• 文献标题:   Influence of thermochemical reduction on magnetic properties of reduced graphene oxide aerogels
  • 文献类型:   Article
  • 作  者:   TADYSZAK K, SCHEIBE B, OSTROWSKI A, MUSIAL A, WYCHOWANIEC JK
  • 作者关键词:   graphene oxide, reduced graphene oxide aerogel, vibrating sample magnetometry, electron paramagnetic resonance, hydrothermal synthesi
  • 出版物名称:   JOURNAL OF PHYSICS CHEMISTRY OF SOLIDS
  • ISSN:   0022-3697 EI 1879-2553
  • 通讯作者地址:  
  • 被引频次:   2
  • DOI:   10.1016/j.jpcs.2020.109898
  • 出版年:   2021

▎ 摘  要

The application of two-dimensional (2D) materials as a building component for aerogels formation allows obtaining three-dimensional (3D) structures featured by remarkable physiochemical properties. One of the most commonly applied 2D materials for the aerogels fabrication is a graphene oxide (GO), which can undergo chemical or thermal reduction forming a reduced graphene oxide (rGO) porous network. Interestingly, the influence of the reduction process on the magnetic properties of rGO-based aerogels is still uncharted. This article sheds a light onto interdependence between reducing agents (hydrazine, sodium borohydride, ethane-1,2-diamine, citric acid, ascorbic acid), which were applied during GO hydrothermal reduction, and the magnetic properties of thereby formed rGO aerogels. The magnetic characterization was performed by vibration magnetometer (VSM) and electron paramagnetic resonance (EPR) in the temperature range of 4-300 K. It was found that the choice of reducing agent significantly affects the resulting magnetic properties of aerogels. This is directly linked to the spatial organization of the defects and localization of conduction electrons in rGO hexagonal lattice.