نتایج جستجو برای: doped tio2 nanoparticles
تعداد نتایج: 168986 فیلتر نتایج به سال:
Sunlight responsible mono- and co-doped TiO2 nanoparticles (Con+ Fen+) were prepared via sol–gel technique. The X-ray diffraction (XRD) results showed no phase change of was observed after the addition Con+ Fen+ ions. Diffuse reflectance spectra (DRS) a significant red-shift absorption edge doping by Con band gap energy reduced sharply from 3.10 to 1.72 eV. photoelectron spectroscopy (XPS) emph...
Absorption spectra of anatase and rutile TiO2 in the 150-300 nm region before and after the deposition of Pt nanoparticles were measured. For anatase TiO2, the spectral intensity in the longer wavelength region decreased (>∼210 nm), while that in the shorter wavelength region increased (<∼210 nm). In particular, spectral band intensity in the far-ultraviolet (FUV) region (∼160 nm) was increased...
In order to investigate the pulmonary toxicity of titanium dioxide (TiO2) nanoparticles, we performed an intratracheal instillation study with rats of well-dispersed TiO2 nanoparticles and examined the pulmonary inflammation and histopathological changes in the lung. Wistar Hannover rats were intratracheally administered 0.2 mg (0.66 mg/kg) and 1.0 mg (3.3 mg/kg) of well-dispersed TiO2 nanopart...
This paper presents an approach to the suppression of the emission of dioxin and its precursors as a result of the co-incineration of poly (vinyl chloride) (PVC) with TiO2-encapsulating polystyrene (TEPS), in which TiO2 nanoparticles with the capacity to adsorb dioxin and its precursors are encapsulated without significant agglomeration. Field-emission scanning electron microscopy (FE-SEM) and ...
OBJECTIVE Western lifestyle and diet are major environmental factors playing a role in the development of IBD. Titanium dioxide (TiO2) nanoparticles are widely used as food additives or in pharmaceutical formulations and are consumed by millions of people on a daily basis. We investigated the effects of TiO2 in the development of colitis and the role of the nucleotide-binding oligomerisation do...
A series of N-doped anatase TiO2 samples have been prepared using a solvothermal method in an organic amine/ethanol–water reaction system. The effects of different starting N : Ti atomic ratios on the catalysts structure, surface property and catalytic activity have been investigated. The photocatalytic activity and stability of the N-doped TiO2 samples were evaluated through using the decompos...
The doping of TiO2-based nanomaterials for semiconductor-sensitised photoreactions has been a practice extensively studied and applied many years. main goal remains the improvement light harvesting capabilities under passive solar irradiation, that in case undoped TiO2 is limited restricted to relatively low latitudes. activity selectivity doped photocatalysts are generally discussed on basis m...
Introduction As one of the most common nanomaterials, TiO2 nanoparticles have found their industrial and household applications in cosmetics, sunscreens, pharmacy, socks, paints and coatings, catalyst, even food and many other fields, which are expected to continue to grow in the next decade [1]. However, the release of TiO2 nanoparticles into the aquatic environment is inevitable during the pr...
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