Journal
NANOTECHNOLOGY
Volume 20, Issue 2, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/20/2/025606
Keywords
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Funding
- NSFC [20673007, 20633010, 50521201]
- MOST [2007CB936201]
- SRFDP [20070001018]
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PbSe nanotubes were successfully synthesized by a reactive template approach via solvothermal transformation of trigonal selenium (t-Se) nanotubes in ethylene glycol. It was revealed that a relatively high reaction temperature (e. g., 200 degrees C), adequate ascorbic acid, and proper lead source were crucial for preparing PbSe nanotubes through shape-preserved transformation of t-Se nanotubes. Moreover, novel Se@ PbSe composite nanotubes consisting of Se nanotubes covered with a PbSe sheath were obtained by shortening the reaction time and subsequent removal of the inner Se nanotubes resulted in the formation of thin-walled PbSe nanotubes (less than 20 nm in wall thickness). On the basis of the experimental observations, a plausible mechanism for the formation of PbSe nanotubes as well as Se@ PbSe composite nanotubes was proposed. Furthermore, preliminary electrochemical measurements showed that the prepared PbSe nanotubes exhibited a good electrochemical activity.
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