Self-healing catalysts operate through various mechanisms that enable them to recover their activity. Some of the primary mechanisms include:
1. Reversible Structural Changes: Certain catalysts can undergo structural transformations that are reversible. When the catalyst deactivates, it can revert to its active form under specific conditions, such as temperature or pressure changes. 2. Mobility of Active Species: Some catalysts contain active species that can migrate to the surface or active sites when needed, replenishing the catalytic activity. 3. Regenerative Reactions: In some cases, the catalyst can participate in regenerative side reactions that help restore its active state. 4. Incorporation of Healing Agents: Some self-healing catalysts are designed with embedded healing agents that are released upon damage, initiating a repair process.
