Construction of novel Pd/bacteria@ZIF‐8 nanocomposite for size‐selective catalysis

Abstract Hybrid materials with synergistic properties have been used for various applications. Herein, we report a green biosynthesis strategy for the fabrication of a novel Pd/bacteria@ZIF‐8 composite, featuring a sandwiched structure and size‐selective capabilities. The Shewanella oneidensis ( S. oneidensis ) MR‐1 was selected as the biological reductant to reduce Pd ions and synthesize Pd nanoparticles anchored on the surface of bacteria without the need for additional chemical reductants, bonding agents and toxic surfactants. This innovative sandwiched Pd/bacteria@ZIF‐8 catalyst was further coated by the ZIF‐8 to enhance its structural integrity. The as‐prepared composite exhibits significant catalytic activity and excellent size‐selective performance in the hydrogenation of olefins. This methodology opens up a horizon to designing size‐selective catalysts through constructing the sandwiched structure.