Dispersion silver

Manna A et al 1997 Synthesis and oharaoterization of hydrophobio, approtioally-dispersible silver nanopartioles in Winsor Type II mioroemulsions Chem. Mater. 9 3032... 

Ji, M., Chen, X., Wai, C.M. and Fulton, J.L. (1999) Synthesizing and dispersing silver nanoparticles in a water-in-supercritical carbon dioxide microemulsion. Journal of the American Chemical Society, 121 (11), 2631-2632. 

Lin, X.Z. Teng, X., and Yang, H. 2003. Direct synthesis of narrowly dispersed silver nanoparticles using a single-source precursor. Langmuir, 19 10081-5. 

Supported silver catalysts are relatively commonly used in gas phase oxidations of alcohols.74,75 Benzyl alcohol can be selectively oxidised to benzaldehyde using a 0.6% Ag/pumice catalyst76 with 100% selectivity, although its activity is less than a similar Pd material. However, a mixed Pd-Ag/pumice bimetallic increases the activity whilst retaining the 100% selectivity to benzaldehyde. The authors of this study concluded that the role of the Pd was to activate the substrate whereas the highly dispersed silver particles served to activate the oxygen. Hence, the mechanism was one of cooperation between the Ag° and Pd° sites, the alloy phase, detected by EXAFS, was considered not to play an important role. 

In Section II1.2 we discussed ethylene adsorption to a dispersed silver supported on alumina. This section is separated from the earlier discussion for the principal reason that the spectroscopic methods utilized in the silver investigations are generally not applicable to transition metals with partially filled d-orbitals. The most relevant metals (primarily platinum, rhodium, ruthenium, and palladium)... 

In view of these results obtained with a rough silver electrode, the Raman scattering from biomolecules absorbed on dispersed silver particles of positively charged silver colloids has been reported From the results of the strong SERS signals of... 

In melt electrospinning, silver nanoparticles are doped in molten polymer to prepare a silver/polymer composite. It is extremely difficult to disperse silver nanoparticles uniformly into the polymer matrix. This problem arises mainly due to the ease with which nanoparticles agglomerate and also, the high viscosity of the molten polymer. In the past few years, compounding of PP with nanosilver using a compounding extruder has gained popularity. 

Popov KI, Zivkovic PM, Nikolic ND (2012) Formation of disperse silver deposits by the electrodeposition processes at high overpotentials. Int J Electrochem Sci 7 686-696... 

Carbons containing dispersed silver [205, 372-374] also show good cycling behavior. Independently of the alloying of lithium with the metal, lithium intercalation into the carbon takes place. Apart from carbons and metal phases, novel oxides such as Li MV04(M = Co, Cd, Ni, Zn l[Pg.408]

Singh S, Patel P, Jaiswal S, Prabhune AA, Ramana CV, Prasad BLV. A direct method for the preparation of glycohpid metal nanoparticle conjugates sophorohpids as reducing and capping agents for the synthesis of water re-dispersible silver nanoparticles and their antibacterial activity. New J Chem 2009 33 646-52. 

This phenomenon is shown in Eigure 1 for aluminum flakes. Figure 1 shows the effect of shear processing in the percolation threshold. These studies also showed that for randomly dispersed silver spheres in a Bakelite composition, the percolation threshold (where the composite became electrically conductive) approached 40%. This amount of metal in the composite makes it hard to mold, and reduces its mechanical integrity for most applications. 

Ag(nP) Antibacterial properties of water-dispersible silver nanoparticles [115]... 

Kawai, K., T. Narushima, K. Kaneko, H. Kawakami, M. Matsumoto, A. Hyono, H. Nishihara, and T. Yonezawa. Synthesis and antibacterial properties of water-dispersible silver nanoparticles stabilized by metal-carbon o-bonds. Appl. Surf. Sci. 262, 2012 76-80. 

Dispersant—silver halide emulsions, Ethylene France 1,586,036 1970 Eastman Kodak... 

---