title: One-step solvothermal synthesis of magnetic Fe3O4-graphite composite for Fenton-like degradation of levofloxacin.
abstract: A novel Fe3O4-graphite composite was prepared, characterized, and investigated as a heterogeneous Fenton-like catalyst for the degradation of levofloxacin (LEV) in an aqueous solution. The results revealed that the Fe3O4-graphite composite exhibited excellent properties for the degradation and mineralization of LEV, achieving a nearly complete degradation of 50 mg L(-1) LEV in 15 min and 48% of total organic carbon removal in 60 min under optimal conditions. A large electronic conjugation structure exists in graphite, which may lead to the fast production of •OH radical species because of the easy reduction of Fe(III) to Fe(II). In addition, we observed that the graphite can degrade LEV in the presence of H2O2. Therefore, the synergistic results of the graphite structure and Fe3O4 magnetic nanoparticles (MNPs) may contribute to the high catalytic activity of the Fe3O4-graphite composite. Compared with pure Fe3O4 MNPs, lesser iron leaching of the Fe3O4-graphite composite was observed during the degradation of LEV. The degradation efficiency of LEV remained approximately 80% at the fifth recycling run, which indicates that the Fe3O4-graphite composite has potential applications in water treatment for removing organic pollutants.
authors.affiliation: a College of Chemistry, Jilin University , Changchun , China.
authors.forename: Long
authors.initials: L
authors.lastname: Wang
authors.affiliation: a College of Chemistry, Jilin University , Changchun , China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Zhao
authors.affiliation: a College of Chemistry, Jilin University , Changchun , China.
authors.forename: Juan
authors.initials: J
authors.lastname: Hou
authors.affiliation: a College of Chemistry, Jilin University , Changchun , China.
authors.forename: Jin
authors.initials: J
authors.lastname: Yan
authors.affiliation: a College of Chemistry, Jilin University , Changchun , China.
authors.forename: Fengshuang
authors.initials: F
authors.lastname: Zhang
authors.affiliation: a College of Chemistry, Jilin University , Changchun , China.
authors.forename: Jiahui
authors.initials: J
authors.lastname: Zhao
authors.affiliation: b State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University , Changchun , China.
authors.forename: Hong
authors.initials: H
authors.lastname: Ding
authors.affiliation: b State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University , Changchun , China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Li
authors.affiliation: a College of Chemistry, Jilin University , Changchun , China.
authors.forename: Lan
authors.initials: L
authors.lastname: Ding
mesh_terms: D052918:Environmental Restoration and Remediation / Q000379:methods*; D005290:Ferric Compounds / Q000378:metabolism*; D006108:Graphite / Q000378:metabolism*; D064704:Levofloxacin / Q000378:metabolism*; D062065:Wastewater / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000378:metabolism*; D018508:Water Purification / Q000379:methods*
chemical_list: D005290:Ferric Compounds; D006108:Graphite; D064704:Levofloxacin; D062065:Wastewater; D014874:Water Pollutants, Chemical
keywords: Fe3O4–graphite composite; Fenton-like degradation; Levofloxacin; solvothermal synthesis