• 文献标题:   Mutual modulation of F-distribution and N-configuration in F and N dual-functionalized graphene
  • 文献类型:   Article
  • 作  者:   LIU Y, SHEN P, FENG LH, WU Y, CHEN MM, SUN YY, FENG Q, CAO DW
  • 作者关键词:   mutual modulation, dualfunctionalized graphene, fdistribution, nconfiguration, photoluminescence
  • 出版物名称:   APPLIED SURFACE SCIENCE
  • ISSN:   0169-4332 EI 1873-5584
  • 通讯作者地址:   Jiangsu Univ
  • 被引频次:   0
  • DOI:   10.1016/j.apsusc.2018.09.245
  • 出版年:   2019

▎ 摘  要

Fluorination and N-doping are two feasible routes to modify the properties of graphene. However, it's difficult to modulate the F-distribution and N-configuration. Here, we found that by the mutual influence between F and N atoms, F-distribution and N-configuration can be facilely modulated. In brief, by annealing F and N dual-functionalized graphene, (i) F-distribution tended to be discrete, and (ii) graphitic N-configuration was progressively converted to pyridinic, and pyridinic to pyrrolic N-configuration. Theoretical calculations indicated that the modulation of F-distribution was due to the adsorptive ability of N atoms, and N-configuration was modulated because F decreased the stability of N-configuration. Furthermore, we found that the mutual modulation of F-distribution and N-configuration could reinforce the radiative recombination of electron-hole pairs, which increased the photoluminescence intensity to 320.69%. This work provides a facile strategy to modulate the distribution and configuration of heteroatoms, broadening the potential applications of dual-functionalized graphene.