نتایج جستجو برای: anatase phase

تعداد نتایج: 601378  

Journal: :Nanoscale research letters 2016
S Ivanov A Barylyak K Besaha A Bund Y Bobitski R Wojnarowska-Nowak I Yaremchuk M Kus-Liśkiewicz

One-step TiO2 nanoparticle synthesis based on the interaction between thiourea and metatitanic acid is applied for sulfur and carbon anatase codoping. The synthesis of the doped TiO2 has been monitored by means of differential thermal analysis and thermogravimetric analysis (DTA-TG), which allows determining the optimal thermal conditions for the process. Electron microscopy showed micrometer-s...

Journal: :Journal of Inorganic and Organometallic Polymers and Materials 2021

In the present research article, authors have experimentally evaluated shock wave resistant properties of technologically potential materials anatase and rutile phase TiO2 nanoparticles at dynamic loaded conditions. The behavior has been quantitatively drawn utilizing crystallographic stability test samples for which required information extracted from powder XRD patterns. Based on our observed...

Journal: :Analytical and bioanalytical chemistry 2002
D S Su

Electron beam induced changes in maximal valence transition metal oxides V(2)O(5), M(o)O(3) and TiO(2) (anatase) were studied by means of electron energy-loss spectroscopy and electron diffraction in transmission electron microscopy. For V(2)O(5), the observed chemical shifts of the L-edge reveal the reduction of V(5+) to V(2+). The structure changes from orthorhombic V(2)O(5) to cubic VO. MoO(...

Journal: :Journal of Physical Chemistry C 2021

Understanding charge-carrier transport in semiconductors is vital to the improvement of material performance for various applications optoelectronics and photochemistry. Here, we use hybrid density functional theory model small hole polaron anatase, brookite, TiO2-B phases titanium dioxide determine rates site-to-site hopping as well thermal ionization into valance band retrapping. We find that...

Journal: :Chemical communications 2011
Ci Zhang Wen Ji Zhi Zhou Hai Bo Jiang Qiu Hong Hu Shi Zhang Qiao Hua Gui Yang

A new synthetic strategy was developed to prepare large-sized well-defined anatase TiO(2) nanosheets wholly dominated with thermodynamically unfavorable high-reactive {001} and {100} facets, which has a percentage of 98.7% and 1.3%, respectively. The as-prepared anatase TiO(2) nanosheets show a well-faceted morphology and have a large size in length (ca. 4.14 μm). The formation mechanism of the...

Ali Mehrizad, Parvain Gharbani, Samad Motameni Tabatabii

The preparation of nano-sized TiO2 by titanium tetraisopropoxide (Ti(OiPr)4) via sol-gelmethod using acid as a catalyst is investigated and the optimized conditions concerning theproportional amount of acid, water, alcohol is established by XRD and SEM. The effect ofcalcination temperature on phase transformation of TiO2 (rutile, anatase and brookite) wasdetermined by XRD. The smallest grain si...

The photocatalytic coatings were prepared via incorporating the modified titania nanoparticles into epoxy-based inorganic-organic hybrid coatings. Titania nanoparticles were first synthesized from tetra-n-butyl titanate using sol-gel methods by two different calcination treatments, i.e., in mild condition (80°C) and 500°C. The formed anatase nanoparticles were further modified as Titania-Silica...

M. A. Faghihi Sani N. Barati

Uniform nanostructure coating of TiO2 was prepared on 316L stainless steel by sol-gel method using Tetra-n-Butyle Titanat (TBT) as alkoxide material. 316L specimens were coated with the mentioned sol by dip coating method. The influences of preparation condition, pH of sol on TiO2 nanostructure coating were investigated. Their structural properties were examined at var...

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