title: Flexible Electrospun Carbon Nanofiber/Tin(IV) Sulfide Core/Sheath Membranes for Photocatalytically Treating Chromium(VI)-Containing Wastewater.
abstract: We report an efficient method for fabricating flexible membranes of electrospun carbon nanofiber/tin(IV) sulfide (CNF@SnS2) core/sheath fibers. CNF@SnS2is a new photocatalytic material that can be used to treat wastewater containing high concentrations of hexavalent chromium (Cr(VI)). The hierarchical CNF@SnS2core/sheath membranes have a three-dimensional macroporous architecture. This provides continuous channels for the rapid diffusion of photoelectrons generated by SnS2nanoparticles under visible light irradiation. The visible light (λ > 400 nm) driven photocatalytic properties of CNF@SnS2are evaluated by the reduction of water-soluble Cr(VI). CNF@SnS2exhibits high visible light-driven photocatalytic activity because of its low band gap of 2.34 eV. Moreover, CNF@SnS2exhibits good photocatalytic stability and excellent cycling stability. Under visible light irradiation, the optimized CNF@SnS2membranes exhibit a high rate of degradation of 250 mg/L of aqueous Cr(VI) and can completely degrade the Cr(VI) within 90 min.
authors.affiliation: College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, China.
authors.forename: Yunlei
authors.initials: Y
authors.lastname: Zhong
authors.affiliation: College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, China.
authors.forename: Xun
authors.initials: X
authors.lastname: Qiu
authors.affiliation: College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, China.
authors.forename: Dongyun
authors.initials: D
authors.lastname: Chen
authors.affiliation: College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, China.
authors.forename: Najun
authors.initials: N
authors.lastname: Li
authors.affiliation: College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, China.
authors.forename: Qingfeng
authors.initials: Q
authors.lastname: Xu
authors.affiliation: College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, China.
authors.forename: Hua
authors.initials: H
authors.lastname: Li
authors.affiliation: College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, China.
authors.forename: Jinghui
authors.initials: J
authors.lastname: He
authors.affiliation: College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, China.
authors.forename: Jianmei
authors.initials: J
authors.lastname: Lu
keywords: CNF@SnS2; electrospun carbon nanofiber; hexavalent chromium wastewater; nanofiber membrane; visible light-driven photocatalyst