Reduction of palladium (II) in aqueous solution: stabilization and reactions of an intermediate cluster and palladium colloid formation

Autor:	Matthias Michaelis, Arnim Henglein
Rok vydání:	1992
Předmět:	Aqueous solution Radical Inorganic chemistry General Engineering chemistry.chemical_element Solvated electron Metal Colloid Transition metal chemistry visual_art Radiolysis visual_art.visual_art_medium Physical and Theoretical Chemistry Palladium
Zdroj:	The Journal of Physical Chemistry. 96:4719-4724
ISSN:	1541-5740 0022-3654
DOI:	10.1021/j100190a105
Popis:	In the γ-radiolytic reduction of Pd(NH 3 ) 4 Cl 2 in the presence of poly(ethyleneimine), an intermediate cluster is stabilized by the polymer. Pulse radiolysis experiments show that it is slowly formed in the 0.01-1-s range after the primary reduction of Pd(II) to Pd(I) by hydrated electrons and organic radicals has occurred in the 0.1-100-μs range. A photochemical method for the preparation of the cluster is also described. The cluster absorbs at 308 and 400 nm and decays within a few days to yield colloidal palladium metal
Databáze:	OpenAIRE
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