A polarographic study of the adsorption of aqueous aromatic nitro compound solutions on carbon black and graphite

1. Details of the isotherms for adsorption on carbon black and graphite can be explained in terms of the properties of the double electric layer. 2. Channel carbon black and graphite surfaces function as electron donors in interaction with aqueous solutions of aromatic nitro compounds. The differential change in free energy in adsorption varies linearly with the ionization potential of the absorbate molecule.