title: Rationally designed porous polystyrene encapsulated zirconium phosphate nanocomposite for highly efficient fluoride uptake in waters.
abstract: Fluoride pollution in waters has engulfed worldwide regions and an excess of fluoride intake always causes skeletal fluorosis. Herein, a novel hybrid nanomaterial ZrP-MPN was fabricated for fluoride retention by encapsulating nano-ZrP onto macroporous polystyrene materials modified with quaternary ammonium groups. The as-obtained materials exhibited favorable removal of fluoride ions from aqueous solution in presence of common anions (SO4(2-)/NO3(-)/Cl(-)) at high contents. Moreover outstanding sorption properties were also detected by involving series of commercial adsorbents (AA/magnetite/GFH/manganese sands) as references. Such satisfactory performances might be ascribed to the structural design of nanocomposite. (1) the CH2N(+)(CH3)3Cl groups enhances sorption diffusion and preconcentration in sorbent phase theoretically based on Donnan membrane principle; (2) the embedded ZrP nanoparticles also devotes to the efficient adsorption capacities due to its size-dependent specific properties. Additionally, the exhausted ZrP-MPN could be regenerated readily by alkaline solution. Thus, ZrP-MPN was a promising material for fluoride retention in waters.
authors.affiliation: Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, PR China. zhangqr@ysu.edu.cn
authors.forename: Qingrui
authors.initials: Q
authors.lastname: Zhang
authors.forename: Qing
authors.initials: Q
authors.lastname: Du
authors.forename: Tifeng
authors.initials: T
authors.lastname: Jiao
authors.forename: Zhaoxiang
authors.initials: Z
authors.lastname: Zhang
authors.forename: Sufeng
authors.initials: S
authors.lastname: Wang
authors.forename: Qina
authors.initials: Q
authors.lastname: Sun
authors.forename: Faming
authors.initials: F
authors.lastname: Gao
mesh_terms: D000042:Absorption; D005459:Fluorides / Q000737:chemistry / Q000302:isolation & purification*; D053758:Nanoparticles / Q000737:chemistry*; D011137:Polystyrenes / Q000737:chemistry*; D016062:Porosity; D014462:Ultrafiltration / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000302:isolation & purification*; D015040:Zirconium / Q000737:chemistry*
chemical_list: D011137:Polystyrenes; D014874:Water Pollutants, Chemical; C027006:zirconium phosphate; D015040:Zirconium; D005459:Fluorides