Abstract:
The aim of this research is to prepare carbon films from bacteria cellulose (BC), which is a naturally renewable material. The flame retardant polyaniline (PANi) and indigo dye (DYE) containing nitrogen were added to increase the stability and improve the carbon yield of carbon films. The ratios of BC to PANi and BC to DYE were 1: 0.25, 1: 0.5 and 1:1. The precursor films were then subject to stabilization at 330 oC and carbonization at 800 oC. The result shows that, the carbon films prepared from cellulose bacteria/indigo dye can improve the carbon yield from 2.8% to 22.3% for BC and 1:1 BC/DYE, respectively. In addition, the indigo dye increases the stability of BC. Conversely, the carbon films prepared from cellulose/polyaniline bacteria are brittle and not stable. The precursor films from both substrates undergo carbonization, a clearer carbon structure can be seen. The Raman spectroscopy displays the Raman spectra of D-band and G-band at 1350 cm-1 and 1600 cm-1, respectively. The XRD diffractogram showed a peak signal at a 1:1 BC/DYE, but no peak signal was observed in the BC/PANi samples at all ratios, indicating that the dye content played a role in inducing the graphitic structure. The effect of carbonyl dye (a nitrogen containing dye) on morphology, carbon yield and electrochemical performance as an organic electrode was revealed.