Formation of Ternary Surface Complexes by Adsorption of 2,2'-Bipyridine onto Silica Modified with Copper Ions.
The adsorption of 2,2'-bipyridine on a copper-containing silica surface has been studied. The equilibrium of bipyridine binding to surface copper ions are well reproduced by the constants for the formation of ternary surface complexes from an aqueous solution containing copper ions and bipyridine. This indicates clearly that under experimental conditions all reactions are reversible and speciation is controlled by thermodynamics. Copyright 2001 Academic Press.
Institute of Inorganic Chemistry, University of Fribourg, Fribourg, CH-1700, Switzerland
C.-W.
CW
Schläpfer
N. N.
NN
Vlasova
A. A.
AA
Svezhentsova