One-dimensional CuO-SnO2 p-n heterojunctions for enhanced detection of H2Sстатья
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Дата последнего поиска статьи во внешних источниках: 10 февраля 2016 г.
Аннотация:Highly crystalline SnO2 nanowires were synthesized and functionalized with copper particles in a CVD using Sn(OBut)4 and [CuII((C5H4N)(CHCOCF3))2]2 (1) as precursors, respectively. Controlled oxidation of Cu to CuO led to the formation of CuO@SnO2 p-n heterojunctions, which were found to be highly sensitive and selective towards the detection of H2S gas. The change in the conductance upon exposure to H2S gas was attributed to the formation of CuS causing shrinkage of space charge region along the SnO2 nanowire and concomitant increase of conductivity channel in individual nanowire.