title: Adsorption of molybdate on molybdate-imprinted chitosan/triethanolamine gel beads.
abstract: Mo (VI)-imprinted chitosan (CTS)/triethanolamine (TEA) gel beads (Mo (VI)-ICTGBs) (ICTGBs=imprinted chitosan triethanolamine gel beads) were prepared by using ion-imprinted technology, in which TEA and molybdate solution were used in coagulation bath. The spectrum of FT-IR implies that bonding are formed between TEA and the primary hydroxyl of CTS, and ion gel reaction happen between CTS and molybdate; XRD patterns also prove the change among CTS, TEA and molybdate. SEM images and N2 adsorption show that the surface area increases obviously after eluting Mo (VI) ions. The adsorption isotherm of Mo (VI)-ICTGBs imply that the adsorption process is according with Freundlich model. Adsorption kinetics suggests that the pseudo-second order adsorption mechanism is predominant for this adsorbent system of Mo (VI)-ICTGBs. The Mo (VI)-ICTGBs show high adsorption capacity and good selectivity for Mo (VI) anions in the coexistence system at pH=6.0. The Mo (VI)-ICTGBs have a good application prospect, because it is with a simple and rapid technique and good durance.
authors.affiliation: College of Science, Xi'an University of Architecture and Technology, Xi'an, Shaanxi, 710055, China. Electronic address: zl98zl@hotmail.com.
authors.forename: Liang
authors.initials: L
authors.lastname: Zhang
authors.affiliation: College of Metallurgy Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi, 710055, China.
authors.forename: Juanqin
authors.initials: J
authors.lastname: Xue
authors.affiliation: Technical Center of Jin Dui Cheng Molybdenum Co., Ltd, Xi'an, Shaanxi, 710077, China.
authors.forename: Xingwen
authors.initials: X
authors.lastname: Zhou
authors.affiliation: College of Science, Xi'an University of Architecture and Technology, Xi'an, Shaanxi, 710055, China.
authors.forename: Xiang
authors.initials: X
authors.lastname: Fei
authors.affiliation: College of Science, Xi'an University of Architecture and Technology, Xi'an, Shaanxi, 710055, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Wang
authors.affiliation: College of Science, Xi'an University of Architecture and Technology, Xi'an, Shaanxi, 710055, China.
authors.forename: Yuanzhen
authors.initials: Y
authors.lastname: Zhou
authors.affiliation: College of Science, Xi'an University of Architecture and Technology, Xi'an, Shaanxi, 710055, China.
authors.forename: Lvling
authors.initials: L
authors.lastname: Zhong
authors.affiliation: College of Science, Xi'an University of Architecture and Technology, Xi'an, Shaanxi, 710055, China.
authors.forename: Xuanli
authors.initials: X
authors.lastname: Han
mesh_terms: D000327:Adsorption; D048271:Chitosan / Q000737:chemistry*; D004983:Ethanolamines / Q000737:chemistry*; D008982:Molybdenum / Q000737:chemistry*
chemical_list: D004983:Ethanolamines; C044659:molybdate; D008982:Molybdenum; D048271:Chitosan; C009546:triethanolamine
keywords: Adsorption; Chitosan; Ion-imprinted technology; Molybdate; Triethanolamine