摘要

A combustion flame method is developed for the convenient and scalable fabrication of single-and dual-doped carbon quantum dots (CQDs) (N-CQDs, B-CQDs, P-CQDs, and S-CQDs and dual-doped B, N-CQDs, P, N-CQDs, and S, N-CQDs), and the doping contents can be easily adjusted by simply changing the concentrations of precursors in ethanol. These single/dual-doped CQDs, especially B, N-CQDs, show high catalytic activities for the oxygen reduction reaction.