SURFACE CHARACTERIZATION OF OXIDIZED ACTIVATED CARBON CLOTH

Cellulose based activated carbon cloth has been oxidized by air, nitri c acid, hydrogen peroxide and iron nitrate cristallohydrate melt treat ments. Thermogravimetric analysis, selective neutralization, X-ray pho toelectron spectroscopy and electrical resistance measurements have be en applied to characterize the products. The amount and type of oxygen surface groups have been determined for the different oxidation proce dures. The amount of surface groups formed decrease with oxidation pro cedure in the order: iron nitrate, nitric acid, air and hydrogen perox ide. (C) 1997 Elsevier Science Ltd.