| 초록 |
Currently, graphene oxide (GO) and GO-based materials are widely investigated for their immense potential to be utilized in various applications such as optoelectronics, electronics and separation membranes. In general, GO is utilized as an insulator due to its oxygen functional groups while it can also be employed as a conductive material by controlling the areas of graphitic region. Here we report controlling of graphitic regions for improving electrical and electrochemical properties of GO via systematic approaches to change hydrothermal conditions, such as thermal temperature and time. In particular, epoxy and hydroxyl functional groups diffuse and form oxygen islands along with the basal-plane by thermal stimuli. As a result, electronic properties of GO such as sheet resistance and electrochemical properties were controlled by hydrothermal treatment without any hazard chemical agents. |
