Magnetic mesoporous carbon material with strong ciprofloxacin adsorption removal property fabricated through the calcination of mixed valence Fe based metal-organic framework

As an efficient and low cost adsorbent to remove fluoroquinolones antibiotics (such as ciprofloxacin and norfloxacin) in waste water, magnetic mesoporous carbon material has attracted increasing concern all over the world. Here, a convenient strategy to fabricate magnetic mesoporous carbon material has been explored with Fe containing metal-organic framework (MOF) as precursor. With this method, a magnetic mesoporous carbon material, Fe3O4/C , which possesses high surface area, is obtained through the calcination of a mixed valence Fe based MOF. For Fe3O4/C, its ciprofloxacin adsorption capacity reaches as high as 868.6 mg/g. Magnetic measurement reveals its ferromagnetic feature of Fe3O4/C with magnetization saturation 22.81 emu g(-1) and this guarantees its excellent magnetic separation performance. Furthermore, Fe3O4/C also exhibits outstanding stability during ciprofloxacin containing waste water treatment.