title: Highly efficient removal of pathogenic bacteria with magnetic graphene composite.
abstract: Magnetic Fe3O4/graphene composite (abbreviated as G-Fe3O4) was synthesized successfully by solvothermal method to effectively remove both bacteriophage and bacteria in water, which was tested by HRTEM, XRD, BET, XPS, FTIR, CV, magnetic property and zeta-potential measurements. Based on the result of HRTEM, the single-sheet structure of graphene oxide and the monodisperse Fe3O4 nanoparticles on the surface of graphene can be observed obviously. The G-Fe3O4 composite were attractive for removing a wide range of pathogens including not only bacteriophage ms2, but also various bacteria such as S. aureus, E. coli, Salmonella, E. Faecium, E. faecalis, and Shigella. The removal efficiency of E. coli for G-Fe3O4 composite can achieve 93.09%, whereas it is only 54.97% with pure Fe3O4 nanoparticles. Moreover, a detailed verification test of real water samples was conducted and the removal efficiency of bacteria in real water samples with G-Fe3O4 composite can also reach 94.8%.
authors: College of Environmental Science and Engineering, Key Laboratory of Environmental Pollution Process and Environmental Criteria, Nankai University , Tianjin 300071, P. R. China.
authors: Sihui
authors: S
authors: Zhan
authors: Dandan
authors: D
authors: Zhu
authors: Shuanglong
authors: S
authors: Ma
authors: Wenchao
authors: W
authors: Yu
authors: Yanan
authors: Y
authors: Jia
authors: Yi
authors: Y
authors: Li
authors: Hongbing
authors: H
authors: Yu
authors: Zhiqiang
authors: Z
authors: Shen
mesh_terms: D000327:Adsorption; D001419:Bacteria / Q000737:chemistry* / Q000302:isolation & purification; D001435:Bacteriophages / Q000737:chemistry; D005618:Fresh Water / Q000382:microbiology*; D006108:Graphite / Q000737:chemistry*; D060328:Magnetic Phenomena; D058185:Magnetite Nanoparticles / Q000737:chemistry*; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry*; D018508:Water Purification / Q000295:instrumentation* / Q000379:methods
chemical_list: D058185:Magnetite Nanoparticles; D011108:Polymers; D006108:Graphite
keywords: graphene; magnetic nanoparticles; pathogenic bacteria