Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 34, Issue -, Pages 9-13Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2013.04.020
Keywords
Anodization; ZnO; Hierarchical; Nanotubes
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Funding
- DFG
- Alexander von Humboldt Foundation
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We report on the formation of self-organized nanotubular oxide structures by anodization of zinc in a sulfide based electrolyte. Under optimized experimental conditions, successful growth of a several micrometer long self-organized tubular structure is achieved. The anodized samples were characterized using FE-SEM, XPS, XRD and SAED. The key to formation of tubular ZnO is a protective sulfide containing initial layer. In contrast to other self-ordered tubular geometries, ZnO anodic layers consist of a particular tube wall structure. The resulting double hierarchy layers show a considerable efficiency for photoelectrochemical splitting of water when used in a sacrificial polysulfide electrolyte. (C) 2013 Elsevier B.V. All rights reserved.
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