1994
DOI: 10.1016/0022-0728(93)03001-6
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An investigation of oxide films on platinum in sulphuric acid solution by electrochemical and photoelectrochemical techniques

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Cited by 10 publications
(5 citation statements)
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“…The reduction peak centered initially at 0.63 V SHE reflects the reduction of the ␣-oxide film, which is consistent with reported data. 2,4,6 The hydrogen adsorption-desorption peaks have been the subject of numerous previous investigations 15,23 and they are not discussed further here.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…The reduction peak centered initially at 0.63 V SHE reflects the reduction of the ␣-oxide film, which is consistent with reported data. 2,4,6 The hydrogen adsorption-desorption peaks have been the subject of numerous previous investigations 15,23 and they are not discussed further here.…”
Section: Resultsmentioning
confidence: 99%
“…Several photoelectrochemical studies of anodic oxide films on platinum have been reported. Rudge et al 23 reported that small anodic photocurrents were detected in the potential region where thin oxide films form. The same result was observed by Vinnikov et al 24 and was interpreted as indicating an n-type electronic character.…”
mentioning
confidence: 99%
“…However, the barrier height is not determined by the distribution functions, but by the Fermi level of the redox species in the solution and the conduction band edge at the film/solution interface. Assuming that the bandgap of the heavily doped platinum oxide film does not change with temperature (bandgaps of 2.4 eV [41] and 3.1 eV [40] have been reported from photo-electrochemical studies), then the change of the barrier height with temperature within the temperature range studied in this work is relatively 1 The Debye length, L Db , of an n-type semiconductor can be estimated as [12]:…”
Section: Theoretical Aspectsmentioning
confidence: 99%
“…V fb = 0.2 V. The photocurrent increased with increasing anodic potential (about 20 μA at 0.8 V). It must be noted that the surface oxide on Pt under an anodic bias also exhibits a photoresponse . The anodic photocurrent of the Pt/PtO x electrode without a CeO 2 layer (Figure S2 in the Supporting Information), however, was sufficiently small as compared to the Pt/CeO 2 electrode (<3 μA at 0.8 V).…”
Section: Resultsmentioning
confidence: 96%