title: Preparation of zirconium oxy ion-imprinted particle for the selective separation of trace zirconium ion from water.
abstract: Zr(IV) oxy ion-imprinted particle (Zr-IIP) was prepared using the metal ion imprinting technique in a sol-gel process on the surface of amino-silica. The dosages of zirconium ions as imprinted target, (3-aminopropyl) triethoxysilane (APTES) as a functional monomer and teraethyl orthosilicate (TEOS) as a cross-linker were optimized. The prepared Zr-IIP and Zr(IV) oxy ion non-imprinted particle (Zr-NIP) were characterized. pH effect, binding ability and the selectivity were investigated in detail. The results showed that the Zr-IIP had an excellent binding capacity and selectivity in the water. The equilibrium data fitted well to the pseudo-second-order kinetic and the Langmuir model for Zr(IV) binding onto Zr-IIP, respectively. The saturate binding capacity of Zr-IIP was found to be 196.08 μmol g(-1), which was 18 times higher than that of Zr-NIP. The sequence of binding efficiency of Zr-IIP for various ions was Zr(IV)>Cu(II)>Sb(III)>Eu(III). The coordination number has an important effect on the dimensional binding capacity. The equilibrium binding capacity of Zr-IIP for Zr(IV) decreased little under various concentrations of Pb(II) ions. The analysis of relative selectivity coefficient (Kr) indicated that the Zr-IIP had an appreciable binding specificity towards Zr(IV) although the competitive ions coexisted in the water. The Zr-IIP could serve as an efficient selective material for recovering or removing zirconium from the water environment.
authors.affiliation: Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR China.
authors.forename: Yueming
authors.initials: Y
authors.lastname: Ren
authors.affiliation: Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR China.
authors.forename: Pingxin
authors.initials: P
authors.lastname: Liu
authors.affiliation: Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR China.
authors.forename: Xiaoli
authors.initials: X
authors.lastname: Liu
authors.affiliation: Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR China.
authors.forename: Jing
authors.initials: J
authors.lastname: Feng
authors.affiliation: Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR China. Electronic address: fanzhj666@163.com.
authors.forename: Zhuangjun
authors.initials: Z
authors.lastname: Fan
authors.affiliation: The First Affiliated Hospital of Harbin Medical University, Harbin 150001, PR China. Electronic address: luantianzhu1997@163.com.
authors.forename: Tianzhu
authors.initials: T
authors.lastname: Luan
mesh_terms: D011437:Propylamines; D012821:Silanes / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry*; D018508:Water Purification / Q000379:methods*; D015040:Zirconium / Q000737:chemistry*
chemical_list: D011437:Propylamines; D012821:Silanes; D012822:Silicon Dioxide; D015040:Zirconium; C477625:amino-propyl-triethoxysilane
keywords: Metal ion imprinting; Selectivity; Sol–gel; Water environment; Zr(IV)