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Table 2

FTIR analysis of activated and non-activated CNPs

Wavenumber (1/cm)
Chemical functional groups
Activated CNPsNon-activated CNPs
699 700 C-H vibration (Ahmad et al. 2020) 
765 729 NO2 bending vibration (out of plane) in aromatic nitro groups (Mamun et al. 2016) 
796 794 Ethyl groups (Jovanovic et al. 2009) 
1376 1376 N-CH3 (Misra et al. 2007) 
1461 1461 CNT/MWCNTs vibrational modes (Misra et al. 2007) 
2872 2871 C-H bonds (Azmina et al. 2011, Mamun et al. 2016) 
2935 2929 C-H bonds (Azmina et al. 2011, Mamun et al. 2016) 
Wavenumber (1/cm)
Chemical functional groups
Activated CNPsNon-activated CNPs
699 700 C-H vibration (Ahmad et al. 2020) 
765 729 NO2 bending vibration (out of plane) in aromatic nitro groups (Mamun et al. 2016) 
796 794 Ethyl groups (Jovanovic et al. 2009) 
1376 1376 N-CH3 (Misra et al. 2007) 
1461 1461 CNT/MWCNTs vibrational modes (Misra et al. 2007) 
2872 2871 C-H bonds (Azmina et al. 2011, Mamun et al. 2016) 
2935 2929 C-H bonds (Azmina et al. 2011, Mamun et al. 2016) 
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