Activated carbon materials are amorphous carbon obtained through processing, with a large specific surface area and good adsorption capacity for inorganic or organic substances and colloidal particles in gases and solutions. Activated carbon materials mainly include activated carbon (A C) and activated carbon fibers (ACF). Activated carbon materials, as a high-performance adsorbent, are mainly determined by their unique adsorption surface structure characteristics and surface chemical properties. Activated carbon materials have stable chemical properties, high mechanical strength, acid resistance, alkali resistance, heat resistance, and are insoluble in water and organic solvents. They can be recycled and widely used in various fields such as chemical engineering, environmental protection, food processing, metallurgy, pharmaceutical refining, military chemical protection, etc. At present, modified activated carbon materials are widely used in fields such as sewage treatment and air pollution prevention, showing increasingly promising prospects in the treatment of environmental pollution.
More than 80% -90% of activated carbon is composed of carbon elements, which is also the reason why activated carbon is a hydrophobic adsorbent. In addition to carbon elements, there are also two types of additives: one is chemically bound elements, mainly oxygen and hydrogen, which remain in the carbon due to incomplete carbonization, or during the activation process, foreign non carbon elements chemically bind to the surface of activated carbon, such as when activated by water vapor, the surface of activated carbon is oxidized or oxidized by water vapor; Another type of admixture is ash, which is the inorganic part of activated carbon.
