• 文献标题:   A facial synthesis of nitrogen-doped reduced graphene oxide quantum dot and its application in aqueous organics degradation
  • 文献类型:   Article
  • 作  者:   ZHAO H, WANG JH, FAN ZJ, XIE YB, ZHANG D, SUN SS, ZHANG Y, CAO HB
  • 作者关键词:   reduced graphene oxide quantum dots rgqds, ndoping, green fabrication, onestep, metal free fenton reaction
  • 出版物名称:   GREEN ENERGY ENVIRONMENT
  • ISSN:   2096-2797 EI 2468-0257
  • 通讯作者地址:  
  • 被引频次:   8
  • DOI:   10.1016/j.gee.2020.10.008 EA MAR 2022
  • 出版年:   2022

▎ 摘  要

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 (N-Ar-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. (C) 2020 Institute of Process Engineering, Chinese Academy of Sciences. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co., Ltd.