Metal deposition electrochemical crystal microbalance

In 2003, Tsionsky, Daikhin, Urbakh, and Gileadi [21] published a very thorough treatment of the metal/solution interface as examined by the electrochemical quartz crystal microbalance, with emphasis on the misinterpretations of data that can occur if the basic physics and chemistry at the interface are not understood. Topics covered include the electrical double-layer/electrostatic adsorption, the adsorption of organic and inorganic species, metal deposition, and the influence of roughness on the response of the QCM in liquids. 

Polymerization of pyrrole has also been carried out chemically by mixing the monomer with a homogeneous oxidant (Fe ) in solution. Mermillod et al [61] found that poly(pyrrole) synthesized in water by action of Fe ( 104)3 produces particles in solution as well as films on the reactor walls. The material was electrochemically identical with electropolymerized product. Gregory et al [62] chemically deposited very uniform films of poly(pyrrole) on textile fibres and woven glass cloth. Gottesfeld et al [63] found that chemically deposited films were uniform and could serve as a conducting substrate for metallization structures for microelectronic circuitry. Hillman et al [64] studied the electrodeposition of poly(vinylfer-rocene) with the quartz crystal microbalance. 

Au CLj] to [AutlJ and further reduction of [Autaj to Au metal, respectively and the anodic waves at ca. 0.5 and 1.2 V are ascribable to the oxidations of the deposited Au metal to [Au cy and [Auty to [Au Cy, respectively. The anodic peak current at 0.5 V was found to increase, resulting from the disproportionation reaction of [Au Cl2] to [Au ty and Au, when the electrode potential was held at 0 V for 200 s and then was scanned in the positive direction of potential [5]. They also used an in situ electrochemical quartz crystal microbalance (EQCM) technique based on a R film-coated quartz crystal electrode. A series of two-electron 2e) and one-electron (le) reductions of the [Au Cy to [Autaj and [Autaa] to Au metal were recognized at the ft surface [46]. Besides, the disproportionation... 

In electrochemistry, the piezoelectric BAW sensor is known as an electrochemical quartz crystal microbalance (EQCM). This device plays an important role in electrochemical research. Metal deposition, corrosion and formation of passive layers have been studied successfully. 

S. Wehner, K. Wondraczek, D. Johannsmann, and A. Bund, Roughness-induced acoustic second-harmonic generation during electrochemical metal deposition on the quartz-crystal microbalance, Langmuir, 20, 2356-2360 (2004). 

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