Multilaboratory study of the shifts in the IEP of anatase at high ionic strengths.
The zeta-potentials of anatase at pH 2-11 in 0.1, 0.3, 0.5, and 1 moldm(-3) NaI were studied using the DT 1200 in three laboratories. At [NaI]=1 moldm(-3) the zeta-potentials were positive over the entire pH range. The previously observed tendency of the isoelectric point of anatase to shift to high pH at high ionic strength (M. Kosmulski, J.B. Rosenholm, J. Phys. Chem. 100 (1996) 11681) and the salt specificity of this effect were confirmed. The zeta-potentials obtained in different laboratories using DT 1200 are consistent within 3 mV.
Kosmulski
Marek
M
Department of Electrochemistry, Technical University of Lublin, Nadbystrzycka 38A, 20618 Lublin, Poland. kosmulsk@hermes.umcs.lublin.pl
Dukhin
Andrei S
AS
Priester
Torsten
T
Rosenholm
Jarl B
JB
D004563:Electrochemistry; D006863:Hydrogen-Ion Concentration; D007477:Ions; D007700:Kinetics; D012492:Salts / Q000494:pharmacology; D013696:Temperature; D014025:Titanium / Q000737:chemistry*
D007477:Ions; D012492:Salts; C009495:titanium dioxide; D014025:Titanium