查看文章

A series of activated carbons were prepared by carbonization of polyaniline at different temperatures, using KOH or K₂CO₃ as activating agent. Pure microporous or micro/mesoporous activated carbons were obtained depending on the preparation conditions. Carbonization temperature has been proven to be a key parameter to define the textural properties of the carbon when using KOH. Low carbonization temperatures (400–650 °C) yield materials with a highly developed micro- and mesoporous structure, whereas high temperatures (800 °C) yield microporous carbons. Some of the materials prepared using KOH exhibit a BET surface area superior to 4000 m²/g, with total pore volume exceeding 2.5 cm³/g, which are among the largest found for activated carbons. On the other hand, microporous materials are obtained when using K₂CO₃, independently of carbonization temperature. Some of the materials were …