| Removal of Co(II) from Water Using Graphene Oxide Functionalized with TOPO |
| Paper ID : 1090-ICEE (R2) |
| Authors |
|
waleed Fekry Ahmed Khalil *, Rafat Ahmed Rayan, Ahmed Rabaa Agha Nuclear and Radiological Safety Research Center (NRSRC). Egyptian Atomic Energy Authority (EAEA). |
| Abstract |
| One of the most immense adsorbents for removing radioactive waste from water is graphene oxide nanosheet (GO). It has a large specific surface area and a variety of functional groups, including epoxide, carbonyl, carboxyl, and hydroxyl. This work has prepared GO and functionalized it with TOPO (Tri-octyl phosphine oxide). Raman spectroscopy, XRD, High-Resolution Transmission Electron Microscopy (HRTEM), and Fourier transform infrared spectroscopy utilized the unfunctionalized and functionalized GO samples. The results indicate that the produced GO-TOPO adsorbents are very effective Co (II) adsorbents in the acidic medium. The maximum adsorption of Co (II) adsorbed on GO-TOPO was approximately 134 mg/g. The ideal conditions for eliminating Co (II) from water are pH of 6 and temperature 40 °C. Langmuir and Freundlich equations have been used to describe the isothermal data. According to R square, the Langmuir model was better than the Freundlich model. |
| Keywords |
| Cobalt (II); Graphene oxide; TOPO; Adsorption; water treatment |
| Status: Accepted |