Results 171 to 180 of about 635,198 (222)

Photochromic silver nanoparticles in titania

2006 International Conference on Nanoscience and Nanotechnology, 2006
In this article, we present our recent work on photochromic thin films made of silver nanoparticles embedded in titania. Using optical spectroscopy we measure the photochromic changes induced by laser irradiation at various power densities and irradiation times.
Christian Dahmen, Alexander N. Sprafke, Florian Hallermann, Matthias Wuttig, Gero von Plessen   +4 more
openaire   +1 more source

Nanoparticle routes to mesoporous titania thin films

Chemical Communications, 2001
Controlled aging of TiO2 nanoparticles blended with diblock copolymers and processed into dip-coated thin films led to ordered mesostructures with cubic and hexagonal symmetries that can be transformed into mesoporous TiO2 by calcination.
Y K, Hwang, K C, Lee, X U, Kwon
openaire   +2 more sources

Synthesis of Cerium-Doped Titania Nanoparticles and Nanotubes

Journal of Nanoscience and Nanotechnology, 2015
Cerium-doped titania nanoparticles and nanotubes were synthesized via hydrothermal processes. X-Ray Diffraction revealed that cerium-doped titania nanoparticles have an anatase crystal structure, while cerium-doped titania nanotubes have an H2Ti3O7-type structure.
Wei, Cao, Takuya, Suzuki, Hani E, Elsayed-Ali, Tarek M, Abdel-Fattah   +3 more
openaire   +2 more sources

Biomimetic synthesis of titania nanoparticles induced by protamine

Dalton Transactions, 2008
Protamine, a kind of cationic protein extracted from sperm nuclei, was employed for the first time in vitro to induce the formation of a titania/protamine nanoparticle composite from a water-stable titanium precursor, titanium(IV) bis(ammonium lactato) dihydroxide (Ti-BALDH).
Yanjun, Jiang, Dong, Yang, Lei, Zhang, Lin, Li, Qianyun, Sun, Yufei, Zhang, Jian, Li, Zhongyi, Jiang   +7 more
openaire   +2 more sources

Ethylene glycol-assisted coating of titania on nanoparticles

Dalton Transactions, 2016
Ethylene glycol can complex with titanium alkoxide to yield a chelated and stabilized titanium glycolate species that can be used as an excellent precursor for coating nanoscale colloidal objects. The titanium glycolate coating can be converted to crystalline TiO 2 either through high ...
Michael, Dahl, Fernando, Castaneda, Ji Bong, Joo, Victor, Reyes, James, Goebl, Yadong, Yin   +5 more
openaire   +2 more sources

Phase Transformations during Sintering of Titania Nanoparticles

ACS Nano, 2008
The size below which anatase nanoparticles become more stable than rutile nanoparticles (crossover diameter) is dependent on the environment of the nanoparticles. It is smaller for nanoparticles in vacuum than those in water and continues to decrease with increase in temperature.
Vishal N, Koparde, Peter T, Cummings
openaire   +2 more sources

Synthesis and Characterization of Titania-Coated Silver Nanoparticles

Journal of Nanoscience and Nanotechnology, 2004
Silver particles of 70 +/- 10 nm mean diameter were coated with uniform layers of amorphous titania by the hydrolysis and polycondensation process using titanium(IV) n-butoxide in aqueous solution. Because of the large dielectric function of titania, a shift to the longer wavelengths was observed for the plasmon resonance maximum of coated silver ...
Amar, Kumbhar, George, Chumanov
openaire   +2 more sources

Controlled Deposition of Gold Nanoparticles on Titania Support

Journal of Nanoscience and Nanotechnology, 2016
In our research, the commercial TiO2 (Degussa P25) was modified with gold nanoparticles (Au NPs) by reduction reaction with trisodium citrate. A remarkable influence of pH on particle size, size distribution and dispersion of Au on TiO2 support was observed. The size of Au NPs on TiO2 surface decreased with increase in the pH of the precursor solution.
Dung The, Nguyen, Kyo-Seon, Kim
openaire   +2 more sources

Magnetic-porous microspheres with synergistic catalytic activity of small-sized gold nanoparticles and titania matrix

Frontiers of Chemical Science and Engineering, 2019
Fe3O4 nanoparticles immobilized on porous titania in micron-size range were decorated with small-sized gold nanoparticles and used as a plasmonic catalyst for the reduction of 4-nitrophenol.
Kadriye Özlem Hamaloglu, Ali Tuncel, Cigdem Kip   +2 more
exaly   +2 more sources

The Structure of Multicomponent (Titania/Zirconia) Nanoparticles

Journal of Sol-Gel Science and Technology, 1998
The local structure of titania/zirconia nanoparticles has been investigated using small-angle neutron scattering (SANS). The colloids were prepared either by hydrolyzing a mixture of titanium and zirconium alkoxides, and peptizing the resulting hydrolysate with nitric acid (homogeneous) or hydrolyzing a titanium alkoxide, and peptizing the hydrolysate ...
Bartlett, J R, Gazeau, D, Zemb, Th, Woolfrey, J L   +3 more
openaire   +2 more sources