期刊
NANOSCALE ADVANCES
卷 1, 期 1, 页码 389-394出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8na00044a
关键词
-
资金
- National Key R&D Program of China [2016YFC0401107]
- State Key Laboratory of Urban Water Resource and Environment (Harbin Institute of Technology) [2016DX04]
- HIT Environment and Ecology Innovation Special Funds [HSCJ201605]
Nanofibrous membranes have a high specific surface area and large porosity, which are beneficial for being used as adsorbents to remove heavy metal ions from water. In this work, electrospun nanofibers were wrapped with a hydrogel layer with a tunable thickness, which endowed the membrane with excellent superhydrophilic performance. Because of good water-retention properties and abundant functional groups originating from the hydrogel layer, as a static adsorbent, the maximum adsorption capacity of Pb(II) was up to 146.21 mg g(-1) according to the Langmuir model. Meanwhile, the electrospun membrane also possessed water permeability as a flow-through membrane for dynamic adsorption, which was obviously different from traditional hydrogel adsorbents. As a result, the rejection ratio of Pb(u) can remain over 55% after running for 72 h under high pH conditions and at low initial ion concentrations. Apart from these, cycle operations confirmed the regeneration of the membrane, and competitive adsorption experiments illustrated the selective removal of Pb(II) in a mixed ion solution.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据