Journal
APPLIED SURFACE SCIENCE
Volume 258, Issue 1, Pages 501-506Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2011.08.081
Keywords
Nanostructures; Chemical synthesis; Transmission electron microscopy
Categories
Funding
- Hanyang University [HY-2011-201100000000434]
- Ministry of Public Safety & Security (MPSS), Republic of Korea [C1090-1100-0007] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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We have synthesized one-dimensional structures of tellurium dioxide (TeO2) by heating of tellurium powders. Their morphology was drastically changed as the growth temperature increased in the range of 400-500 degrees C, in which high-temperature process facilitated the thickening of the stem nanowires, as well as the growth of secondary branches on the stems. The obtained TeO2 products were crystalline with tetragonal structure. The TeO2 nanowire film exhibited a high transmission rate of about 73%. We have investigated the NO2 sensing properties of the as-fabricated TeO2 nanowires, in which a linear relationship between sensitivity and the NO2 gas concentration was observed. Thus, the TeO2 nanowires demonstrated their potential application to transparent chemical sensors. (C) 2011 Elsevier B. V. All rights reserved.
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