Nanoporous materials with unique 3D interconnected networks have large specific surface area and high-density activate sites, making them ideal candidates for various catalytic applications. One method of enhancing the catalytic activity is tuning the surface strain, which can be mechanically controlled thereby the macroscopic elasticity becomes important. Here, the micro-kinetic dynamics combined with elastic theory is built to reveal the elasticity-dependent catalytic efficiency for nanoporous materials. High catalytic efficiency can be realized by improving the elasticity of material, relying on the ranges of porosity, ligament size and surface stress. When the porosity (or surface stress) exceeds the critical value, the role of elasticity on catalytic efficiency transforms from promotion to reduction; while this reduction-to-promotion transformation occurs for the ligament size exceeded 10 nm. These results provide fundamental messages for tailoring the catalytic performance of nanoporous materials by controlling the macroscopic elasticity.
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