| Autor: |
Hull, Caleb M., Koza, Jakub A., Switzer, Jay A. |
| Předmět: |
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| Zdroj: |
Journal of Materials Research; Nov2016, Vol. 31 Issue 21, p3324-3331, 8p |
| Abstrakt: |
An electrodeposition method for growing epitaxial Co(OH)2 films on single crystalline gold (111), (100), and (110) substrates is described. The films were grown by electrochemical reduction of [Co(en)3]3+ in an alkaline electrolyte. The Co(OH)2 grew with a [0001] out-of-plane orientation on all the gold crystal orientations. The in-plane orientation follows the symmetry of the gold (111), (100), and (110) substrates. The Co(OH)2 can be converted to CoOOH by electrochemical oxidation in 1 M KOH at 95 °C, and after conversion remains epitaxial with a [0001] out-of-plane orientation. The CoOOH film can be further converted to epitaxial Co3O4 with a [111] out-of-plane orientation by decomposition of the CoOOH film in air at 300 °C. This synthesis method allows for a simple fabrication of epitaxial catalysts and could be useful to probe the catalytic activity of specific crystal planes. [ABSTRACT FROM PUBLISHER] |
| Databáze: |
Complementary Index |
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