ACKNOWLEDGMENTS This work was supported by the National Natural Science Foundation of China (No.21101105 and No.51174274), Innovation Program supported by Shanghai Municipal Education Commission (No.12ZZ195 and No.13YZ134), Shanghai Educational Development Foundation and the Shanghai Municipal Education Commission (No.12CG66), "Shu Guang" Project supported by Shanghai Municipal Education Commission (No.09SG54), and Shanghai Municipal Natural Science Foundation (No.13ZR1454800).
A facile impregnation method under mild condition is designed for synthesis of highly dispersed Pt nanoparticles with a narrow size of 4-7 nm on nitrogen-doped carbon nanotubes (CNx). CNx do not need any pre-surface...