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- W2187006812 abstract "In this research, we investigated the effect of structure and morphology of carbon nanotubes (CNTs) on nitrogen dioxide (NO 2 ) gas sensing. CNTs were synthesized by thermal chemical vapor deposition (TCVD) at different synthesis temperatures. The structure and morphology of CNTs were investigated by various characterization tools such as scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Raman spectroscopy. The resistance changes of CNTs were obtained upon NO 2 gas exposure with concentrations of 600, 1,800 and 3,000 ppm at room temperature. Our results show that the CNTs prepared at 950°C showed the highest response. We suggest that the response of CNTs to NO 2 gas depends more strongly on the interstitial area and electronic structure than on the defects of CNTs. These results are in good agreement with the theoretical calculations on adsorption sites (surface, pore, groove and interstitial) and electronic structure (metallic or semiconducting) reported by previous studies." @default.
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- W2187006812 date "2012-12-01" @default.
- W2187006812 modified "2023-09-24" @default.
- W2187006812 title "Effect of structure and morphology of carbon nanotubes on NO2 gas sensing" @default.
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