chemisorb
Definition
Verb: * To bind and hold a substance (such as a gas, liquid, or dissolved molecule) onto a surface through the formation of chemical bonds. This process is distinct from physical adsorption (physisorption), which involves weaker intermolecular forces.
Usage
This is a technical term used primarily in chemistry, physics, and materials science. It describes a specific type of adsorption process. * The verb is typically used with a direct object (the substance being taken up). * It often appears in passive constructions (e.g., "is chemisorbed") or in discussions comparing it to physisorption.
Examples
- Active Voice: Certain metal catalysts can chemisorb hydrogen molecules, splitting them into individual atoms.
- Passive Voice: Oxygen molecules become chemisorbed onto the clean surface of the metal, forming a stable oxide layer.
- In Context: The study compared how the two gases chemisorb versus physisorb onto the activated carbon substrate.
Advanced Usage
- Chemisorption (noun): The process or phenomenon of chemisorbing. This is the more common nominal form.
- Example: The efficiency of the catalytic converter depends on the chemisorption of pollutants onto its surface.
Variants and Related Words
- Chemisorption (n): The process of chemisorbing.
- Chemisorptive (adj): Relating to or characterized by chemisorption.
- Adsorb (v): The general term for taking up a substance onto a surface, which includes both chemisorption and physisorption.
- Physisorb (v): To adsorb a substance through physical forces (e.g., van der Waals forces) without forming chemical bonds.
Synonyms
- Chemically adsorb (This is a descriptive synonym rather than a single word).
Antonyms / Contrasting Terms
- Physisorb (v): To adsorb via physical forces.
- Desorb (v): To release a substance from an adsorbed state.
Verb
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take up a substance by chemisorption
