M H2SO4 at

In conforming to an expected linear free energy relationship, the Ce(lV) oxidation of various 1,10-phenanthroline and bipyridyl complexes of Ru(II) in 0.5 M sulphuric acid are consistent with the requirements of the Marcus treatment . The results for the oxidation of the 3- and 5-sulphonic-substituted ferroin complexes by Ce(IV) suggest that the ligand does not function as an electron mediator, and that the mechanism is outer-sphere in type. Second-order rate coefficients for the oxidation of Ru(phen)j, Ru(bipy)3, and Ru(terpy)3 are 5.8x10, 8,8 X 10, and 7.0 x 10 l.mole . sec, respectively, in 0.5 M H2SO4 at 25 °C a rapid-mixing device was employed. 

Figure 6.5 CO ds voltammetric stripping peak (symbols) and the fits obtained from (6.11) (lines) for the Pt(lll) electrode in 0.5 M H2SO4 at different temperatures. The scan rate was 50mV/s.

Figure 10.5 CO-stripping voltammograms (sweep rate 0.10 V s ) at pure Pt and stabilized Pt5gCo42 in 0.1 M HCIO4, and PtgoRu4o in 0.05 M H2SO4 at room temperature. The CO pre-adsorption was performed in CO-saturated solution at 0.075 V for 5 minutes. (From Wakisaka et al. [2006], reproduced by permission of the American Chemical Society.)...

Figure 12.19 Potential-dependent SFG spectra from atop CO on a Pt(lll)/Ru electrode in 0.1 M H2SO4 at 1 mV/s in 0.1 M H2SO4 (see Fig. 12.18). The scan potential for each spectrum is shown on the right. Spectra from Ru-Pt(lll)-CO and Pt(lll)/Ru-CO are shown, including the CO phase transition at > 0.17 V (vs. Ag/AgCl). The inset shows a blow-up of the SFG spectrum from Pt(lll)/Ru-CO at 0.17 V.

Figure 15.5 Cyclic voltammograms obtained inO.l M H2SO4 at a sweep rate of 0.1 V s for Pt/GC electrodes with mean particle sizes < n= 1.8 nm (1), 2.4 nm (2), and 2.8 nm (3), and Pt electrodeposited on GC (4). See the text for details. (Curves have been replotted from Maillard et al. [2004a, 2005]—Reproduced by permission of The Royal Society of Chemistry and the PCCP Owner Societies.)...

Figure 15.11 Specific activities for the MOR on Pt/Vulcan XC-72 (1) [Guerin et al., 2004] and Pt/GC (2) [Takasu et al., 2000] in aqueous electrolytes as functions of particle size. For curve 1, currents were measured after 1 minute at 0.6 V vs. RHE in 1 M CH3OH + 0.5 M H2SO4 at room temperature for curve 2, they were measured after 10 minutes at 0.6 V vs. RHE in 0.1 M CH3OH + 0.02 M HCIO4 at 298K. (Curves have been leplotted from Guerin et al. [2004], Copyright 2004 American Chemical Society and from Takasu et al. [2000], Copyright 2000, with permission from Elsevier.)...

Figure 8.6 Current-potential curves for 0.05 M Fe2+/Fe3+ in 0.5 M H2SO4 at SnC>2 electrodes with two different donor concentrations (a) 5 x 1019 cm 3, (b) 5 x 1017 cm-3 (data taken from Ref. 5).

Fig. 2-21 Cyclic voltammogram of Pt(lll) in 5 M H2SO4 at 50mV/s. (---) Jirst sweep (---) after experiencing oxidation of platinum... 

Fig.2- Cyclic voltammogram far oxidation of COad adsorbed at 50 mV on a chemically platinized Pt electrode in 3 M H2SO4 at 10 mV/s. 

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