Results 41 to 50 of about 69,846 (270)

Ab Initio Study of Phase Stability in Doped TiO2

open access: yes, 2012
Ab-initio density functional theory (DFT) calculations of the relative stability of anatase and rutile polymorphs of TiO2 were carried using all-electron atomic orbitals methods with local density approximation (LDA).
Assadi, Mohammed H. N.   +4 more
core   +1 more source

All-inorganic core-shell silica-titania mesoporous colloidal nanoparticles showing orthogonal functionality [PDF]

open access: yes, 2011
Colloidal mesoporous silica (CMS) nanoparticles with a thin titania-enriched outer shell showing a spatially resolved functionality were synthesized by a delayed co-condensation approach.
Abe   +32 more
core   +1 more source

Role of Quantum-Confinement in Anatase Nanosheets [PDF]

open access: yesThe Journal of Physical Chemistry Letters, 2017
This document is the Accepted Manuscript version of a Published Work that appeared in final form in J. Phys. Chem. Lett. copyright American Chemical Society after peer review and technical editing by the publisher.
Varsano, D   +3 more
openaire   +7 more sources

Preparation and Investigation of the Thermal Stability of Phosphate-modified TiO2 Anatase Powders and Thin Films

open access: yesActa Chimica Slovenica, 2017
The temperature dependence of the anatase-to-rutile phase transition of TiO2 powders and thin films was studied. In order to shift the phase transition to higher temperature, samples were doped with a different amount of phosphate ions and their ...
Uroš Prah, Irena Kozjek Škofic
doaj   +1 more source

Anatase TiO$_2$ Nanowires Functionalized by Organic Sensitizers for Solar Cells : A Screened Coulomb Hybrid Density Functional Study [PDF]

open access: yes, 2015
The adsorption of two different organic molecules cyanidin glucoside (C$_{21}$O$_{11}$H$_{20}$) and TA-St-CA on anatase (101) and (001) nanowires have been investigated using the standard and the range separated hybrid density functional theory ...
Ellialtioglu, Sinasi   +4 more
core   +2 more sources

NH3 adsorption on anatase-TiO2(101) [PDF]

open access: yesThe Journal of Chemical Physics, 2018
The adsorption of ammonia on anatase TiO2 is of fundamental importance for several catalytic applications of TiO2 and for probing acid-base interactions. Utilizing high-resolution scanning tunneling microscopy (STM), synchrotron X-ray photoelectron spectroscopy, temperature-programmed desorption (TPD), and density functional theory (DFT), we identify ...
Stig Koust   +6 more
openaire   +3 more sources

Range separated hybrid exchange-correlation functional analyses of W and/or N(S) (co)doped anatase TiO_2

open access: yes, 2012
Electronic properties and atomic structures of W, N, S, W/N, and W/S dopings of anatase TiO_2 have been systematically investigated using the density functional theory (DFT).
Mete, Ersen, Çelik, Veysel
core   +1 more source

High-Pressure Study of Anatase TiO2 [PDF]

open access: yesMaterials, 2010
We report resistivity and thermo-electric power measurements of the anatase phase of TiO2under pressure up to 2.3 GPa. Despite its transparent appearance, the single crystal of anatase exhibits a metallic-like resistivity above 60 K, at all pressures.
Jaćimović, Jaćim   +5 more
openaire   +1 more source

Decoration of titania nanofibres with anatase nanoparticles as efficient photocatalysts for decomposing pesticides and phenols [PDF]

open access: yes, 2012
Using a series of partial phase transitions, an effective photocatalyst with fibril morphology was prepared. The catalytic activities of these materials were tested against phenol and herbicide in water. Both H-titanate and TiO2-(B) fibres decorated with
Frost, Ray   +3 more
core   +2 more sources

Atomic Size Misfit for Electrocatalytic Small Molecule Activation

open access: yesAdvanced Functional Materials, EarlyView.
This review explores the application and mechanisms of atomic size misfit in catalysis for small molecule activation, focusing on how structural defects and electronic properties can effectively lower the energy barriers of chemical bonds in molecules like H2O, CO2, and N2.
Ping Hong   +3 more
wiley   +1 more source

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