Research Article

Surface Modification of Carbon Nanotube Networked Films with Au Nanoclusters for Enhanced N O 2 Gas Sensing Applications

Figure 4

(a) Time response of the NO2 gas chemiresistor based on Co grown RF-PECVD MWCNT films, functionalized with Au-loading of 2.5, 5, and 10 nm, at working temperature of 200°C. The MWCNTs thickness is about 250–300 nm. The inset plots the calibration curves for four CNT sensors toward NO2 gas at 200°C. (b) Time response of the NO2 gas chemiresistor based on Co grown RF-PECVD 250–300 nm-thick MWCNT films, functionalized with Au-loading of 5 nm at working temperature of 250°C.
107057.fig.004a
(a)
107057.fig.004b
(b)