▎ 摘　　要

Catalyst support alters the electronic structure of metal catalysts, resulting in an enhanced activity. In this study, nitrogen-doped defective graphene nanosheet-supported Pt nanoparticles (2.8 nm) (Pt/N-dGN) were prepared and successfully used as electrocatalysts in the sequential and transient catalysis of the neutral d-glucose oxidation reaction (GOR). The Pt nanoparticles were determined to be single crystals enclosed with the (110) plane. The spherical-aberration-corrected field transmission electron microscopy image revealed a Pt/N-dGN bearing with point vacancies, 5-8-5, 5-9, and 5-7-7-5 defects. N-dGN was prepared by fast exfoliation and sequential nitrogen doping with urea using a sonoelectrochemical and hydrothermal method. The Pt/N-dGN with a Pt binding energy of 71.4 eV showed significant mass activity (7.83 x 10(19) molecules g(Pt)(-1)) toward the sequential catalysis of neutral GOR. The electron transfer number was 2.71 and approximately two-electron transfer mechanisms occurred. The repeated currents of GORs were observed in the catalysis from the 2nd cycle to the 25th cycle.