title: The preparation of novel adsorbent materials with efficient adsorption performance for both chromium and methylene blue.
abstract: The hydroxy-functionalized ionic liquids (ILs) modified with magnetic chitosan/grapheneoxide (MG-ILs-OH) were synthesized. The surface morphology of MG-ILs-OH was characterized by transmission electron microscopy, X-ray diffraction, thermo gravimetric analysis and Fourier transform infrared spectroscopy techniques. It was found that the adsorption kinetics is well fitted by a pseudo-second-order model and the adsorption isotherms agree well with the Langmuir model, and the MG-ILs-OH could be repeatedly used by simple treatment. The results showed that the addition of ILs-OH can largely increase the adsorption sites (hydroxy and amino groups) and adsorption properties. The MG-ILs-OH were used as adsorbent for the removal of methylene blue (MB) and Cr(VI) from simulated wastewater with a fast solid-liquid separation in the presence of external magnetic field. The maximum obtained adsorption capacities of MB and Cr(VI) were 243.31 and 107.99 mg/g, respectively. The application of MG-ILs-OH could effectively solve the problem that the adsorbent only adsorb similar adsorbate.
authors: Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong (University of Jinan), School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China.
authors: Leilei
authors: L
authors: Li
authors: Jinan Urban Construction Group, Jinan 250031, China.
authors: Feng
authors: F
authors: Liu
authors: Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong (University of Jinan), School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China.
authors: Huimin
authors: H
authors: Duan
authors: Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong (University of Jinan), School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China.
authors: Xiaojiao
authors: X
authors: Wang
authors: Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong (University of Jinan), School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China.
authors: Jianbo
authors: J
authors: Li
authors: Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong (University of Jinan), School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China.
authors: Yanhui
authors: Y
authors: Wang
authors: Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong (University of Jinan), School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China. Electronic address: chm_yfl518@163.com.
authors: Chuannan
authors: C
authors: Luo
mesh_terms: D000327:Adsorption; D048271:Chitosan / Q000737:chemistry; D002857:Chromium / Q000737:chemistry* / Q000302:isolation & purification; D006108:Graphite / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D052578:Ionic Liquids / Q000737:chemistry; D007700:Kinetics; D059346:Magnets / Q000737:chemistry; D008751:Methylene Blue / Q000737:chemistry* / Q000302:isolation & purification; D046529:Microscopy, Electron, Transmission; D010087:Oxides / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D013816:Thermodynamics; D062065:Wastewater / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry* / Q000302:isolation & purification; D018508:Water Purification / Q000379:methods; D014961:X-Ray Diffraction
chemical_list: D048271:Chitosan; D002857:Chromium; D006108:Graphite; D052578:Ionic Liquids; D008751:Methylene Blue; D010087:Oxides; D062065:Wastewater; D014874:Water Pollutants, Chemical
keywords: Adsorption; Chromium; Hydroxy functional; Ionic liquids; Methylene blue; Regeneration