Orbital Interactions and Chemical Reactivity of Metal Particles and Metal Surfaces

1991 ◽  
pp. 323-389 ◽  
Author(s):  
R. A. van Santen ◽  
E. J. Baerends
Keyword(s):  
Metal Surfaces ◽  
Chemical Reactivity ◽  
Metal Particles ◽  
Orbital Interactions

Substrate Vibrations as Promoters of Chemical Reactivity on Metal Surfaces

2015 ◽  
Vol 119 (50) ◽  
pp. 12434-12441 ◽  
Author(s):  
Victoria L. Campbell ◽  
Nan Chen ◽  
Han Guo ◽  
Bret Jackson ◽  
Arthur L. Utz
Keyword(s):  
Metal Surfaces ◽  
Chemical Reactivity ◽  
Substrate Vibrations

Chemical Reactivity of Metal Particles Produced by Laser Ablation into Liquids

1990 ◽  
Vol 191 ◽  
Author(s):  
W. L. Parker ◽  
Philip Boudjouk
Keyword(s):  
Laser Ablation ◽  
Oxidation State ◽  
Chemical Reactivity ◽  
Chemical Reduction ◽  
Metal Particles ◽  
Spectroscopic Evidence ◽  
Reactive Fluid

ABSTRACTSpectroscopic evidence of the chemical differences between metal particles produced by laser ablation of metals into reactive fluid solvents and metal particles produced by less energetic means is presented. Specifically. 1) ablation of copper into fluid methanol produces metal particles in which some fraction of the metal is present In the cuprous oxidation state and 2) ablation of nickel into tetrahydrofuran results In metal particles less reactive to the solvent than those produced by ultrasound promoted chemical reduction.

Chemistry and Optical Properties of Small Metal Particles in Aqueous Solution

1992 ◽  
Vol 272 ◽  
Author(s):  
Arnim Henglein
Keyword(s):  
Aqueous Solution ◽  
Optical Properties ◽  
Pulse Radiolysis ◽  
Chemical Reactivity ◽  
Metal Particles ◽  
Metallic State ◽  
Deposited Metal ◽  
Fast Kinetic ◽  
Surface Modified ◽  
Small Metal Particles

ABSTRACTMetal particles in aqueous solution can be surface-modified by chemisorbed molecules and/or by a second deposited metal. The electron density in the metal particles is varied by controlled electron transfer from free radicals.’ These modifications lead to significant electronic changes in the metal particles, the result being changes in the optical properties and in chemical reactivity.The physicochemical properties also change during the transition from the atomic to the metallic state with increasing particle size. In the case of silver, oligomeric non-metallic clusters can be stabilized in solution for days, time enough to study many of their properties. In other cases (Au, Cu, Pb), the clusters are short-lived; they are investigated by fast kinetic methods such as pulse radiolysis.

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