نتایج جستجو برای: titanum dioxide tio2

تعداد نتایج: 115387  

2016
Janine Moll Annette Okupnik Alexander Gogos Katja Knauer Thomas D. Bucheli Marcel G. A. van der Heijden Franco Widmer

Titanium dioxide nanoparticles (TiO2 NPs) are in consideration to be used in plant protection products. Before these products can be placed on the market, ecotoxicological tests have to be performed. In this study, the nitrogen fixing bacterium Rhizobium trifolii and red clover were exposed to two TiO2 NPs, i.e., P25, E171 and a non-nanomaterial TiO2. Growth of both organisms individually and t...

Journal: :iranian journal of catalysis 2014
mohammad khodadadi-moghaddam

photocatalytic reduction of carbon dioxide to formaldehyde was investigated on four semiconductor photocatalysts (fes, fes/fes2, nio and tio2). the reaction was carried out in continues flow of co2 gas bubbled into the reactor. semiconductor photocatalysts were characterized by x-ray diffraction (xrd) and diffuse reflectance spectroscopic (drs) methods. sulfide ion was used as hole scavenger. t...

2007
Giovanni Palmisano Sedat Yurdakal Vincenzo Augugliaro Vittorio Loddo Leonardo Palmisano

The photocatalytic oxidation of 4-methoxybenzyl alcohol to p-anisaldehyde (PAA) was performed in water with organic-free suspensions of home-prepared and commercial titanium dioxide (TiO2) catalysts. The nanostructured TiO2 samples were synthesised by boiling aqueous solutions of titanium tetrachloride (TiCl4), under mild conditions, for different times. The crystallinity increased with the boi...

2016
Weigang Lu Abayomi D. Olaitan Matthew R. Brantley Behrooz Zekavat Deniz A. Erdogan Emrah Ozensoy Touradj Solouki

Details of coupling a catalytic reaction chamber to a liquid nitrogen-cooled cryofocuser/triple quadrupole mass spectrometer for online monitoring of nitric oxide (NO) photocatalytic reaction products are presented. Cryogenic trapping of catalytic reaction products, via cryofocusing prior to mass spectrometry analysis, allows unambiguous characterization of nitrous oxide (N2O) and nitrogen oxid...

2014
Donya Ramimoghadam Samira Bagheri Sharifah Bee Abd Hamid

Anatase titanium dioxide nanoparticles (TiO2-NPs) were synthesized by sol-gel method using rice straw as a soft biotemplate. Rice straw, as a lignocellulosic waste material, is a biomass feedstock which is globally produced in high rate and could be utilized in an innovative approach to manufacture a value-added product. Rice straw as a reliable biotemplate has been used in the sol-gel method t...

2014
Khuram Ali Sohail A Khan Mohd Zubir Mat Jafri

Indium tin oxide (ITO) and titanium dioxide (TiO2) anti-reflective coatings (ARCs) were deposited on a (100) P-type monocrystalline Si substrate by a radio-frequency (RF) magnetron sputtering. Polycrystalline ITO and anatase TiO2 films were obtained at room temperature (RT). The thickness of ITO (60 to 64 nm) and TiO2 (55 to 60 nm) films was optimized, considering the optical response in the 40...

Journal: :Nanoscale 2014
Mei Leng Yu Chen Junmin Xue

Titanium dioxide (TiO2) is an important material for photovoltaics, photocatalysis, sensors and lithium ion batteries. Various morphologies of TiO2 nanomaterials have been synthesized, including zero-dimensional (0D) nanoparticles, one-dimensional (1D) nanowires and nanotubes, as well as three-dimensional (3D) nanostructures. But the two-dimensional (2D) TiO2 nanostructures, which are expected ...

2010
G. Kaune

Thin films of titanium dioxide (TiO2) have attracted considerable attention in the past few years, since nanocrystalline TiO2 shows outstanding properties and has widespread application potential. The possible applications range from solar cells and energy conversion systems, gas and UVsensors, battery systems to photocatalysis and self-cleaning surfaces. All these applications rely on the semi...

Introduction: The increasing trend of cancer morbidity and mortality is a major human health concern, indicating the necessity for the design and introduction of novel anticancer compounds. The use of nanotechnology products is a new approach to cancer treatment. Therefore, the current study was performed to synthesize Titanium Dioxide nanoparticles (NPs) functionalized with glutamine and conju...

2015
Dan Elgrabli Remy Beaudouin Nawel Jbilou Magali Floriani Alexandre Pery Françoise Rogerieux Ghislaine Lacroix

Titanium dioxide (TiO2) nanoparticles are used in many applications. Due to their small size, easy body penetration and toxicological adverse effects have been suspected. Numerous studies have tried to characterize TiO2 translocation after oral, dermal or respiratory exposure. In this study, we focused on TiO2 nanoparticle biodistribution, clearance and toxicological effects after intravenous i...

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