BET plot

A BET (Brunauer–Emmett–Teller) plot is a graph used to analyze how a material, often a porous solid like activated carbon, absorbs gas molecules, typically nitrogen. By plotting the amount of gas adsorbed against the pressure, it helps determine the surface area and porosity of the material. Essentially, it provides insights into how much surface is available for reactions or adsorption, which is crucial for applications like filtration, catalysis, or energy storage. The BET plot is a standard tool for understanding the nanoscale structure of materials and their capacity to interact with gases.