The temperature of oxidation modification of carbon aerogels by using nitric acid and the influence of
the oxidation temperature on its structure and property was studied in order to obtain the carbon aerogels with good dis
persion and electric conductivity. Carbon aerogels before and after oxidation treatment were characterized by the FTIR,
XPS,Zeta potential, XRD and N2 isothermal adsorption desorption techniques. It was found that the dispersion stabili
ty of the carbon aerogels was closely associated with the oxygen containing functional groups on the surface. For com
parison,conductivity of carbon aerogels was well kept after oxidation treatment by HNO3 at low temperature rather than
that at high temperature (40℃, 87. 7% vs. 100℃, 2. 5%), which was attributed to the higher number of micro
pores formed at high temperature.