in situ dynamic quartz crystal impedance analysis;
electrochemistry;
ferricyanide;
ferrocyanide;
D O I:
暂无
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
Admittance spectra of quartz crystal resonance were measured in situ in the electrochemical process of Fe(CN)(6)(3-)/Fe(CN)(6)(4-) on Au electrode in 1.0 mol/L Na2SO4 aqueous solution using an electrochemical quartz crystal impedance system, Changes in motional resistance R-1 were well reversible with potential, but resonant frequency f(o) series resonant frequency f(s) and parallel resonant frequency f(p) had significant rising drifts besides somewhat reversible changes with potential. It is concluded that changes in R-1 were caused by variations in solution density and viscosity near electrode surface, but frequency responses resulted from both changes of solution properties and corrosion of Au electrode in anodic process.