Results 31 to 40 of about 77,736 (258)

VO2: A Novel View from Band Theory [PDF]

open access: yes, 2011
New calculations for vanadium dioxide, one of the most controversely discussed materials for decades, reveal that band theory as based on density functional theory is well capable of correctly describing the electronic and magnetic properties of the ...
Hao Wang   +3 more
core   +3 more sources

Effect of Metal Ions on Rutile Flotation and its Mechanism

open access: yesKuangchan zonghe liyong, 2023
Metal ions play an important role in rutile flotation, which can be divided into activation and inhibition. The activation ions include Pb2+, Bi3+ and Cu2+, and the inhibition ions include Al3+ and Fe3+.
Fangfang Liu, Hongjun Huang
doaj   +1 more source

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

TiO2 ceramics prepared using Pechini synthesis and laser sintering [PDF]

open access: yesProcessing and Application of Ceramics, 2018
Nowadays, the laser sintering process has attracted the attention of researchers owing to advantages such as the possibility of using very high heating and cooling rates and the possibility of sintering materials with high melting point.
Tiago Cordeiro Oliveira   +1 more
doaj   +1 more source

Phase-Selective Synthesis of Anatase and Rutile TiO2 Nanocrystals and Their Impacts on Grapevine Leaves: Accumulation of Mineral Nutrients and Triggering the Plant Defense

open access: yesNanomaterials, 2022
Titanium dioxide nanocrystals (TiO2 NCs), through their photocatalytic activity, are able to generate charge carriers and induce the formation of various reactive oxygen species (ROS) in the presence of O2 and H2O.
László Kőrösi   +3 more
doaj   +1 more source

Ecological and Health Risks from Trace Elements Contamination in Soils at the Rutile Bearing Area of Akonolinga, Cameroon

open access: yesApplied Sciences
This study evaluates the concentrations of trace elements (TEs) in soils from the rutile deposit area of Akonolinga, Cameroon, and analyzes the associated health risks. A total of 25 samples were analyzed using flame atomic absorption spectrometry (FAAS).
Fayette Kitcha Sime   +10 more
doaj   +1 more source

Atomic-resolution imaging of rutile TiO2(110)-(1 × 2) reconstructed surface by non-contact atomic force microscopy

open access: yesBeilstein Journal of Nanotechnology, 2020
The structure of the rutile TiO2(110)-(1 × 2) reconstructed surface is a phase induced by oxygen reduction. There is ongoing debate about the (1 × 2) reconstruction, because it cannot be clarified whether the (1 × 2) structure is formed over a wide area ...
Daiki Katsube   +3 more
doaj   +1 more source

The effect of sintering temperatures of TiO2(B)-nanotubes on its microstructure [PDF]

open access: yesScience of Sintering, 2018
Titanium dioxide (TiO2)-nanotubes were prepared by a simple technique reflux. The morphologies and microstructures of nanotubes were characterized by high resolution scanning electron microscopy (HRSEM), high resolution transmission electron ...
Sutrisno H., Siswani E.D., Budiasih K.S.
doaj   +1 more source

Preparation of TiO2 pigment from ilmenite ore concentrate by molten alkaline process

open access: yesVietnam Journal of Science, Technology and Engineering, 2023
TiO2 pigment production from an ilmenite concentrate via a molten alkaline process was investigated. The ilmenite concentrate (54.19% TiO2) was first roasted in the molten NaOH system at various temperatures ranging from 600 to 800°C while the mass ...
Thi Thao Nguyen   +4 more
doaj   +1 more source

Heteroepitaxial growth of ZnO branches selectively on TiO2 nanorod tips with improved light harvesting performance [PDF]

open access: yes, 2011
A seeded heteroepitaxial growth of ZnO nanorods selectively on TiO2 nanorod tips was achieved by restricting crystal growth on highly hydrophobic TiO2 nanorod film surfaces.
Gai, Lili   +4 more
core   +1 more source

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