Figure 6.

The mechanism of the gas mixture's chemical reaction. The mechanism when (a) the surface of the C-SWCNT consists of -COOH. (b) The surface of the C-SWCNT consists of -COO or -OH at 150°C. Detection of a CO and NH3 gas mixture using carboxylic acid-functionalized single-walled carbon nanotubes.

Dong et al. Nanoscale Research Letters 2013 8:12   doi:10.1186/1556-276X-8-12
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