Concept

Photocatalysis

Related publications (400)

Photocatalytic degradation of Remazol Brilliant Blue (R) by sol-gel derived carbon-doped TiO2

Ravindranathan Thampi, Michael Jon Mattle

A simple, cheap and reproducible method to produce a C-doped TiO2 photocatalyst is presented, which can harvest visible light. This doped catalyst is able to degrade a stable organic dye molecule, Remazol Brilliant Blue (R) (RBB), under sunlight and visibl ...

Elsevier Science Bv2013

Silicon protected with atomic layer deposited TiO2: conducting versus tunnelling through TiO2

Michael Graetzel, Stanley David Tilley

The present work demonstrates that tuning the donor density of protective TiO2 layers on a photocathode has dramatic consequences for electronic conduction through TiO2 with implications for the stabilization of oxidation-sensitive catalysts on the surface ...

Royal Soc Chemistry2013

Tunable Polaronic Conduction in Anatase TiO2

László Forró, Marco Grioni, Arnaud Magrez, Helmuth Berger, Luca Moreschini, Simon Karl Moser, Jacim Jacimovic

Oxygen vacancies created in anatase TiO2 by UV photons (80–130 eV) provide an effective electron-doping mechanism and induce a hitherto unobserved dispersive metallic state. Angle resolved photoemission reveals that the quasiparticles are large polarons. T ...

Amer Physical Soc2013

The Influence of the Ammonolysis Temperature on the Photocatalytic Activity of beta-TaON

Michael Graetzel, Takashi Hisatomi

Phase-pure tantalum oxynitride (beta-TaON) powders were synthesized by thermal ammonolysis of Ta2O5 powders. X-ray diffraction revealed an enlargement of the unit cell and an increase of the crystallite size with increasing ammonolysis temperature. Scannin ...

Hindawi Publishing Corporation2013

Highly efficient bacteria inactivation and phenol degradation by visible light irradiated iodine doped TiO2

László Forró, Andrzej Sienkiewicz, Klara Hernadi

In this study visible light active iodine doped titanium dioxide samples prepared by sol-gel method were investigated. Photocatalysts were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray fluorescence spectroscopy (XF ...

Elsevier Science Bv2013

Growth of TiO2/Cu films by HiPIMS for accelerated bacterial loss of viability

César Pulgarin, Juan Kiwi, Sami Rtimi, Oualid Baghriche

This study shows the first complete report on ultrathin TiO2/Cu nano-particulate films sputtered by highly ionized pulsed plasma magnetron sputtering (HIPIMS) leading to fast bacterial loss of viability. The Cu- and the TiO2/Cu sputtered films induced comp ...

Elsevier2013

RF-plasma pretreatment of surfaces leading to TiO2 coatings with improved optical absorption and OH-radical production

César Pulgarin, Juan Kiwi, Christophe Roussel, Sami Rtimi, Oualid Baghriche

Evidence is presented for the RF pretreatment of polyester enhances the TiO2 coating generation of oxidative species/radicals under a low level actinic light irradiation. After 30 min RF-plasma pretreatment of the polyester samples, the fastest bacterial i ...

Elsevier2013

Direct observation of charge separation on Au localized surface plasmons

Giulia Tagliabue, Mercedes Hannelore Rittmann-Frank, Fabio Giacomo Santomauro

Plasmonic nano-structures of d(10) metals are suggested to be the future of photo-voltaics and photo-catalysis under solar irradiation, thanks to their large light absorption cross-section, versatility, and stability. We investigated the impact of continuo ...

2013

Transient mid-IR study of electron dynamics in TiO2 conduction band

Majed Chergui, Michel Rossi, Mercedes Hannelore Rittmann-Frank, Fabio Giacomo Santomauro

The dynamics of TiO2 conduction band electrons were followed with a novel broadband synchrotron-based transient mid-IR spectroscopy setup. The lifetime of conduction band electrons was found to be dependent on the injection method used. Direct band gap exc ...

Royal Society of Chemistry2013

TiON and TiON-Ag sputtered surfaces leading to bacterial inactivation under indoor actinic light

César Pulgarin, Juan Kiwi, Michaël Bensimon, Sami Rtimi, Rosendo Sanjines, Oualid Baghriche

This study reports the details Escherichia coli inactivation kinetics on TiON and TiON-Ag films sputtered on polyester by direct current reactive magnetron sputtering (DC) and pulsed magnetron sputtering (DCP) in an Ar/N2 /O2 atmosphere. The use of TiON le ...

2013

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