PORE STRUCTURES AND ADSORPTION PROPERTIES OF N-ALLOYED ACTIVATED CARBON FIBERS

摘要

Activated carbon fibers (ACFs) have excellent adsorption properties due to large specific surface area, pore volume, and uniform micropores. The adsorption properties of ACFs are associated with their porous structure and surface chemistry. The adsorption properties of ACFs can be controlled by chemical structures of the micropore walls. A hopeful controlling method of the pore wall chemistry is introduction of heteroatoms such as oxygen, hydrogen, nitrogen etc. The porous carbon alloyed with nitrogen atoms should have a polar nature and vary its physical property. An effective and suitable modification of ACFs in the pore structure and surface chemical nature can be achieved by chemical vapor deposition (CVD) of some heterocyclic compounds. In this study, we prepared the nitrogen-alloyed ACF using CVD of pyridine and the adsorption properties of N-alloyed ACFs for various molecules were investigated.