Several techniques are employed to apply advanced coatings on catalytic materials:
1. Chemical Vapor Deposition (CVD): This process involves the deposition of a solid material from a gaseous phase, providing uniform and high-purity coatings. 2. Physical Vapor Deposition (PVD): In PVD, materials are vaporized in a vacuum and deposited onto the catalytic substrate, forming a thin and uniform coating. 3. Sol-Gel Method: This involves the transition of a solution into a solid gel, allowing for the formation of porous and homogeneous coatings. 4. Electrodeposition: This electrochemical process deposits a material onto a substrate through the reduction of metal ions, offering precise control over coating thickness.