Volume 7 Issue 3
Jun.  2022
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He Zhao, Juehua Wang, Zhuangjun Fan, Yongbing Xie, Di Zhang, Shanshan Sun, Yi Zhang, Hongbin Cao. A facial synthesis of nitrogen-doped reduced graphene oxide quantum dot and its application in aqueous organics degradation. Green Energy&Environment, 2022, 7(3): 440-448. doi: 10.1016/j.gee.2020.10.008
Citation: He Zhao, Juehua Wang, Zhuangjun Fan, Yongbing Xie, Di Zhang, Shanshan Sun, Yi Zhang, Hongbin Cao. A facial synthesis of nitrogen-doped reduced graphene oxide quantum dot and its application in aqueous organics degradation. Green Energy&Environment, 2022, 7(3): 440-448. doi: 10.1016/j.gee.2020.10.008

A facial synthesis of nitrogen-doped reduced graphene oxide quantum dot and its application in aqueous organics degradation

doi: 10.1016/j.gee.2020.10.008
  • N-doped reduced graphene oxide quantum dots (N-rGQDs) have attracted more and more attention in efficient catalytic degradation of aqueous organic pollutants. However, the synthesis of N-rGQDs is generally a complex and high energy required process for the reduction and N-doping steps. In this study, a facile and green fabrication approach of N-rGQDs is established, based on a metal-free Fenton reaction without additional energy-input. The N structures of N-rGQDs play a significant role in the promotion of their catalytic performance. The N-rGQDs with relatively high percentage of aromatic nitrogen (NAr-rGQDs) perform excellent catalytic activities, with which the degradation efficiency of pollutant is enhanced by 25 times. Density functional theory (DFT) calculation also indicates aromatic nitrogen structures with electron-rich sites are prone to transfer electron, presenting a key role in the catalytic reaction. This metal-free Fenton process provides a green and cost-effective strategy for one-step fabrication of N-rGQDs with controllable features and potential environmental catalytic applications.

     

  • These two authors equally contributed to this paper.
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