Colloidal palladium protected with poly(N-vinyl-2-pyrrolidone) for selective hydrogenation of cyclopentadiene

Application of Atomic Absorption for Determination of Metal Nanoparticles in Organic-Inorganic Nanocomposites

“…This means that the double bond CO stretches become weak by coordinating to Pd nanoparticles. Thus, it is confirmed that PVP molecules exist on the surface of the Pd nanoparticles, and coordinate to the Pd nanoparticles (Metin et al, 2008;Hirai et al,1985). type hysteresis loops indicative of mesoporous materials with one-dimensional cylindrical channels and narrow pore size distributions.…”

Removal of methyl orange by activated carbon modified by silver nanoparticles

“…The stabilizers such as surfactants and ionic polymers cannot be easily removed from the surfaces of the formed silver colloids, which unavoidably affect the physiochemical properties of the resulting nanoparticles. The most widely used substances for the stabilization of metal nanoparticles are ligands and polymers, specially natural or synthetic polymers with a certain affinity towards metals, which are soluble in suitable solvents (Hirai et al 1985). The AC is an efficient adsorbent for removal of many chemical species (Mohammadi et al 2011;Belhachemi and Addoun 2011;Chen et al 2010;Mall et al 2005;Meshko et al 2001), however, its reusability is poor due to the loss during desorption.…”

Electrospinning of Metal Doped Alumina Nanofibers for Catalyst Applications

“…PVP also plays an important role in protecting and stabilizing the colloidal dispersions of noble www.intechopen.com metals. Since soluble polymers can cover the whole surface of the catalyst, the effect of the supporting polymer may be promoted in the case of the polymer-protected colloidal metals compared with that by inorganic supports (Hirai et al, 1985). The precursor for alumina is basic aluminum acetate.…”