title: High efficient and selective removal of Pb2+through formation of lead molybdate on α-MoO3porous nanosheets array.
abstract: 2D hand-like structured α-MoO3porous nanosheets were grown in-situ onto a capillary by a simple hydrothermal route, on which titanium dioxide seed layer was sol-dip-coated in advance. The α-MoO3porous nanosheets array exhibits an exceptional lead ion uptake capacity up to 1450.0mg·g-1, and can effectively reduce Pb2+concentration from 20mg·L-1to a low level of smaller than 3μg·L-1, well below the acceptable limits in drinking water standards (10μg·L-1) and can efficiently remove 99.9% lead ion within a few minutes at room temperature. Furthermore, α-MoO3porous nanosheets array also has high selectivity toward Pb2+better than Cu2+, Zn2+, Cr3+and Cd2+. The mechanism for adsorption was discussed according to the results of Zeta potential, IR, XPS and XRD analyses. The excellent removal performance of the array to Pb2+is resulted from the electrostatic adsorption interaction and the formation of new species lead molybdate.
authors.affiliation: Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China.
authors.forename: Yunying
authors.initials: Y
authors.lastname: Wu
authors.affiliation: Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China.
authors.forename: Xiaoli
authors.initials: X
authors.lastname: Cheng
authors.affiliation: Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China.
authors.forename: Xianfa
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China. Electronic address: xuyingming@hlju.edu.cn.
authors.forename: Yingming
authors.initials: Y
authors.lastname: Xu
authors.affiliation: Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China.
authors.forename: Shan
authors.initials: S
authors.lastname: Gao
authors.affiliation: Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China.
authors.forename: Hui
authors.initials: H
authors.lastname: Zhao
authors.affiliation: Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China. Electronic address: lhhuo68@yahoo.com.
authors.forename: Lihua
authors.initials: L
authors.lastname: Huo
keywords: PbMoO(4); Porous nanosheets array; Removal Pb(2+); α-MoO(3)