| Title |
Piezoelectric resonator study of the viscosity of interfacial layers at gold electrode surface in perchloric acid, tetrafluoroborate and sulphate solutions / |
| Authors |
Plaušinaitis, Deivis ; Ambrulevičius, Filipas ; Daujotis, Vytautas |
| Full Text |
|
| Is Part of |
International journal of electrochemical science.. Belgrade : Electrochemical Science Group. 2015, vol. 10, no 9, p. 7251-7260.. ISSN 1452-3981 |
| Keywords [eng] |
Interfacial solution ; Viscosity ; Quartz resonator ; Gold electrode |
| Abstract [eng] |
Piezoelectric resonator measurements in perchloric acid, sodium tetrafluoroborate and sodium sulphate solutions and comparison with earlier reported measurements in hexafluorophosphate, perchlorate and chloride solutions show that a decrease of interfacial viscosity of anion solutions, when gold electrode is polarized towards potential of zero charge, is mostly governed by surface charge. At the potential of zero charge a decrease of interfacial viscosity of all solutions investigated was in the range from 0.5% to 0.8% of the bulk viscosity. Considering that interfacial viscosity is determined by averaging over the decay length scale of the damped shear wave radiated into the liquid by the resonator, model calculations show that the measured changes of average viscosity are caused by changes of the actual interfacial viscosity and the thickness of the layer, where the change of interfacial viscosity occurs. |
| Published |
Belgrade : Electrochemical Science Group |
| Type |
Journal article |
| Language |
English |
| Publication date |
2015 |
