Results 131 to 140 of about 5,928 (190)

Titania supported gold nanoparticles as photocatalyst

Phys. Chem. Chem. Phys., 2011
This Perspective is focused on the photocatalytic activity of gold nanoparticles supported on titania (Au/TiO(2)). Titania is the most widely used photocatalyst, but its limited activity under visible light irradiation has motivated the quest for modified titania materials absorbing visible light.
Primo Arnau, Ana Maria, Corma Canós, Avelino, García Gómez, Hermenegildo   +2 more
openaire   +3 more sources

Porous Titania Ionic Nanoparticle Networks

Langmuir, 2011
Titania nanoparticle networks were synthesized by the reaction between imidazole and alkyl halide functionalized anatase nanoparticles. The reaction produced imidazolium bridging units between the nanoparticles that were observed by the means of CP MAS (15)N NMR spectroscopy.
Neouze, Marie Alexandra, Litschauer, Marco, Puchberger, Michael, Peterlik, Herwig   +3 more
openaire   +3 more sources

Fabrication of silica-on-titania and titania-on-silica nanoparticle assemblies

Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2007
Abstract Structures of silica particles on a titania surface and titania particles on a silica surface were formed by deposition of SiO2 or TiO2 nanoparticles on pre-patterned substrates. Photolithography was used to create a matrix for the selective deposition of nanoparticles by immersion in a colloidal suspension.
A. Kanta, R. Sedev, J. Ralston
openaire   +1 more source

Laccase immobilization on titania nanoparticles and titania-functionalized membranes

Journal of Membrane Science, 2014
Bio-catalytic degradation of recalcitrant micropollutants with enzymes such as laccase provides an environmentally attractive alternative to the conventional filtration and adsorption processes. However, enzyme loss and denaturation remain key challenges for their potential use in water treatment applications.
Jingwei Hou, Guangxi Dong, Yun Ye, Vicki Chen   +3 more
openaire   +4 more sources

Gold−Titania Core−Shell Nanoparticles by Polyelectrolyte Complexation with a Titania Precursor

Chemistry of Materials, 2001
Core−shell colloids comprising gold nanoparticles and a uniform titania coating were prepared by the complexation of polyelectrolyte preassembled on the core particles with titanium(IV) bis(ammoniu...
Mayya, K., Gittins, D., Caruso, F.
openaire   +2 more sources

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

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

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