Nanoparticle titania zirconia

This new single-step synthesis unites the simplicity of preparation and lower production costs, with the outstanding properties of the final catalysts. By the single-step procedure proposed here, deposition of dispersed nanoparticles of noble metals on ceramic supports with customised textural properties and shape was achieved. Noble metals including platinum, palladium, rhodium, ruthenium, iridium, etc. and metal oxides including copper, iron, nickel, chromimn, cerium oxides, etc on sepiolite or its mixtures with alumina, titania, zirconia or other refractory oxides have been also studied. 

The term polymer nanocomposite (PNC) has evolved, since the first reports in the early 1990s to refer to a multicomponent system, where the major constituent is a polymer or blend thereof and the minor constituent exhibits a length scale below 100nm [1-3], The minor constituent is usually an inorganic filler, called nanofiller, nanoload, or, improperly, nanoparticle. The most commonly used are layered silicates (clays), carbon nanotubes (CNTs), and metals and various metal oxides (silica, titania, zirconia, zinc oxide, etc.). 

The preparation of the required microporous ceramic layers is possible by the sol-gel route from stable colloidal dispersions with individual nanoparticles of less than 10 nm. Different types of ceramic nanofilters have been prepared from such aqueous or organic sols of the following oxides y-alumina, zirconia, ° hafnia," and titania. ... 

Other supports have found applications in nticrowave-promoted digestion. Zirconia-coated magnetic nanoparticles have been used for digestion and enrichment of phosphoproteins," and titania-coated magnetic iron oxide nanoparticles used in the characterization of pathogenic bacteria. ... 

FIGURE 1.296 SEM image of mesoporous silica film (a) with Ag nanoparticles or (b) alone (inset shows normal cross-section of the film). (With kind permission from Springer Science-HBusiness Media /. Sol-Gel Sci. TechnoL, Ag nanoparticles deposited onto silica, titania and zirconia mesoporous hlms synthesized by sol-gel template method, 50, 2009, 216-228, Krylova, G.V., Gnatyuk, Yu.L, Smirnova, N.P., Eremenko, A.M., and Gun ko, V.M., Copyright 2009.)... 

Krylova, G.V., Gnatyuk, Yu.L, Smirnova, N.R, Eremenko, A.M., and Gun ko, V.M. 2009. Ag nanoparticles deposited onto silica, titania and zirconia mesoporous films synthesized by sol-gel template method. 

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