Chemisorption

Chemisorption is a subtype of adsorption where a molecule or atom adheres to a surface via the formation of a chemical bond. This process is of significant importance in various fields such as chemistry, physics, and material science.

Overview

Chemisorption is a surface phenomenon that involves the chemical bonding of an adsorbate to an adsorbent. Unlike physisorption, which involves weak van der Waals forces, chemisorption involves the formation of strong chemical bonds. This results in a much stronger interaction between the adsorbate and the adsorbent, leading to a more stable adsorption.

Mechanism

The mechanism of chemisorption involves the interaction of an adsorbate with the surface of an adsorbent. This interaction leads to the formation of a new chemical bond, which is typically stronger than the forces involved in physisorption. The process of chemisorption can be described by the Langmuir adsorption model, which assumes that adsorption occurs at specific homogeneous sites on the adsorbent.

Applications

Chemisorption has a wide range of applications in various fields. In catalysis, chemisorption is a crucial step in the catalytic process, as it allows for the adsorption of reactants onto the catalyst surface. In material science, chemisorption is used to modify the properties of materials, such as their electrical conductivity and optical properties. In environmental science, chemisorption is used in the removal of pollutants from the environment.

See also

• Adsorption
• Physisorption
• Catalysis
• Material science
• Environmental science

References

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