Voltammograms crystal surfaces

Figure 2. Voltammograms for the underpotential deposition of lead on silver single crystal surfaces.

The voltammograms shown here (Fig. 15 - 17) agree well with published data. It is proved that the obtained surfaces were well-defined as the intended single crystal surfaces and the system was clean enough to perform the single crystal experiments. 

Me UPD on S is reflected in well-pronounced cathodic and anodic peaks at different AE in cyclic voltammograms. Using defined single crystal surfaces as substrates, the peak structure is found to depend strongly on the crystallographic... 

Fig. 35 Cyclic voltammogram of platinum single-crystal surfaces in the hydrogen adsorption region in 0.5 M H2SO4 under nitrogen purging ...

Amount of deposition of metal atoms was controlled by monitoring the in-situ voltammogram. After then the single crystal surface was washed with ultra-pure water replaced in the quartz cell, and then it was transferred into the main chamber for the LEED and XPS or AES analysis. The Rh/Pt(100) and PtZRh(lOO) surfaces... 

An application of an electrochemical quartz crystal microbalance (EQCM) in the study of the A11/HCIO4 system shows that even at a potential about 0.5 V more negative than the onset of AuO formation (the so-called preoxide region), the resonant frequency of the Au-covered quartz crystal decreases as that of the surface mass increases. A comparison of a voltammogram with the potential dependence of the micro-balance frequency for an Au electrode is shown in Figs. 6a and 6b. 

Underpotential deposition of Zn on R was seen as adsorption of Zvi ions in 1970, since is as high as 1V, a value that well exceeds the one expected from previous results on various metal combinations of underpotential deposition systems. Recently, Zn underpotential deposition on R was reported in acidic solutions, and then in alkaline solutions. Zn underpotential deposition on Pd was also found in acidic and alkaline solutions. Then cyclic voltammograms of underpotential deposition on three low-index, single-crystal Rs were observed in sulfuric and perchloric acid solutions, as shown in Figs. 27 and 28. " In comparing Figs. 27 and 28, Zn underpotential deposition on R seans to take place only on Pt(llO), but not on Pt(lll) and Pt(lOO). Therefore it can be said that a cyclic voltammogram on polycrystalline R was observed on a R(110)-like surface. 

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