title: Novel magnetic porous carbon spheres derived from chelating resin as a heterogeneous Fenton catalyst for the removal of methylene blue from aqueous solution.
abstract: Porous magnetic carbon spheres (MCS) were prepared from carbonized chelating resin composites derived from ethylenediaminetetraacetic acid-modified macroporous polystyrene (PS-EDTA) resin, and then loaded with iron composites via ion exchange. The resulting composites were characterized for this study using X-ray diffraction, MÖssbauer spectroscopy, and Raman spectroscopy, X-ray photoelectron spectroscopy, Brunauer-Emmett-Teller surface area method, scanning electron microscopy, and vibrating sample magnetometry. The porous magnetic carbon spheres were then used, in the existence of H2O2 and NH2OH, with a view to remove methylene blue from the aqueous solution by catalyze a heterogeneous Fenton reaction. Results indicated excellent removal rates and removal efficiency for this catalytic system. Optimal degradation was achieved (nearly 100% within 10 min) using initial concentrations of 5 mmol H2O2 L(-1), 2.5 mmol L(-1) NH2OH and 40 mg L(-1) methylene blue. The catalyst retained its activity after six reuses, indicating strong stability and reusability. Porosity of the catalyst contributed to its high activity, suggesting its potential application for the industrial treatment of wastewater.
authors: State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou 730000, PR China.
authors: Junjun
authors: J
authors: Ma
authors: State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou 730000, PR China. Electronic address: zhoulc@lzu.edu.cn.
authors: Lincheng
authors: L
authors: Zhou
authors: State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou 730000, PR China.
authors: Wenfeng
authors: W
authors: Dan
authors: State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou 730000, PR China.
authors: He
authors: H
authors: Zhang
authors: State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou 730000, PR China.
authors: Yanming
authors: Y
authors: Shao
authors: State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou 730000, PR China.
authors: Chao
authors: C
authors: Bao
authors: State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou 730000, PR China.
authors: Lingyun
authors: L
authors: Jing
mesh_terms: D002244:Carbon / Q000737:chemistry*; D002384:Catalysis; D002614:Chelating Agents / Q000737:chemistry*; D004492:Edetic Acid / Q000737:chemistry; D006861:Hydrogen Peroxide / Q000737:chemistry*; D007501:Iron / Q000737:chemistry*; D008280:Magnetics; D008751:Methylene Blue / Q000302:isolation & purification*; D056951:Photoelectron Spectroscopy; D016062:Porosity; D012117:Resins, Synthetic / Q000737:chemistry*; D015204:Spectroscopy, Mossbauer; D013059:Spectrum Analysis, Raman; D062065:Wastewater / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D002244:Carbon; D002614:Chelating Agents; D004492:Edetic Acid; D006861:Hydrogen Peroxide; D007501:Iron; D008751:Methylene Blue; D012117:Resins, Synthetic; D062065:Wastewater; C045076:Fenton's reagent
keywords: Degradation; Fenton-like catalytic; Ion-exchange; Magnetic carbon spheres; Methylene blue