Collect. Czech. Chem. Commun. 1982, 47, 1794-1801

Acid base phenomena at the n-TiO2/room temperature molten salt interphase

R. J. Galea, A. J. Nozikb, J. Cooperb and R. A. Osteryoungc

a Department of Chemistry, Louisiana State University, Baton Rouge, LA 708 03, USA
b Solar Energy Research institute, Golden, Colorado 804 01, USA
c Department of Chemistry, State University of New York at Buffalo, Buffalo, New York 142 60, USA


Interphasial properties of the n-TiO2/room temperature AlCl3 : 1-butylpyridinium chloride melt system have been studied by cyclic voltammetry and ac impedance methods. Surface faradaic reactions, dependent on the Lewis acidity of the melt and the semiconductor dopant concentration, are thought to be due to ionizable surface complexes. Theoretical models for flat-band shifts with bulk electrolyte acidity may be complex if the surface coverage is variable or if multiple ligand ionization can occur.