title: Water-insoluble sericin/β-cyclodextrin/PVA composite electrospun nanofibers as effective adsorbents towards methylene blue.
abstract: A novel water-insoluble sericin/β-cyclodextrin/poly (vinyl alcohol) composite nanofiber adsorbent was prepared by electrospinning and followed by thermal crosslinking for removal of cationic dye methylene blue from aqueous solution. Fourier transform infrared spectroscopy and solubility experiments confirmed that sericin and β-cyclodextrin were incorporated into the nanofibers and the crosslinking reaction occurred successfully. Kinetics, isotherms and thermodynamics analysis were studied for adsorption of methylene blue. The adsorption process is better fitted with the pseudo-second-order model and Langmuir isotherm model. The maximum adsorption capacities are 187.97, 229.89, and 261.10mg/g at the temperatures 293, 313 and 333 K, respectively. Thermodynamic parameters showed that methylene blue adsorption was endothermic and spontaneous. In addition, the fiber membrane adsorbent could be easily separated from dye solution and showed high recyclable removal efficiency. All these results suggest that crosslinked sericin/β-cyclodextrin/poly(vinyl alcohol) composite nanofibers could be potential recyclable adsorbents in dye wastewater treatment.
authors.affiliation: Alan G. MacDiarmid Institute, Jilin University, Changchun 130012, PR China.
authors.forename: Rui
authors.initials: R
authors.lastname: Zhao
authors.affiliation: Alan G. MacDiarmid Institute, Jilin University, Changchun 130012, PR China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Alan G. MacDiarmid Institute, Jilin University, Changchun 130012, PR China. Electronic address: xiangli@jlu.edu.cn.
authors.forename: Xiang
authors.initials: X
authors.lastname: Li
authors.affiliation: Alan G. MacDiarmid Institute, Jilin University, Changchun 130012, PR China.
authors.forename: Bolun
authors.initials: B
authors.lastname: Sun
authors.affiliation: Alan G. MacDiarmid Institute, Jilin University, Changchun 130012, PR China.
authors.forename: Ziqiao
authors.initials: Z
authors.lastname: Jiang
authors.affiliation: Alan G. MacDiarmid Institute, Jilin University, Changchun 130012, PR China. Electronic address: cwang@jlu.edu.cn.
authors.forename: Ce
authors.initials: C
authors.lastname: Wang
mesh_terms: D000327:Adsorption; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008751:Methylene Blue / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D057139:Nanofibers; D011142:Polyvinyl Alcohol / Q000737:chemistry*; D047030:Sericins / Q000737:chemistry*; D012995:Solubility; D013816:Thermodynamics; D014867:Water / Q000737:chemistry; D047392:beta-Cyclodextrins / Q000737:chemistry*
chemical_list: D047030:Sericins; D047392:beta-Cyclodextrins; D014867:Water; D011142:Polyvinyl Alcohol; C031215:betadex; D008751:Methylene Blue
keywords: Adsorption; Electrospinning; Methylene blue; Sericin; β-cyclodextrin