adsorption energy

Adsorption energy refers to the amount of energy released or absorbed when a substance (like a gas or molecule) attaches itself to a surface (such as a solid material). It's a measure of the interaction strength between the molecule and the surface. If the adsorption energy is high and negative, it means the molecule binds strongly, releasing more energy. Conversely, a low or positive value indicates weaker attachment. Understanding adsorption energy helps in designing materials for sensors, catalysts, and filtration by evaluating how effectively substances stick to surfaces.