase on the Properties of Different Nanostructured TiO2 Phases Photocatalytically Active Towards the Degradation of N‐Phenylurea

open access: yesChemistryOpen, 2020
Different sol‐gel synthesis methods were used to obtain four nanostructured mesoporous TiO2 samples for an efficient photocatalytic degradation of the emerging contaminant N‐phenylurea under either simulated solar light (1 Sun) or UV light. Particularly,
Dr. Francesca S. Freyria   +6 more
doaj   +1 more source

First-Principles Investigation of Ru- and Pt-Doped TiO2 Brookite Surfaces

open access: yesInternational Journal of Electrochemical Science, 2020
The electronic structures and optical properties of brookite TiO2 (100) and (110) surfaces doped with transition metals (Ru and Pt) have been investigated by first-principles calculations based on the density functional theory, employing generalized ...
Ratshilumela Steve Dima   +2 more
doaj   +1 more source

High visible-light active Ir-doped-TiO2 brookite photocatalyst synthesized by hydrothermal microwave-assisted process [PDF]

open access: yes, 2014
Iridium-doped TiO2 having a brookite phase was synthesized as a visible light-active photocatalyst. It was prepared by using a hydrothermal assisted-microwave process as an improved competitive production method over the traditional hydrothermal process.
Menéndez-Flores Víctor M.   +1 more
core   +2 more sources

Crystallization of TiO2 polymorphs from RF-sputtered, amorphous thin-film precursors

open access: yesAIP Advances, 2020
Crystalline TiO2 films of anatase, brookite, and rutile are reproducibly made from amorphous precursors deposited by RF magnetron sputtering, producing large-area, single phase films of uniform thickness.
O. Agirseven   +12 more
doaj   +1 more source

Preparation and enhanced electrorheological properties of elastomers filled with rod-shaped TiO2 particles

open access: yesFrontiers in Materials, 2023
The morphology of dispersed particles has been proven to have a significant impact on performance of electrorheological (ER) materials, while there is a lack of relevant research on its impact on the properties of electrorheological elastomers (EREs). In
Gang Ti   +5 more
doaj   +1 more source

Sintering-Induced Phase Transformation of Nanoparticles: A Molecular Dynamics Study [PDF]

open access: yes, 2015
Sintering-induced phase transformation of TiO2 nanoparticles is investigated systematically via molecular dynamics simulation. Upon defining a coordination number and bond angle distribution criteria, local phase information is identified for each ...
Li, S, Luo, KH, Mao, Q, Ren, Y
core   +1 more source

Three-Phase Mixed Titania Powder Modified by Silver and Silver Chloride with Enhanced Photocatalytic Activity under UV–Visible Light

open access: yesNanomaterials, 2022
Pure and Ag/AgCl-modified titania powders with anatase/rutile/brookite three-phase mixed structure were prepared by one-step hydrothermal method. The effects of Ag/Ti atomic percentages on the structure and photocatalytic performance of TiO2 were ...
Xiaodong Zhu   +5 more
doaj   +1 more source

Brookite, the Least Known TiO2 Photocatalyst [PDF]

open access: yesCatalysts, 2013
Brookite is the least studied TiO2 photocatalyst due to the difficulties usually encountered in order to obtain it as a pure phase. In this review, a comprehensive survey of the different methods available for preparing brookite powders and films is reported.
Agatino Di Paola   +2 more
openaire   +1 more source

On the optical properties of Ag^{+15} ion-beam irradiated TiO_{2} and SnO_{2} thin films

open access: yes, 2012
The effects of 200-MeV Ag^{+15} ion irradiation on the optical properties of TiO_{2} and SnO_{2} thin films prepared by using the RF magnetron sputtering technique were investigated.
A. Fujishima   +33 more
core   +1 more source

Effect of titanium dioxide crystalline structure on the photocatalytic production of hydrogen [PDF]

open access: yes, 2011
The effect of the crystalline phase of TiO 2 (anatase, rutile and brookite) on its photocatalytic activity in hydrogen production from methanol-water vapours has been investigated by testing a series of both home-made and commercial TiO 2 photocatalysts,
Chiarello, G.   +3 more
core   +1 more source

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