نتایج جستجو برای: titania phase

تعداد نتایج: 602176  

Abdollah Afshar Afrooz Latifi, Aliasghar Behnamghader Sedigheh Joughehdoust

     The synthesis of titania via sol-gel method has been widely studied. In the present work, titania was deposited onto a titanium substrat...

The nanostructured anatase TiO2 with high thermal stability was prepared by polymeric sol-gel method without any additives. The particle size distribution of polymeric titania sol was determined by dynamic light scattering (DLS). Then properties of obtained titania were investigated by TG-DTA, XRD, FESEM and TEM. Also, the decolorization capability of resultant anatase was evaluated using methy...

Journal: :Science and technology of advanced materials 2012
Juan L Vivero-Escoto Ya-Dong Chiang Kevin Wu Yusuke Yamauchi

This review article summarizes recent developments in mesoporous titania materials, particularly in the fields of morphology control and applications. We first briefly introduce the history of mesoporous titania materials and then review several synthesis approaches. Currently, mesoporous titania nanoparticles (MTNs) have attracted much attention in various fields, such as medicine, catalysis, ...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2004
Ikuma Kuroda Yukihiro Shintani Masanori Motokawa Shuzo Abe Masahiro Furuno

A methodology of phosphopeptide-selective analysis coupled with column-switching HPLC utilizing titania as precolumn media is presented. Phosphopeptides were selectively enriched on titania packing within a protein/peptide mixture without any additional procedure, and analyzed by column-switching high-performance liquid chromatography. First, phospho-compounds were separated from complex mixtur...

2014
Silvia Giudicatti Sonja M. Marz Lluís Soler Abbas Madani Matthew R. Jorgensen Samuel Sanchez Oliver G. Schmidt

Because of its unique properties, titania (TiO2) represents a promising candidate in a wide variety of research fields. In this paper, some of the properties and potential applications of titania within rolled-up nanotechnology are explored. It is shown how the structural and optical properties of rolled titania microtubes can be controlled by properly tuning the microfabrication parameters. Th...

Journal: :Dalton transactions 2017
Jijian Xu Zhangliu Tian Guoheng Yin Tianquan Lin Fuqiang Huang

Black titania prepared by metal-reduction methods is systematically studied and found the best controllable Mg-reduction method. Colored titania products from white, light blue, dark blue, to black were obtained with a crystalline/amorphous core-shell structure. The black titania shows a five times higher H2 production rate in photoelectrochemical (PEC) water splitting.

In this research, two series of ultra-low cement high alumina refractory castables containing 0 and 0.4 wt.% of nano-titania were prepared using different amounts of polycarbonic acid (DOLAPIX FF 26) as a dispersant. Several characteristics including microstructure, flowability, mechanical strength, bulk density and apparent porosity of the samples were analyzed. The results showed that the opt...

2014
Jong-Ho Kim Dong Lyun Cho Geon-Joong Kim Baoyu Gao Ho Kyong Shon

Titania is the most widely used metal oxide for the applications of pigments, paper, solar cells and environmental purification. In order to meet the demand of a large amount of titania, our group has developed a novel process which could significantly lower the cost of waste disposal in water treatment, protect the environment and public health and yield economically valuable titania. Titanium...

2017
Volodymyr O. Kotsyubynsky Ivan F. Myronyuk Volodymyr L. Chelyadyn Andriy B. Hrubiak Volodymyr V. Moklyak Sofia V. Fedorchenko

The phenomenological model of sulphate anions effect on the nanodispersed titania synthesis during hydrolysis of titanium tetrachloride was studied. It was proposed that both chelating and bridging bidentate complexes formation between sulphate anions and octahedrally coordinated [Ti(OH)h(OH2)6-h](4-h)+ mononers is the determinative factor for anatase phase nucleation.

Journal: :Chemical communications 2011
Ci Zhang Wen Qiu Hong Hu Ya Nan Guo Xue Qing Gong Shi Zhang Qiao Hua Gui Yang

Single-crystalline TiOF(2) crystals with cubical morphology were prepared via a facile solvothermal method and their transformation to anatase TiO(2) under different calcination conditions such as pure argon, moist argon and pure hydrogen sulfide (H(2)S) was explored by using XRD/Raman/UV-Vis/SEM/TEM/SAED. The non-metal sulfur doping was successfully fulfilled and the doped TiO(2) microcubes sh...

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