Fabrication of porous Pd/C microspheres in carbon aerogels by radiation method

The porous Pd/C microspheres were fabricated in carbon aerogels by γ-irradiation of PdCl2 solution with carbon aerogels (CAs) monoliths impregnated. The obtained samples were characterized by field emission scanning electron microscope (SEM) and transmission electron microscope (TEM). The results show that the well distributed Pd/C microspheres with different size presented in the network of carbon aerogels. The Pd/C microspheres are spherical with porous structure. The structure of Pd/C microspheres is different from the Pd particles doped in carbon aerogels by wet impregnation method. Such porous Pd/C microspheres/carbon aerogels composite exhibits higher hydrogen uptake capacity than Pd-doped carbon aerogels.