Supported palladium nanoparticles: An efficient catalyst for the direct formation of H₂O₂ from H₂ and O₂

Ex situ synthesis is the key: Palladium nanoparticles having a narrow size distribution around 3.6 nm have been synthesized in a liquid phase and then loaded onto a carbon support with an overall efficiency of 85%. The resulting nanoparticles, which retained their size and morphology, were exceptionally active and selective as a catalyst for the direct formation of H ₂O₂ from H₂ and O₂ in ethanol. (Figure Presented).