Publications by Danièle Laub | EPFL Graph Search

New evidence for TiO2 uniform surfaces leading to complete bacterial reduction in the dark: Critical issues

Juan Kiwi, César Pulgarin, Danièle Laub, Sami Rtimi, Jelena Nesic

This study presents new evidence for the events leading to Escherichia coil reduction in the absence of light irradiation on TiO2-polyester (from now on TiO2-PES. By transmission electron microscopy (TEM) the diffusion of TiO2 NP's aggregates with the E. c ...

Elsevier Science Bv2014

Combustion synthesis of cadmium sulphide nanomaterials for efficient visible light driven hydrogen production from water

Nicolas Xanthopoulos, Danièle Laub

Anion-doped cadmium sulphide nanomaterials have been synthesized by using combustion method at normal atmospheric conditions. Oxidant/fuel ratios have been optimized in order to obtain CdS with best characteristics. Formation of CdS and size of crystallite ...

Indian Acad Sciences2014

Flexible polymer TiO2 modified film photocatalysts active in the photodegradation of azo-dyes in solution

Michaël Bensimon, Juan Kiwi, Lioubov Kiwi, Danièle Laub

2008

Study of new sheep bone and Zn/Ca ratio around TiAlV screw: PIXE-RBS analysis

Philippe Buffat, Danièle Laub

This study reports on in vivo particle induced X-ray emission (PIXE) measurements combined with Rutherford backscattering spectroscopy (RBS) analyses of new remodeled sheep bone formed around TiAIV screws. The implants (screws) were anodized by a modified ...

2008

Photocatalytic discoloration of Methyl Orange on innovative parylene–TiO2 flexible thin films under simulated sunlight

Juan Kiwi, Lioubov Kiwi, Albert Renken, Danièle Laub

Parylene films loaded with TiO2 are reported as hotocatalysts in azo dye discoloration processes. The TiO2 loading of the parylene film was 0.32% (w/w) and the amount of TiO2 on the film was about two orders of magnitude below the TiO2 added in suspension ...

2008

Preparation, stabilization and characterization of TiO2 on thin polyethylene films (LDPE): Photocatalytic applications

Philippe Buffat, Juan Kiwi, Lioubov Kiwi, Andrzej Kulik, Albert Renken, Danièle Laub, Kyumin Lee

An innovative way to fix preformed nanocrystalline TiO2 on low-density polyethylene film (LDPE-TiO2) is presented. The LDPE-TiO2 film was able to mediate the complete photodiscoloration of Orange II using about seven times less catalyst than a TiO2 suspens ...

2007

ZnSO4-TiO2 Doped Catalyst with Higher Activity in Photoctalytic

Michaël Bensimon, Juan Kiwi, Lioubov Kiwi, Danièle Laub, Victor Sarria

2007

Accelerated photodegradation (minute range) of the commercial azo-dye Orange II mediated by Co3O4/Raschig rings in the presence of oxone

Michaël Bensimon, Lioubov Kiwi, Danièle Laub

The accelerated discoloration of Orange II by an innovative Co3O4/Raschig ring photocatalyst (from now on Co3O4/RR) is feasible and proceeds to completion using oxone as an oxidant within the surprisingly short time of ∼5 min. The preparation of Co3O4 smal ...

2007

Highly dispersed PTFE/Co3O4 flexible films as photocatalyst showing fast kinetic performance for the discoloration of azo-dyes under solar irradiation

Michaël Bensimon, Juan Kiwi, Lioubov Kiwi, Albert Renken, Danièle Laub

Small nanosized clusters of Co3O4 coated on PTFE (polytetrafluoroethylene) flexible film is reported as a novel supported photocatalyst effective in the fast discoloration of the azo-dye Orange II under simulated solar radiation in the presence of oxone (2 ...

2007

Synthesis of monodispersed palladium nanoparticles to study structure sensitivity of solvent-free selective hydrogenation of 2-methyl-3-butyn-2-ol

Lioubov Kiwi, Albert Renken, Danièle Laub

A novel method for isolation of monodispersed Pd nanoparticles from a reverse microemulsion was developed using hydrocarbon evaporation and methanol-assisted particle purification from a surfactant. Fcc Pd nanoparticles of 6, 8, 11, and 13 nm in diameter w ...

2007

Erratum to “Preparation, stabilization and characterization of TiO2 on thin polyethylene films (LDPE). Photocatalytic applications"

Philippe Buffat, Juan Kiwi, Lioubov Kiwi, Andrzej Kulik, Albert Renken, Danièle Laub, Kyumin Lee

2007

Nonthermal plasma Abatement of trichloroethylene Enhanced by Photocatalysis

Lioubov Kiwi, Albert Renken, Danièle Laub

Abatement of trichloroethylene (TCE, 250 ppm in air) was studied in a novel nonthermal plasma (NTP) dielectric barrier discharge reactor with an inner electrode made of sintered metal fibers (SMF). The SMF electrodes modified with TiO2 and MnO2 were observ ...

2007

Stabilization mechanism of TiO2 on flexible fluorocarbon films as a functional photocatalyst

Juan Kiwi, Lioubov Kiwi, Albert Renken, Danièle Laub

The repetitive discoloration kinetics of the azo-dye Methyl Orange (taken as a model organic compound) was followed under solar simulated radiation (90 mW/cm2) to assess the performance of the TiO2/Tedlar® composite photocatalyst. The influence of solution ...

2006

Self-Cleaning cotton textiles surfaces modified by photoactive SiO2/TiO2 coating

Lioubov Kiwi, Danièle Laub

The photocatalytic activity of TiO2–SiO2-coated cotton textiles was investigated through the self-cleaning of red wine stains. It was shown that a TiO2–SiO2 species could be produced at temperatures of 100 °C with acceptable photo-activity on non-heat resi ...

2006

Preparation and structural characterization of thin-film CdTe/CdS heterojunctions

Philippe Buffat, Danièle Laub

The structural characteristics of CdTe/CdS thin-film heterojunctions are investigated. The studied heterojunctions were obtained by successive thermal evaporation under vacuum onto unheated SnO2 coated glass substrates of CdS and CdTe films, respectively. ...

2006

Performance and characterization of Ag-cotton and Ag/TiO2 loaded textiles during the abatement of E. coli

Juan Kiwi, Hans Jörg Mathieu, César Pulgarin, Danièle Laub

The bacterial inactivation of Escherichia coli on Ag–cotton textiles were investigated under different experimental conditions with novel Ag-nanoparticles fixed on cotton textiles. The evaluation of the bactericide performance of the Ag–cotton was compared ...

2006

Low-dimensional chainlike assemblies of TiO2 nanorod-stabilized Au nanoparticles

Danièle Laub

Royal Society of Chemistry2005

Dynamics and characterization of an innovative Raschig rings-Ti02 composite photocatalyst

Michaël Bensimon, Juan Kiwi, Lioubov Kiwi, Andrzej Kulik, Danièle Laub, Raphaël Foschia

2005

Cross section investigations of compositions and sub-structures of tips obtained by focused electron beam induced deposition

Philippe Buffat, Danièle Laub, Johann Michler, Patrik Willi Hoffmann, Ivo Utke, Christian Santschi, Marco Cantoni

The spatial evolution of compositions and sub-structures inside focused-electron-beam-deposited tips from dicobalt-octacarbonyl Co2(CO)8 precursor at 25 keV and varying beam current (20 pA - 3 A) is extensively studied for the first time by means of energy ...

2005