title: Adsorption of ciprofloxacin, bisphenol and 2-chlorophenol on electrospun carbon nanofibers: in comparison with powder activated carbon.
abstract: Carbon nanofibers (CNFs) were prepared by electrospun polyacrylonitrile (PAN) polymer solutions followed by thermal treatment. For the first time, the influence of stabilization procedure on the structure properties of CNFs was explored to improve the adsorption capacity of CNFs towards the environmental pollutants from aqueous solution. The adsorption of three organic chemicals including ciprofloxacin (CIP), bisphenol (BPA) and 2-chlorophenol (2-CP) on electrospun CNFs with high surface area of 2326m(2)/g and micro/mesoporous structure characteristics were investigated. The adsorption affinities were compared with that of the commercial powder activated carbon (PAC). The adsorption kinetics and isotherms showed that the maximum adsorption capacities (qm) of CNFs towards the three pollutants are sequenced in the order of CIP>BPA>2-CP, which are 2.6-fold (CIP), 1.6-fold (BPA) and 1.1-fold (2-CP) increase respectively in comparison with that of PAC adsorption. It was assumed that the micro/mesoporous structure of CNFs, molecular size of the pollutants and the π electron interaction play important roles on the high adsorption capacity exhibited by CNFs. In addition, electrostatic interaction and hydrophobic interaction also contribute to the adsorption of CNFs. This study demonstrates that the electrospun CNFs are promising adsorbents for the removal of pollutants from aqueous solutions.
authors.affiliation: Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, PR China. Electronic address: klieee@dlut.edu.cn.
authors.forename: Xiaona
authors.initials: X
authors.lastname: Li
authors.affiliation: Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, PR China.
authors.forename: Shuo
authors.initials: S
authors.lastname: Chen
authors.affiliation: Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, PR China.
authors.forename: Xinfei
authors.initials: X
authors.lastname: Fan
authors.affiliation: Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, PR China.
authors.forename: Xie
authors.initials: X
authors.lastname: Quan
authors.affiliation: Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, PR China.
authors.forename: Feng
authors.initials: F
authors.lastname: Tan
authors.affiliation: Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, PR China.
authors.forename: Yaobin
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, PR China.
authors.forename: Jinsuo
authors.initials: J
authors.lastname: Gao
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry; D000327:Adsorption; D001559:Benzhydryl Compounds / Q000737:chemistry / Q000378:metabolism*; D002244:Carbon / Q000737:chemistry*; D002606:Charcoal / Q000737:chemistry; D002733:Chlorophenols / Q000737:chemistry / Q000378:metabolism*; D002939:Ciprofloxacin / Q000737:chemistry / Q000378:metabolism*; D004595:Electroplating / Q000379:methods*; D007700:Kinetics; D057139:Nanofibers / Q000737:chemistry*; D010636:Phenols / Q000737:chemistry / Q000378:metabolism*; D013499:Surface Properties; D013696:Temperature; D000098826:Bisphenol A Compounds
chemical_list: D000180:Acrylic Resins; D001559:Benzhydryl Compounds; D002244:Carbon; D002606:Charcoal; D002733:Chlorophenols; D002939:Ciprofloxacin; D010636:Phenols; C010504:polyacrylonitrile; C030683:2-chlorophenol; C006780:bisphenol A; D000098826:Bisphenol A Compounds
keywords: 2-Chlorophenol; Adsorption; Bisphenol; Ciprofloxacin; Electrospun carbon nanofibers