Abstract
We have synthesized one-dimensional structures of tellurium dioxide (TeO 2) by heating of tellurium powders. Their morphology was drastically changed as the growth temperature increased in the range of 400–500 °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 TeO 2 products were crystalline with tetragonal structure. The TeO 2 nanowire film exhibited a high transmission rate of about 73%. We have investigated the NO 2 sensing properties of the as-fabricated TeO 2 nanowires, in which a linear relationship between sensitivity and the NO 2 gas concentration was observed. Thus, the TeO 2 nanowires demonstrated their potential application to transparent chemical sensors.
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