Functionality Analysis of Carbon Nanosheet, Oxidized Carbon Nanosheet and Reduced Carbon Nanosheet Oxide by Using Fourier Transform Infra Red and Boehm Titration Method

Functionality analysis of carbon nanosheet (CNS), oxidized carbon nanosheet (o-CNS) and reduced carbon nanosheet oxide (r-CNSO) has been done by using fourier transform infra red (FTIR) and boehm titration methods. The results showed that the functional group differences between CNS, o-CNS and r-CNSO were variated in intensity value for FTIR spectrogram. CNS spectrogram showed a wide peak about 3400 cm⁻¹ for hydroxyl group, bond C=C vibration in 1500 cm⁻¹, epoxy and alkoxy in 1200-1100 cm⁻¹. o-CNS spectrogram shows the carboxilyc acid about 2300 cm⁻¹. Peak at 1700 cm⁻¹ showed for C=C bond of epoxy and alkoxy functional groups were shown in 1250 cm⁻¹ and 1125 cm⁻¹. Hydroxyl group of r-CNSO were showed in the 3441 cm⁻¹. The highest intensity of IR absorbance for hydroxyl group can be observed in r-CNSO. Carboxylic functional group in three carbon type was observed in 2337 cm⁻¹. Moderate peak at 1627 cm⁻¹ showed C=C group. Epoxy and alkoxy were shown in 1172 cm⁻¹ and 1056 cm⁻¹. The Boehm titration method showed that three carbon have differences amounts of funtional groups, except for the carboxylic and lactone groups. The CNS have funtional group concentration for fenolic, lactonic and base were 0.089, 0.069 and 0.082 mmol g⁻¹, respectively. The o-CNS have funtional group concentration for fenolic, lactonic and base were 0.089, 0.078 and 1.146 mmol g⁻¹, respectively. r-CNSO have funtional group concentration for fenolic, lactonic, carboxylic and base were 0.05, 0.1, 0.025 and 0.05 mmol g⁻¹, respectively.