Pd nanoparticles deposited by sot-immobilization on N-doped nanocarbon are studied in the direct synthesis of H2O2 and compared with undoped catalysts or prepared by the same Pd deposition method on active carbon (Vulcan XC-72) The Pd on N-CNT-like gives high productivities to H2O2 comparable to the best literature results The introducing of nitrogen in the CNT-like material favors not only the dispersion of Pd (with a consequent improvement of the activity) but also the specific turnover However the introduction of these N functionalities on the surface has also a negative effect on the rate of H2O2 consecutive conversion to water (C) 2010 Elsevier B V All rights reserved