Highly Enhanced Vapor Sensing of Multiwalled Carbon Nanotube Network Sensors by n-Butylamine Functionalization

Figure 4

(a) XPS survey spectra of pure and BuNH₂ treated MWCNTs. (b) Deconvoluted high resolution XPS peak C1s with functional groups for pure MWCNTs. (c) Deconvoluted high resolution XPS peak C1s with functional groups for MWCNT (BuNH₂). (d) High resolution XPS spectra obtained in the N1s bonding energy region for MWCNT (BuNH₂).

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