An experimental verification of the possible influence of gas nano-bubbles on the response of an electrochemical quartz crystal microbalance.
Electrochemical removal of oxygen and hydrogen from aqueous solution in the vicinity of gold electrodes, with simultaneous measurements of the response of the quartz crystal microbalance, show no evidence of gas nano-bubbles attached to the surface, irrespective of its roughness and hydrophobicity. The contact between gold and frozen electrolyte, which forms a liquid-like layer between them, also does not contain gas bubbles. These statements could be extended to nano-bubbles with characteristic dimensions larger than a few nanometers.
School of Chemistry, Raymond and Beverly Sackler, Faculty of Exact Sciences, Tel-Aviv University, 69978 Ramat-Aviv, Israel. tsionsky@post.tau.ac.il
Vladimir
V
Tsionsky
Alexander
A
Kaverin
Leonid
L
Daikhin
Galina
G
Katz
Eliezer
E
Gileadi
D004563:Electrochemistry; D004566:Electrodes; D004573:Electrolytes / Q000737:chemistry; D005740:Gases / Q000737:chemistry*; D006046:Gold / Q000737:chemistry; D011791:Quartz; D013499:Surface Properties
D004573:Electrolytes; D005740:Gases; D011791:Quartz; D006046:Gold