Murali Krishna, K. ; Sharon, Maheshwar ; Mishra, M. K. (1995) Photoelectrochemical study of potentiodynamically anodized H2-reduced PbTiO3 + PbO mixed-oxide electrode in 0.1 M NaOH + 0.1 M Na2SO4 Journal of Electroanalytical Chemistry, 399 (1-2). pp. 53-60. ISSN 0022-0728
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/002207...
Related URL: http://dx.doi.org/10.1016/0022-0728(95)04170-2
Abstract
The mechanism of lead oxide formation and the enhanced photoresponse produced by potentiodynamic anodization of the H2-reduced surface of a PbTiO3 + PbO sintered pellet were investigated in the potential region from -1.25 to +2.35 V/SCE in 0.1 M Na2SO4 + 0.1 M NaOH at 80°C. The anodized electrode was characterized by X-ray diffraction, UV-visible reflectance spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscopy with energy dispersive X-ray analysis and various photoelectrochemical techniques. An 11-fold increase in solar to electrical power conversion efficiency and an enhanced quantum yield of 9% in 0.1 M Fe(CN)3-/4-6 redox electrolyte (pH 9.2) was observed with the H2-reduced PbTiO3 + PbO electrode anodized for 30 min compared with the unanodized H2-reduced PbTiO3 + PbO electrode.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Potentiodynamic Anodization; Solar Cells; Lead Oxides; Mixed-oxide Electrode; Surface Analysis; Photoelectrochemistry |
| ID Code: | 20230 |
| Deposited On: | 20 Nov 2010 14:49 |
| Last Modified: | 08 Jun 2011 04:38 |
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