title: Recyclable removal of bisphenol A from aqueous solution by reduced graphene oxide-magnetic nanoparticles: adsorption and desorption.
abstract: Reduced graphene oxide (rGO) nanosheets decorated with tunable magnetic nanoparticles (MNPs) were synthesized by a simple co-precipitation method and employed for recyclable removal of bisphenol A (BPA) from aqueous solution. The morphological characterization shows that Fe3O4 nanoparticles are uniformly deposited on rGO sheets. The magnetic characterization demonstrates that composites with various amounts of Fe3O4 nanoparticles are superparamagnetic. Due to the superparamagnetism, rGO-MNPs were used as recyclable adsorbents for BPA removal in aqueous solution. The kinetics of the adsorption process and the adsorption isotherm were investigated. The results indicate that the adsorption process is fitted to Langmuir model and the composites with lower density of MNPs represent better adsorption ability. In addition, its kinetics follows pseudo-second-order rate equation. Moreover, the adsorbents could be recovered conveniently by magnetic separation and recyclable used because of the easy desorption of BPA.
authors.affiliation: Department of Chemistry, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China.
authors.forename: Yixuan
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Shanghai Entry-Exit Inspection and Quarantine Bureau, Shanghai 200135, China.
authors.forename: Yuxiao
authors.initials: Y
authors.lastname: Cheng
authors.affiliation: Department of Chemistry, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China.
authors.forename: Ningning
authors.initials: N
authors.lastname: Chen
authors.affiliation: Shanghai Entry-Exit Inspection and Quarantine Bureau, Shanghai 200135, China.
authors.forename: Yuyan
authors.initials: Y
authors.lastname: Zhou
authors.affiliation: Department of Chemistry, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China.
authors.forename: Bingyu
authors.initials: B
authors.lastname: Li
authors.affiliation: Department of Chemistry, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Gu
authors.affiliation: Department of Chemistry, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China.
authors.forename: Xinhao
authors.initials: X
authors.lastname: Shi
authors.affiliation: Department of Chemistry, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China. Electronic address: yzxian@chem.ecnu.edu.cn.
authors.forename: Yuezhong
authors.initials: Y
authors.lastname: Xian
mesh_terms: D000327:Adsorption; D001559:Benzhydryl Compounds / Q000302:isolation & purification*; D006108:Graphite / Q000737:chemistry*; D007700:Kinetics; D008280:Magnetics; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles; D010084:Oxidation-Reduction; D010087:Oxides / Q000737:chemistry; D010636:Phenols / Q000302:isolation & purification*; D059027:Recycling; D013816:Thermodynamics; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D000098826:Bisphenol A Compounds
chemical_list: D001559:Benzhydryl Compounds; D006108:Graphite; D010087:Oxides; D010636:Phenols; D014874:Water Pollutants, Chemical; C006780:bisphenol A; D000098826:Bisphenol A Compounds
keywords: Adsorption; Bisphenol A; Desorption; Magnetic nanoparticles; Reduced graphene oxide