Abstract
Carbon aerogels were prepared by carbonizing the organic resorcinol-formaldehyde (RF) aerogels at 700 °C for two hours in N2 flow. The organic RF aerogels were supercritical dried materials of the wet gel, which were the condensation products of resorcinol with formaldehyde at 1:2 fix molar ratio, where distilled water served as solvent, and sodium carbonate as the base catalyst. Based on the results of Atomic Force Microscope (AFM) and Transmission Electrical Microscope (TEM), the surface profile of the samples was discussed. Compared with the results of N2 adsorption and desorption, it can be revealed that the pore size distribution plot derived from the branch of N2 adsorption isotherm is approximate to the true description of pore size distribution. The results of Fourier-Transform Infrared (FT-IR) spectra, Raman spectra and X-Ray Diffraction (XRD) showed that the three dimension network structure is mainly organized by carbon-carbon bands adjoined as aromatic strings in plane. There is no any stretch and bend in it after RF aerogel is carbonized at 700 °C for two hours in N2 flow.
