Template methods typically involve a multi-step process. First, a template, which can be organic, inorganic, or a combination of both, is chosen based on the desired properties of the final catalyst. The template is then used to direct the assembly of the catalytic materials, often through processes such as sol-gel, hydrothermal synthesis, or chemical vapor deposition. After the catalytic material has formed, the template is usually removed by methods like calcination, dissolution, or decomposition, leaving behind a structured catalyst.