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| Performance of Ti--base SnO$_{2}$ electrode with an inter layer containing Mn element |
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| 哈尔滨工业大学环境科学与工程系 |
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Cite this article:
;. Performance of Ti--base SnO$_{2}$ electrode with an inter layer containing Mn element. Chin J Mater Res, 2005, 19(1): 47-53.
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Abstract Taking titanium as the base metal, a kind of tin dioxide catalytic electrode with an
inter--layer containing Mn(Ti/Mn/SnO$_{2}$) was prepared by pyrolysis.
The electro--catalytic oxidation characteristics of prepared electrode were
investigated by selecting phenol as model substrate. The micrographs,
the element composition of different layers, and the chemical environment of
elements on the electrode surface were analyzed by SEM, EDX and XPS.
Although the electro--catalytic activity of the electrode was decreased,
the working voltages of Ti/Mn/SnO$_{2}$ electrode were highly stabilized
compared with that of Ti/SnO$_{2}$ electrode without Mn inter--layer.
It implies that the inter--layer might hold up the oxygen atom transfer process
from electrode surface to Ti base metal, and this could then
extend service life of the electrode. The redox couples of
Mn$^{2+}$/Mn$^{4+}$ and Sn$^{2+}$/Sn$^{4+}$ influence the composition and
the crystal structure on SnO$_{2}$ electrode surface, and hence change the
electrode performance.
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Received: 29 April 2004
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