Dispersion, adsorbent material for pfas, environmental improvement method, powder for environmental improvement liquid, method for dispersing porous carbon material, porous carbon material, and filter

A porous carbon material of plant origin, wherein

• a value of a specific surface area measured by a nitrogen BET method is 10 m2/g or more,
• a volume of a pore measured by a BJH method and an MP method is 0.1 cm3/g or more, and
• a ratio of a KM value (KM value ratio) of a peak near 620 cm−1 to an average value (average KM value) of Kubelka-Munk intensity values (KM values) at wavenumbers of 670 to 580 cm−1 of an absorption spectrum obtained by Kubelka-Munk conversion of a relative diffuse reflectance indicating a ratio of diffuse reflected light to total reflected light of light incident on a material is 0.3 or less.

A porous carbon material of plant origin, wherein

• a value of a specific surface area measured by a nitrogen BET method is 10 m2/g or more,
• a volume of a pore measured by a BJH method and an MP method is 0.1 cm3/g or more, and
• a ratio of a KM value (KM value ratio) of a peak near 810 cm−1 to an average value (average KM value) of Kubelka-Munk intensity values (KM values) at wavenumbers 870 to 730 cm−1 of an absorption spectrum obtained by Kubelka-Munk conversion of a relative diffuse reflectance indicating a ratio of diffuse reflected light to total reflected light of light incident on a material is 0.3 or less.